#!/usr/bin/env python3
"""
Hanau Articulator & Gnathic System - 65 Slide Presentation
Generated with python-pptx
"""

from pptx import Presentation
from pptx.util import Inches, Pt, Emu
from pptx.dml.color import RGBColor
from pptx.enum.text import PP_ALIGN, MSO_ANCHOR
from pptx.util import Inches, Pt
import textwrap

# ─── Color Palette ─────────────────────────────────────────────────────────────
NAVY       = RGBColor(0x0A, 0x29, 0x5C)   # dark navy title bars
TEAL       = RGBColor(0x00, 0x7E, 0x8A)   # accent teal
GOLD       = RGBColor(0xE8, 0xA0, 0x00)   # gold accent
WHITE      = RGBColor(0xFF, 0xFF, 0xFF)
LIGHT_GRAY = RGBColor(0xF2, 0xF4, 0xF7)
DARK_GRAY  = RGBColor(0x2D, 0x2D, 0x2D)
MID_GRAY   = RGBColor(0x55, 0x65, 0x7A)
LIGHT_TEAL = RGBColor(0xE0, 0xF4, 0xF6)
LIGHT_GOLD = RGBColor(0xFD, 0xF3, 0xDC)

prs = Presentation()
prs.slide_width  = Inches(13.333)
prs.slide_height = Inches(7.5)
blank = prs.slide_layouts[6]

# ─── Helper Functions ──────────────────────────────────────────────────────────

def add_rect(slide, l, t, w, h, fill_color, line_color=None, line_width=0):
    shape = slide.shapes.add_shape(
        1,  # MSO_SHAPE_TYPE.RECTANGLE
        Inches(l), Inches(t), Inches(w), Inches(h)
    )
    shape.fill.solid()
    shape.fill.fore_color.rgb = fill_color
    if line_color:
        shape.line.color.rgb = line_color
        shape.line.width = Pt(line_width)
    else:
        shape.line.fill.background()
    return shape

def add_text(slide, text, l, t, w, h,
             font_name="Calibri", font_size=14, bold=False, italic=False,
             color=DARK_GRAY, align=PP_ALIGN.LEFT,
             v_anchor=MSO_ANCHOR.TOP, word_wrap=True,
             margin_l=0.05, margin_t=0.02, margin_r=0.05, margin_b=0.02):
    tb = slide.shapes.add_textbox(Inches(l), Inches(t), Inches(w), Inches(h))
    tf = tb.text_frame
    tf.word_wrap = word_wrap
    tf.vertical_anchor = v_anchor
    tf.margin_left   = Inches(margin_l)
    tf.margin_top    = Inches(margin_t)
    tf.margin_right  = Inches(margin_r)
    tf.margin_bottom = Inches(margin_b)
    p = tf.paragraphs[0]
    p.alignment = align
    run = p.add_run()
    run.text = text
    run.font.name  = font_name
    run.font.size  = Pt(font_size)
    run.font.bold  = bold
    run.font.italic= italic
    run.font.color.rgb = color
    return tb

def add_multiline_text(slide, lines, l, t, w, h,
                        font_name="Calibri", font_size=13,
                        bold_first=False, color=DARK_GRAY,
                        line_spacing=1.15, align=PP_ALIGN.LEFT,
                        v_anchor=MSO_ANCHOR.TOP,
                        margin_l=0.1, margin_t=0.05):
    tb = slide.shapes.add_textbox(Inches(l), Inches(t), Inches(w), Inches(h))
    tf = tb.text_frame
    tf.word_wrap = True
    tf.vertical_anchor = v_anchor
    tf.margin_left   = Inches(margin_l)
    tf.margin_top    = Inches(margin_t)
    tf.margin_right  = Inches(0.05)
    tf.margin_bottom = Inches(0.05)
    first = True
    for i, line in enumerate(lines):
        if i == 0:
            p = tf.paragraphs[0]
        else:
            p = tf.add_paragraph()
        p.alignment = align
        from pptx.util import Pt as Pt2
        from pptx.oxml.ns import qn
        from lxml import etree
        pPr = p._p.get_or_add_pPr()
        # line spacing
        lnSpc = etree.SubElement(pPr, qn('a:lnSpc'))
        spcPct = etree.SubElement(lnSpc, qn('a:spcPct'))
        spcPct.set('val', str(int(line_spacing * 100000)))
        run = p.add_run()
        run.text = line
        run.font.name = font_name
        run.font.size = Pt(font_size)
        run.font.color.rgb = color
        if bold_first and first:
            run.font.bold = True
        first = False
    return tb

def title_slide_layout(slide, title, subtitle, presenter=""):
    """Full Navy background title slide."""
    add_rect(slide, 0, 0, 13.333, 7.5, NAVY)
    # gold accent bar
    add_rect(slide, 0, 5.8, 13.333, 0.15, GOLD)
    # decorative teal sidebar
    add_rect(slide, 0, 0, 0.35, 7.5, TEAL)
    # title
    add_text(slide, title, 0.6, 1.5, 12.0, 2.5,
             font_name="Calibri", font_size=40, bold=True,
             color=WHITE, align=PP_ALIGN.CENTER, v_anchor=MSO_ANCHOR.MIDDLE)
    # subtitle
    add_text(slide, subtitle, 0.6, 3.8, 12.0, 1.0,
             font_name="Calibri", font_size=22, bold=False,
             color=GOLD, align=PP_ALIGN.CENTER)
    if presenter:
        add_text(slide, presenter, 0.6, 6.0, 12.0, 0.5,
                 font_name="Calibri", font_size=14, italic=True,
                 color=WHITE, align=PP_ALIGN.CENTER)

def section_divider(slide, section_num, section_title, description=""):
    """Teal section divider slide."""
    add_rect(slide, 0, 0, 13.333, 7.5, TEAL)
    add_rect(slide, 0, 0, 0.5, 7.5, NAVY)
    add_rect(slide, 0, 6.8, 13.333, 0.7, NAVY)
    add_text(slide, f"SECTION  {section_num}", 0.8, 1.8, 11.5, 0.8,
             font_size=18, bold=True, color=GOLD, align=PP_ALIGN.LEFT)
    add_text(slide, section_title, 0.8, 2.5, 11.5, 1.8,
             font_size=38, bold=True, color=WHITE, align=PP_ALIGN.LEFT)
    if description:
        add_text(slide, description, 0.8, 4.5, 11.0, 0.9,
                 font_size=16, italic=True, color=LIGHT_TEAL, align=PP_ALIGN.LEFT)

def content_slide(slide, title, bullets, two_col=False, col1_bullets=None, col2_bullets=None, note=""):
    """Standard content slide with navy title bar."""
    # Title bar
    add_rect(slide, 0, 0, 13.333, 1.0, NAVY)
    add_rect(slide, 0, 1.0, 13.333, 0.04, GOLD)
    add_rect(slide, 0, 0, 0.12, 1.0, TEAL)
    # Slide background
    add_rect(slide, 0, 1.04, 13.333, 6.46, LIGHT_GRAY)
    # Title text
    add_text(slide, title, 0.25, 0.08, 12.8, 0.84,
             font_size=24, bold=True, color=WHITE,
             align=PP_ALIGN.LEFT, v_anchor=MSO_ANCHOR.MIDDLE)
    if not two_col:
        # Single column bullets
        y = 1.25
        for b in bullets:
            is_sub = b.startswith("  ")
            txt = b.strip()
            bullet_char = "   •" if is_sub else "►"
            fs = 14 if is_sub else 15
            col = MID_GRAY if is_sub else DARK_GRAY
            bw = 0.35 if not is_sub else 0.0
            # bullet indicator
            if not is_sub:
                add_rect(slide, 0.28, y + 0.05, 0.06, 0.28, TEAL)
            add_text(slide, txt, 0.55, y, 12.3, 0.45,
                     font_size=fs, color=col, align=PP_ALIGN.LEFT, word_wrap=True)
            y += 0.47 if not is_sub else 0.40
    else:
        # Two column layout
        add_text(slide, "Key Points", 0.4, 1.15, 5.8, 0.35,
                 font_size=13, bold=True, color=TEAL)
        add_text(slide, "Details", 6.9, 1.15, 5.8, 0.35,
                 font_size=13, bold=True, color=TEAL)
        add_rect(slide, 0.3, 1.45, 6.1, 5.7, WHITE)
        add_rect(slide, 6.8, 1.45, 6.1, 5.7, WHITE)
        y1 = 1.55
        for b in (col1_bullets or []):
            add_rect(slide, 0.38, y1 + 0.08, 0.06, 0.22, TEAL)
            add_text(slide, b.strip(), 0.56, y1, 5.7, 0.42,
                     font_size=13, color=DARK_GRAY, word_wrap=True)
            y1 += 0.48
        y2 = 1.55
        for b in (col2_bullets or []):
            add_rect(slide, 6.88, y2 + 0.08, 0.06, 0.22, GOLD)
            add_text(slide, b.strip(), 7.06, y2, 5.7, 0.42,
                     font_size=13, color=DARK_GRAY, word_wrap=True)
            y2 += 0.48
    if note:
        add_rect(slide, 0.3, 6.85, 12.7, 0.5, LIGHT_GOLD)
        add_text(slide, f"Ref: {note}", 0.45, 6.88, 12.4, 0.42,
                 font_size=11, italic=True, color=DARK_GRAY)

def table_slide(slide, title, headers, rows, note=""):
    """Slide with a table."""
    add_rect(slide, 0, 0, 13.333, 1.0, NAVY)
    add_rect(slide, 0, 1.0, 13.333, 0.04, GOLD)
    add_rect(slide, 0, 0, 0.12, 1.0, TEAL)
    add_rect(slide, 0, 1.04, 13.333, 6.46, LIGHT_GRAY)
    add_text(slide, title, 0.25, 0.08, 12.8, 0.84,
             font_size=24, bold=True, color=WHITE,
             align=PP_ALIGN.LEFT, v_anchor=MSO_ANCHOR.MIDDLE)
    # Draw table manually
    cols = len(headers)
    col_w = 12.4 / cols
    row_h = 0.48
    top = 1.3
    left_start = 0.45
    # Header
    for ci, hdr in enumerate(headers):
        add_rect(slide, left_start + ci * col_w, top, col_w - 0.02, row_h, NAVY)
        add_text(slide, hdr, left_start + ci * col_w + 0.05, top + 0.05,
                 col_w - 0.1, row_h - 0.08,
                 font_size=13, bold=True, color=WHITE, align=PP_ALIGN.CENTER,
                 v_anchor=MSO_ANCHOR.MIDDLE)
    # Rows
    for ri, row in enumerate(rows):
        bg = WHITE if ri % 2 == 0 else LIGHT_TEAL
        row_top = top + (ri + 1) * row_h
        for ci, cell in enumerate(row):
            add_rect(slide, left_start + ci * col_w, row_top, col_w - 0.02, row_h - 0.02, bg,
                     TEAL, 0.5)
            add_text(slide, cell, left_start + ci * col_w + 0.06, row_top + 0.04,
                     col_w - 0.12, row_h - 0.08,
                     font_size=12, color=DARK_GRAY, align=PP_ALIGN.LEFT,
                     v_anchor=MSO_ANCHOR.MIDDLE, word_wrap=True)
    if note:
        add_rect(slide, 0.3, 6.88, 12.7, 0.48, LIGHT_GOLD)
        add_text(slide, f"Ref: {note}", 0.45, 6.9, 12.4, 0.42,
                 font_size=11, italic=True, color=DARK_GRAY)

def formula_slide(slide, title, formula, explanation_lines, note=""):
    """Slide highlighting a formula."""
    add_rect(slide, 0, 0, 13.333, 1.0, NAVY)
    add_rect(slide, 0, 1.0, 13.333, 0.04, GOLD)
    add_rect(slide, 0, 0, 0.12, 1.0, TEAL)
    add_rect(slide, 0, 1.04, 13.333, 6.46, LIGHT_GRAY)
    add_text(slide, title, 0.25, 0.08, 12.8, 0.84,
             font_size=24, bold=True, color=WHITE,
             align=PP_ALIGN.LEFT, v_anchor=MSO_ANCHOR.MIDDLE)
    # Formula box
    add_rect(slide, 2.5, 1.4, 8.3, 1.5, NAVY)
    add_rect(slide, 2.5, 1.4, 0.12, 1.5, GOLD)
    add_text(slide, formula, 2.8, 1.4, 7.8, 1.5,
             font_name="Cambria Math", font_size=32, bold=True,
             color=GOLD, align=PP_ALIGN.CENTER, v_anchor=MSO_ANCHOR.MIDDLE)
    y = 3.2
    for line in explanation_lines:
        is_sub = line.startswith("  ")
        add_rect(slide, 0.5, y + 0.08, 0.06, 0.25, TEAL)
        add_text(slide, line.strip(), 0.72, y, 12.3, 0.45,
                 font_size=14, color=DARK_GRAY, word_wrap=True)
        y += 0.48
    if note:
        add_rect(slide, 0.3, 6.85, 12.7, 0.5, LIGHT_GOLD)
        add_text(slide, f"Ref: {note}", 0.45, 6.88, 12.4, 0.42,
                 font_size=11, italic=True, color=DARK_GRAY)

def reference_slide(slide, refs):
    """References slide."""
    add_rect(slide, 0, 0, 13.333, 7.5, LIGHT_GRAY)
    add_rect(slide, 0, 0, 13.333, 1.0, NAVY)
    add_rect(slide, 0, 1.0, 13.333, 0.04, GOLD)
    add_rect(slide, 0, 0, 0.12, 1.0, TEAL)
    add_text(slide, "REFERENCES", 0.25, 0.08, 12.8, 0.84,
             font_size=24, bold=True, color=WHITE,
             align=PP_ALIGN.LEFT, v_anchor=MSO_ANCHOR.MIDDLE)
    y = 1.25
    for i, ref in enumerate(refs, 1):
        add_text(slide, f"{i}. {ref}", 0.4, y, 12.5, 0.55,
                 font_size=11, color=DARK_GRAY, word_wrap=True)
        y += 0.58

# ═══════════════════════════════════════════════════════════════════════════════
# SLIDES
# ═══════════════════════════════════════════════════════════════════════════════

# ── SLIDE 1 : Title ───────────────────────────────────────────────────────────
s = prs.slides.add_slide(blank)
title_slide_layout(s,
    "Hanau Articulator &\nGnathic System Mechanics",
    "A Comprehensive Prosthodontic Review",
    "Department of Prosthodontics  |  2026")

# ── SLIDE 2 : Table of Contents ───────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "TABLE OF CONTENTS", [
    "1. Historical Background & Evolution of Articulators",
    "2. Fundamentals of the Gnathic System",
    "3. Classification of Articulators",
    "4. Anatomy of the Hanau Articulator",
    "5. ARCON vs Non-ARCON Design Principle",
    "6. Components in Detail",
    "7. Hanau Facebow – Springbow",
    "8. Hanau's Quint – Laws of Articulation",
    "9. Mechanics of Condylar Guidance",
    "10. Bennett Movement & Lateral Condylar Guidance",
    "11. Hanau Formula – L = H/8 + 12",
    "12. Programming the Articulator",
    "13. Types: Wide-Vue, Wide-Vue II, H2, H2-O",
    "14. Clinical Applications & Limitations",
    "15. Digital Integration & Virtual Articulators",
    "16. References",
])

# ── SLIDE 3 : Section Divider – History ───────────────────────────────────────
s = prs.slides.add_slide(blank)
section_divider(s, "01", "Historical Background\n& Evolution of Articulators",
                "From simple occludators to precision semi-adjustable instruments")

# ── SLIDE 4 : Early History ───────────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "EARLY HISTORY OF ARTICULATORS", [
    "First known articulator – Phillip Pfaff (1756): Simple hinge device",
    "William Balkwill (1866): Described mandibular movements & distance from condyles to incisal point (Balkwill angle ~26°)",
    "George Snow (1880): Introduced face-bow concept to transfer casts",
    "Gysi (1910): Developed adaptable articulator simulating condylar paths",
    "Walker (1896): Patented first anatomic articulator",
    "Monson (1918): Proposed spherical theory of occlusion (4-inch sphere)",
    "McCollum & Stuart (1955): Advanced gnathologic articulators – Stuart articulator",
], note="Sharry JJ. Complete Denture Prosthodontics. McGraw-Hill, 1974")

# ── SLIDE 5 : Rudolph Hanau ───────────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "RUDOLPH L. HANAU – PIONEER OF ARTICULATION SCIENCE", [
    "Rudolph L. Hanau (1881–1930): German-born dental engineer & manufacturer",
    "1926: Published landmark paper 'Articulation Defined, Explained and Formulated' – J Am Dent Assoc",
    "Introduced the Hanau Quint (5 factors of balanced articulation)",
    "Formulated 44 laws of balanced articulation condensed from 9 original factors",
    "Developed the Hanau Model H articulator – first widely adopted semi-adjustable device",
    "Company later became Teledyne Water Pik, subsequently Whip Mix Corporation",
    "His formula L = H/8 + 12 remains one of the most cited equations in prosthodontics",
], note="Hanau RL. Articulation defined, explained and formulated. J Am Dent Assoc. 1926;13:1694-1709")

# ── SLIDE 6 : Section Divider – Gnathic System ────────────────────────────────
s = prs.slides.add_slide(blank)
section_divider(s, "02", "Fundamentals of the\nGnathic System",
                "Anatomy, joints, and mandibular movement pathways")

# ── SLIDE 7 : Gnathic System – Overview ──────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "THE GNATHIC SYSTEM – DEFINITION & COMPONENTS", [
    "Gnathic system (from Greek 'gnathos' = jaw): The functional unit governing jaw mechanics",
    "Comprises: Temporomandibular joints (TMJ), teeth, periodontium, masticatory muscles, neuromuscular control",
    "Posterior determinants: TMJ condyles & articular eminence – NOT modifiable clinically",
    "Anterior determinants: Incisal guidance / anterior teeth – modifiable during prosthetic treatment",
    "Articulators simulate this system mechanically to fabricate accurate prostheses",
    "Goal: Reproduce centric relation, vertical dimension, and eccentric mandibular movements",
], note="Okeson JP. Management of Temporomandibular Disorders and Occlusion. 8th ed. Elsevier, 2019")

# ── SLIDE 8 : TMJ Anatomy ────────────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "TEMPOROMANDIBULAR JOINT (TMJ) – ANATOMY RELEVANT TO ARTICULATION", [
    "Condylar head: Ellipsoidal, ~20mm mediolateral x 10mm anteroposterior",
    "Articular eminence: Convex bony structure – condyle translates along inferior slope",
    "Articular disc: Biconcave fibrocartilaginous structure; superior surface = glenoid fossa contour",
    "Bilaminar zone: Posterior attachment – elastin fibers allow disc displacement",
    "Superior joint space: Gliding (translation) movements",
    "Inferior joint space: Rotation (hinge) movements",
    "Intercondylar distance: ~110 mm – affects articulator design (hinge axis)",
    "Bennett movement (lateral shift): Whole mandible shifts bodily toward working side",
], note="Gray's Anatomy, 41st edition; Okeson JP, 2019")

# ── SLIDE 9 : Mandibular Movements ───────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "MANDIBULAR MOVEMENTS – TYPES & MECHANICS", [
    "ROTATION: Pure hinge movement around transverse hinge axis – occurs in inferior joint space",
    "TRANSLATION: Forward/lateral gliding of condyle-disc assembly along eminence – superior joint space",
    "PROTRUSION: Bilateral forward translation of both condyles along eminence slopes",
    "RETRUSION: Condyle moves posteriorly into centric relation position",
    "LATERAL (Working side): Condyle rotates with slight lateral shift (Bennett movement)",
    "LATERAL (Balancing/Non-working): Condyle moves forward, downward & inward – longer path",
    "BENNET MOVEMENT: Bodily lateral shift of mandible; immediate vs progressive side shift",
    "POSSELT'S ENVELOPE: Three-dimensional boundary of all mandibular movements",
], note="Okeson JP. 2019; Posselt U. Studies in the mobility of the human mandible. 1952")

# ── SLIDE 10 : Condylar Path & Eminence ──────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "CONDYLAR PATH & ARTICULAR EMINENCE INCLINATION", [
    "Condylar path: The pathway traced by condyle during various mandibular movements",
    "Sagittal condylar path inclination (protrusive): ~40° to Frankfort horizontal plane (range 20–60°)",
    "Fischer angle: Difference between condylar guidance on articulator vs actual anatomic path",
    "Articular eminence steepness correlates directly with condylar guidance angle",
    "Steep eminence → steep condylar path → requires taller posterior cusps for balanced occlusion",
    "Flat eminence → shallow condylar path → flatter cusps / non-anatomic teeth preferred",
    "Articular eminence inclination recorded using protrusive interocclusal records",
    "Average condylar guidance: 30–40° (mean 33°); Bennett angle: 15° (mean)",
], note="dos Santos J Jr et al. J Prosthet Dent. 2003;90(1):52-8. PMID: 12589287")

# ── SLIDE 11 : Section Divider – Classification ──────────────────────────────
s = prs.slides.add_slide(blank)
section_divider(s, "03", "Classification of Articulators",
                "From simple occludators to fully adjustable gnathoscopes")

# ── SLIDE 12 : APA Classification ────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "CLASSIFICATION OF ARTICULATORS (American Prosthodontic Association)", [
    "CLASS I – Simple Occludators: Only vertical opening/closing; no lateral movements; no condylar guidance",
    "  Example: Pindex, fixed pin occludators",
    "CLASS II – Mean-Value Articulators: Simulates average movements with fixed condylar angles (30°)",
    "  Example: Galetti, Simplex, Gysi Simplex articulator",
    "CLASS III – Semi-Adjustable Articulators: Accepts face-bow; adjustable condylar guidance using interocclusal records",
    "  Example: HANAU WIDE-VUE, Whip-Mix, Denar Mark II, Dentatus ARH",
    "CLASS IV – Fully Adjustable (Gnathic) Articulators: Accepts pantographic/axiographic records; reproduces all movements",
    "  Example: Stuart, Denar D5A, TMJ articulator, Condylator, Gnathoscope",
], note="American Prosthodontic Society; Sharry JJ, 1974; Weinberg LA. Articulators, J Prosthet Dent 1963")

# ── SLIDE 13 : ARCON vs Non-ARCON ────────────────────────────────────────────
s = prs.slides.add_slide(blank)
table_slide(s, "ARCON vs NON-ARCON ARTICULATORS",
    ["Feature", "ARCON Articulator", "Non-ARCON Articulator"],
    [
        ["Design basis", "Condyle on lower member (like human anatomy)", "Condyle on upper member"],
        ["Example", "Hanau Wide-Vue, Whip-Mix 8500", "Hanau H2, Dentatus, Ney"],
        ["Condylar guidance", "Fixed to upper member (anatomically correct)", "Fixed to lower member"],
        ["At full closure", "Condyle-fossa relationship does not change", "Relationship changes with jaw opening angle"],
        ["Accuracy", "More anatomically accurate", "Less accurate at opening angles"],
        ["Clinical use", "Preferred for complete dentures", "Used in crown/bridge work"],
        ["Sagittal condylar guidance", "Matches cephalometric values closely", "Discrepancy from true values"],
    ],
    note="Goyal MK, Goyal S. Indian J Dent Res. 2011;22(6):818-23. PMID: 22484898")

# ── SLIDE 14 : Section Divider – Hanau Anatomy ───────────────────────────────
s = prs.slides.add_slide(blank)
section_divider(s, "04", "Anatomy of the\nHanau Articulator",
                "Structural components and their functional roles")

# ── SLIDE 15 : Overview of Components ───────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "HANAU WIDE-VUE – MAJOR COMPONENTS OVERVIEW", [
    "UPPER MEMBER: T-shaped frame representing the maxilla; bears condylar guidance assemblies",
    "LOWER MEMBER: L-shaped frame representing the mandible; bears mounting plate for mandibular cast",
    "CONDYLAR GUIDANCE (×2): Adjustable tracks simulating articular eminence slope",
    "CONDYLAR ELEMENT (×2): Spherical/cylindrical components moving within condylar tracks",
    "INCISAL PIN (Vertical Rod): Maintains occlusal vertical dimension (OVD); double-ended pin",
    "INCISAL GUIDE TABLE: Customizable flat/sloped table; simulates anterior guidance",
    "MOUNTING PLATES: Removable magnetic or plaster-retentive plates for cast attachment",
    "CENTRIC LOCK: Restricts articulator to hinge opening/closing only during cast mounting",
    "ORBITAL INDICATOR: References Frankfurt horizontal plane for maxillary cast orientation",
], note="Hanau Wide-Vue Instruction Manual, Whip Mix Corporation 2020")

# ── SLIDE 16 : Upper Member Detail ──────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "UPPER MEMBER – ANATOMY & FUNCTION", [
    "T-shaped metal frame (upper): horizontal arm + vertical arm",
    "Horizontal arm: bears the condylar guidance housings bilaterally",
    "Condylar guidance attached to upper member in ARCON design",
    "Orbital indicator: located near the center – used with orbital pointer of facebow",
    "Mounting platform: accepts mounting plaster or magnetic mounting plate for maxillary cast",
    "Centric lock (upper): restricts movement to pure hinge axis rotation",
    "Upper member can be removed for waxing in Wide-Vue II (open condylar track design)",
    "Wide-Vue I: CLOSED condylar track – upper member CANNOT be removed; retainer prevents separation",
], note="Whip Mix Corporation. Hanau Wide-Vue series instructions, 2020")

# ── SLIDE 17 : Lower Member Detail ─────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "LOWER MEMBER – ANATOMY & FUNCTION", [
    "L-shaped frame: horizontal arm + vertical arm",
    "Horizontal arm: triangular; apex carries the incisal guide table",
    "Incisal guide table at anterior apex – represents anterior reference point",
    "Mounting dowels: located at center of undersurface for cast indexing",
    "Lower member holds condylar elements in ARCON design (anatomically analogous to mandibular condyle)",
    "Bennett calibration scale: graduated markings for setting Bennett angle",
    "Centric lock on lower member: prevents lateral excursions during mounting",
    "Spring latch in Wide-Vue II: allows upper/lower separation for easier waxing access",
], note="Whip Mix Corporation. Hanau Wide-Vue series instructions, 2020")

# ── SLIDE 18 : Condylar Guidance ─────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "CONDYLAR GUIDANCE (CONDYLAR TRACK) – DETAILED ANATOMY", [
    "Location: Attached to UPPER member in ARCON Hanau design",
    "Protrusive inclination axis: adjustable from -20° (below horizontal) to +60° (above horizontal)",
    "  -20° to 0°: rare; seen in resorbed/flat eminences",
    "  0° to +60°: typical clinical range; higher = steeper eminence",
    "Simulates superior wall of articular fossa (articular eminence slope)",
    "Progressive Bennett angle axis: adjustable from 0° to 30° on vertical axis",
    "  Simulates medial wall of articular fossa",
    "Closed condylar track (Wide-Vue I): housing is enclosed – element cannot disengage",
    "P-R screw: allows protrusive-retrusive programming; 6 mm protrusion range, 3 mm retrusion",
    "Centric stop (fixed): prevents over-closure past centric relation",
], note="Whip Mix Corporation. Hanau Wide-Vue series instructions, 2020; Weinberg, 1963")

# ── SLIDE 19 : Condylar Element ──────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "CONDYLAR ELEMENT – ANATOMY & FUNCTION", [
    "Location: Attached to LOWER member in ARCON Hanau (mirrors anatomy – condyle on mandible)",
    "Shape: Cylindrical/spherical metal component; fits within condylar track housing",
    "During protrusion: element moves forward within condylar track (simulating condyle on eminence)",
    "During lateral movement: element on working side rotates; balancing side element translates",
    "Radial shift adjustment: Wide-Vue II has 3 mm radius radial shift before engaging Bennett angle",
    "Immediate side shift: initial lateral movement before progressive Bennett shift begins",
    "Element-to-shoulder ('brass to brass') contact used to verify lateral interocclusal record seating",
    "Bennett angle calibration scale: graduated on vertical axis of condylar guidance housing",
], note="Whip Mix Corporation. Hanau Wide-Vue II instructions, 2020")

# ── SLIDE 20 : Incisal Pin & Guide Table ────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "INCISAL PIN & INCISAL GUIDE TABLE", [
    "INCISAL PIN (Vertical Rod): Double-sided pin – one end chisel/flat, other tapers to point",
    "Flat end used routinely; contacts incisal guide table during articulation",
    "Represents anterior reference point; midline of incisal edges should contact pin tip",
    "Sets and maintains OCCLUSAL VERTICAL DIMENSION (OVD) during mounting",
    "Mid-line calibration aligned to top edge of upper member during preparation",
    "INCISAL GUIDE TABLE: Customizable flat or angled table at apex of lower member",
    "Standard setting: 0° (flat) for complete denture fabrication",
    "Slope adjustable anteroposteriorly and locked with a locknut",
    "Lateral wings on table: guide lateral excursions of incisal pin",
    "Custom incisal table: fabricated with autopolymerizing resin for fixed prostheses",
], note="Whip Mix Corporation, 2020; Heartwell CM. Syllabus of Complete Dentures")

# ── SLIDE 21 : Facebow Section Divider ──────────────────────────────────────
s = prs.slides.add_slide(blank)
section_divider(s, "05", "Hanau Springbow\n& Facebow Transfer",
                "Recording the transverse hinge axis and orienting maxillary casts")

# ── SLIDE 22 : Facebow – Purpose ────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "FACEBOW – PURPOSE & TYPES", [
    "FACEBOW: A caliper-like device that records the spatial relationship of maxillary arch to transverse hinge axis",
    "Purpose: Transfer this relationship to the articulator so the arc of closure is geometrically correct",
    "Without facebow: maxillary cast mounted arbitrarily → inaccurate arc of closure → occlusal errors",
    "Types of facebow reference points:",
    "  Kinematic facebow: Locates actual hinge axis (most accurate, technically demanding)",
    "  Arbitrary facebow (Springbow): Uses average anatomical landmarks for hinge axis estimation",
    "HANAU SPRINGBOW: Earbow/arbitrary facebow; ear rods locate axis in external auditory meatus",
    "Earbow vs Nasion relator: Earbow references temporal bone; nasion relator references mid-face",
    "Springbow spring tension: self-centering design – reduces operator error",
], note="Gold BR, Setchell DJ. J Oral Rehabil. 1983;10(6):415-23. PMID: 6580406")

# ── SLIDE 23 : Springbow Components ─────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "HANAU SPRINGBOW – COMPONENTS & PROCEDURE", [
    "Components: U-shaped spring frame, ear rods (olivary ends), bitefork, transfer rod, nasion relator",
    "Bitefork: carries anterior wax index (registration) of maxillary teeth / occlusal rim",
    "Orbital pointer/indicator: identifies infraorbital notch (Frankfurt plane reference)",
    "Step 1: Prepare V-shaped grooves in wax rim, insert bitefork intraorally",
    "Step 2: Insert ear rods into external auditory meatus bilaterally",
    "Step 3: Record nasion/orbital reference with indicator",
    "Step 4: Tighten all screws and remove assembly from patient",
    "Step 5: Attach bitefork to mounting jig platform on articulator lower member",
    "Step 6: Position upper member using ear rod reference points on articulator uprights",
    "Step 7: Mount maxillary cast with mounting plaster against bitefork",
], note="Nazir N et al. Indian J Dent Res. 2012;23(4):437-41. PMID: 23257473")

# ── SLIDE 24 : Facebow Accuracy Studies ─────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "FACEBOW TRANSFER – CLINICAL ACCURACY EVIDENCE", [
    "Gold & Setchell (1983): Reproducibility of face-bow transfers – standard deviations acceptable for clinical use",
    "Maveli TC et al. (2015): Compared 5 facebow systems; significant differences in occlusal plane orientation",
    "  Hanau Springbow: acceptable accuracy; earbow placement most reproducible",
    "Nazir N et al. (2012): Hanau springbow vs Denar – Hanau showed similar maxillary cant transfer accuracy",
    "Shrivastava SP et al. (2025): In vivo comparison of 3 semi-adjustable articulator-facebow systems; differences in occlusal plane orientation were clinically significant",
    "Revilla-Leon M et al. (2024): Digital facebow methods – comparable to conventional in maxillary cast transfer",
    "Clinical implication: Even arbitrary facebow transfer significantly improves prosthodontic outcomes over non-facebow mounting",
], note="Maveli TC et al. J Prosthet Dent. 2015;114(4):574-9. PMID: 26139043; Shrivastava SP et al. 2025 PMID: 41040028")

# ── SLIDE 25 : Section Divider – Hanau's Quint ──────────────────────────────
s = prs.slides.add_slide(blank)
section_divider(s, "06", "Hanau's Quint –\nLaws of Articulation",
                "Five interdependent factors governing balanced occlusion")

# ── SLIDE 26 : Hanau's 9 Original Factors ───────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "HANAU'S 9 ORIGINAL FACTORS OF BALANCED ARTICULATION (1926)", [
    "Hanau (1926) initially described NINE factors that govern articulation:",
    "  1. Horizontal condylar inclination",
    "  2. Sagittal condylar path",
    "  3. Plane of orientation (occlusal plane)",
    "  4. Compensating curve (Monson's curve / curve of Spee)",
    "  5. Buccolingual inclination of tooth axis",
    "  6. Protrusive incisal guidance",
    "  7. Sagittal incisal guidance",
    "  8. Tooth alignment",
    "  9. Relative cusp height",
    "He then condensed these to FIVE (the Quint), showing mutual interdependence",
], note="Hanau RL. J Am Dent Assoc. 1926;13:1694-1709; PMC3254368")

# ── SLIDE 27 : Hanau's Quint ─────────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "HANAU'S QUINT – THE FIVE FACTORS", [
    "FACTOR 1 – CONDYLAR GUIDANCE (C): Angle condylar path makes with horizontal plane; fixed in patient",
    "  Set using protrusive interocclusal record; range 0–60°; avg ~33°",
    "FACTOR 2 – INCISAL GUIDANCE (I): Angle anterior teeth make during protrusion; clinician-adjustable",
    "  Minimize in complete dentures to reduce horizontal forces",
    "FACTOR 3 – COMPENSATING CURVE (CC): Anteroposterior + mediolateral curvature of occlusal plane",
    "  Combines curve of Spee + curve of Wilson; only defined for complete dentures",
    "FACTOR 4 – PLANE OF ORIENTATION (P): Relation of occlusal plane to ala-tragus line",
    "  Determined by esthetics, function, neutral zone; cannot be substantially altered",
    "FACTOR 5 – CUSP HEIGHT / INCLINATION (CH): Relative height and angulation of posterior tooth cusps",
    "  Directly adjustable by tooth selection; compensates for other 4 factors",
], note="Nishyama R et al. J Adv Prosthodont. 2026;18(1):46. PMID: 41783841")

# ── SLIDE 28 : Quint Interrelationships ─────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "HANAU'S QUINT – FACTOR INTERRELATIONSHIPS", [
    "All five factors are INTERDEPENDENT – changing one requires compensatory adjustment in others",
    "INCREASING condylar guidance → requires: ↑ compensating curve OR ↓ cusp height OR ↑ occlusal plane",
    "INCREASING incisal guidance → requires: ↑ compensating curve OR ↑ cusp height",
    "FLATTER occlusal plane → requires: ↑ compensating curve OR ↑ cusp height",
    "Nishyama et al. 2026: Digital + analog validation – consistent interrelationships confirmed",
    "  Both analog and digital methods demonstrated predictable compensatory roles of all factors",
    "Cusp height plays key compensatory role: adjustable without anatomical constraint",
    "Clinical takeaway: Complete denture occlusion is a system – isolated adjustment causes failure",
], note="Nishyama R et al. J Adv Prosthodont. 2026;18(1):46. PMID: 41783841; PMC3254368")

# ── SLIDE 29 : Section Divider – Condylar Guidance ──────────────────────────
s = prs.slides.add_slide(blank)
section_divider(s, "07", "Mechanics of\nCondylar Guidance",
                "Protrusive inclination, Bennett movement, and lateral guidance")

# ── SLIDE 30 : Condylar Guidance Mechanics ───────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "CONDYLAR GUIDANCE – SAGITTAL (PROTRUSIVE) MECHANICS", [
    "Definition: Influence of mandibular condyle & articular fossa on mandibular movements",
    "Sagittal condylar guidance = angle condylar path forms with horizontal reference plane",
    "Measured clinically: protrusive interocclusal record at ≥6 mm protrusion",
    "Record material: zinc oxide-eugenol paste, polysiloxane bite registration material",
    "Articulator programming: loosen thumbnuts, seat protrusive record, adjust condylar track until 'brass-to-brass' contact, tighten thumbnuts",
    "Protrusive inclination range on Hanau Wide-Vue: -20° to +60°",
    "Default setting for complete dentures (before recording): 30°",
    "Effect on occlusion: steeper guidance → greater disocclusion in protrusion → balanced occlusion harder to achieve with flat compensating curve",
], note="dos Santos J Jr et al. J Prosthet Dent. 2003;90(1):52-8. PMID: 12589287")

# ── SLIDE 31 : Condylar Guidance Recording ───────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "RECORDING CONDYLAR GUIDANCE – METHODS COMPARED", [
    "Method 1 – Protrusive Interocclusal Record (Wax or Polysiloxane): Simple, widely used, slight underestimation",
    "Method 2 – Pantographic Tracing (Gothic arch): Most accurate; records both sagittal and horizontal paths",
    "Method 3 – Axiographic Recording: Electronic condylography; highly accurate, requires special equipment",
    "Method 4 – Cephalometric Radiograph: Articular eminence inclination from lateral ceph tracing",
    "dos Santos et al. 2003: Wax protrusive record (mean 29.8°) vs pantograph (mean 38.3°) – significant underestimation with wax record",
    "Goyal MK & Goyal S 2011: Arcon (Hanau Wide-Vue) condylar values matched cephalometric values closely; non-arcon (Hanau H2) showed significant discrepancy",
    "Tannamala PK et al. 2012: Panoramic radiograph vs protrusive record – reasonable correlation but not substitute",
], note="dos Santos J Jr. PMID: 12589287; Goyal MK. PMID: 22484898; Tannamala PK. PMID: 22339685")

# ── SLIDE 32 : Bennett Movement ─────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "BENNETT MOVEMENT – DEFINITION & MECHANICS", [
    "Definition (GPT-9): The bodily lateral movement or lateral shift of the mandible resulting from the movements of the condyles along the lateral pterygoid plates during lateral jaw movements",
    "Named after: Norman G. Bennett (1908) who first described lateral mandibular movements",
    "Two components:",
    "  1. IMMEDIATE SIDE SHIFT (ISS): Pure bodily lateral movement at start of excursion (0.5–2 mm)",
    "  2. PROGRESSIVE SIDE SHIFT (PSS): Lateral component continuing through entire excursion",
    "Working side condyle: Rotates AND shifts laterally (lateral pole moves outward – Fischer angle)",
    "Non-working/balancing side condyle: Moves forward, downward, and inward",
    "Fischer angle: Angle between sagittal plane and path of non-working condyle in horizontal plane",
    "On Hanau articulator: Simulated by Bennett angle (progressive) + radial shift (immediate)",
], note="Bennett NG. A contribution to the study of the movements of the jaw. Proc R Soc Med. 1908; Okeson JP, 2019")

# ── SLIDE 33 : Bennett Angle on Articulator ─────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "BENNETT ANGLE – HANAU WIDE-VUE MECHANICS", [
    "Bennett angle: Angle formed between the sagittal plane and the path of the non-working condyle",
    "Location on Hanau Wide-Vue: Vertical axis adjustment of condylar guidance housing",
    "Scale: 0° to 30° on the medial wall of condylar track",
    "Setting default: 15° (average value for complete dentures); initial preparation = 30°",
    "Progressive Bennett angle: Simulated by rotating condylar track around vertical axis",
    "  Corresponds to medial wall inclination of articular fossa",
    "Immediate side shift (radial shift): 3 mm radius adjustment on Wide-Vue II",
    "  Mandible can shift up to 3 mm laterally before engaging progressive Bennett angle",
    "Adjustment using lateral interocclusal record: Seat record, guide upper member to lateral position until 'brass-to-brass'",
    "Or calculated using Hanau formula: L = H/8 + 12",
], note="Whip Mix Corporation 2020; Bhawsar SV et al. J Indian Prosthodont Soc. 2015 PMID: 26929535")

# ── SLIDE 34 : Section Divider – Hanau Formula ──────────────────────────────
s = prs.slides.add_slide(blank)
section_divider(s, "08", "Hanau Formula\nL = H/8 + 12",
                "Mathematical relationship between protrusive and lateral condylar guidance")

# ── SLIDE 35 : Hanau Formula ─────────────────────────────────────────────────
s = prs.slides.add_slide(blank)
formula_slide(s,
    "HANAU'S FORMULA FOR LATERAL CONDYLAR GUIDANCE",
    "L = H / 8 + 12",
    [
        "L = Lateral condylar guidance (Bennett angle) in degrees",
        "H = Horizontal condylar (protrusive) inclination in degrees",
        "Example: If H = 38° → L = 38/8 + 12 = 4.75 + 12 ≈ 17°",
        "Example: If H = 30° → L = 30/8 + 12 = 3.75 + 12 ≈ 15.75° ≈ 16°",
        "Example: If H = 16° → L = 16/8 + 12 = 2 + 12 = 14°",
        "Formula first described by Hanau (1926); still used in routine prosthodontic practice",
        "Provides AVERAGE estimate – actual values vary significantly between individuals",
    ],
    note="Hanau RL, 1926; Javid NS, Porter MR. J Prosthet Dent. 1975;34(3):254-8. PMID: 1100807")

# ── SLIDE 36 : Hanau Formula – Clinical Evidence ────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "HANAU FORMULA – CLINICAL VALIDATION & LIMITATIONS", [
    "Javid & Porter 1975: Hanau formula gives small range of variation in lateral guidance (narrow window)",
    "  Recommended lateral interocclusal records when PRECISE restorations are needed",
    "Bhawsar et al. 2015: Formula-derived values (14–17°) vs K7 jaw tracker (8–40°) – STATISTICALLY SIGNIFICANT difference (P<0.05)",
    "  Formula underestimates range of individual variation",
    "  Right and left sides differed significantly when measured with jaw tracker but not with formula",
    "Chen X et al. 2007: Mathematical 3D model of mandibular movement on Hanau articulator – confirmed formula approximations",
    "Mack PJ 1989: Computer analysis – cuspal guidance as determinant of condylar movement",
    "Clinical recommendation: Use formula as initial setting; refine with lateral interocclusal records for precision cases",
    "Formula most appropriate for: complete dentures, removable partial dentures, diagnostic work-up",
], note="Bhawsar SV et al. PMID: 26929535; Javid NS. PMID: 1100807; Chen X. PMID: 17713263")

# ── SLIDE 37 : Section Divider – Programming ────────────────────────────────
s = prs.slides.add_slide(blank)
section_divider(s, "09", "Programming the\nHanau Articulator",
                "Step-by-step laboratory and clinical procedures")

# ── SLIDE 38 : Articulator Preparation ──────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "STEP 1 – ARTICULATOR PREPARATION", [
    "Set protrusive inclination of BOTH condylar guidances to 30° and tighten thumbnuts",
    "Set Bennett angles of BOTH condylar guidances to 15° (or 30° for complete denture initial)",
    "Align incisal pin to mid-line calibration at top edge of upper member",
    "Set incisal guide table to 0° and tighten locknut",
    "Tighten centric locks – restricts articulator to pure opening/closing only",
    "Purpose: Standardized starting position before facebow transfer and cast mounting",
    "Ensure condylar elements are seated fully in condylar tracks (check centric stops)",
    "Inspect all locknut tightness to prevent drift during mounting procedure",
], note="Whip Mix Corporation. Hanau Wide-Vue Instructions, 2020")

# ── SLIDE 39 : Maxillary Cast Mounting ──────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "STEP 2 – MOUNTING MAXILLARY CAST (FACEBOW TRANSFER)", [
    "Complete facebow / springbow registration intraorally as described",
    "Detach bitefork assembly from patient; disinfect all components",
    "Attach mounting platform (lower member) to articulator lower member",
    "Attach bitefork assembly to mounting jig platform with cast support rod",
    "Index cast base: make 2–3 sharp cuts/grooves in cast base for plaster retention",
    "Mix mounting plaster (or stone) and apply to underside of mounting plate",
    "Set maxillary cast against bitefork index; allow plaster to set fully",
    "Remove facebow assembly; maxillary cast now oriented to transverse hinge axis",
    "Verify seating: no rocking, no gaps, cast stable on mounting plate",
    "Accuracy check: use occlusal index to verify cast matches intraoral registration",
], note="Whip Mix Corporation, 2020; Heartwell CM. Syllabus of Complete Dentures")

# ── SLIDE 40 : Mandibular Cast Mounting ─────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "STEP 3 – MOUNTING MANDIBULAR CAST (CENTRIC RELATION RECORD)", [
    "Record centric relation (CR) with appropriate material: wax, ZOE paste, polysiloxane",
    "Centric relation: Most superior, anterior position of condyle in glenoid fossa (GPT-9)",
    "Seat CR record on maxillary cast on articulator",
    "Close articulator with centric locks engaged until incisal pin contacts guide table at correct OVD",
    "Check: CR record should not cause articulator to spring open; record should be stable",
    "Apply mounting plaster to underside of mandibular mounting plate",
    "Set mandibular cast against seated CR record; maintain gentle seating pressure",
    "Allow plaster to fully set (minimum 10 minutes) before removing CR record",
    "Verify: casts meet at correct OVD without rocking; articulator closes into same relationship",
], note="Heartwell CM. Syllabus of Complete Dentures; Zarb GA. Prosthodontic Treatment for Edentulous Patients, 12th ed")

# ── SLIDE 41 : Programming Condylar Guidance ────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "STEP 4 – PROGRAMMING CONDYLAR GUIDANCE (PROTRUSIVE)", [
    "Fabricate protrusive interocclusal record: patient protrudes ≥6 mm forward",
    "Verify protrusion: condylar elements must have moved equal distance (~6 mm) on both sides",
    "Seat protrusive record on mandibular cast on articulator",
    "Open centric locks; raise incisal pin to eliminate any anterior interference",
    "Guide upper member into protrusive position against seated record",
    "Loosen condylar inclination thumbnuts on BOTH condylar guidances",
    "Adjust condylar guidance inclination until condylar element contacts 'brass-to-brass' (element shoulder)",
    "Tighten BOTH condylar inclination thumbnuts",
    "Verify: repeat seating of record – articulator should return to same position reproducibly",
    "Record right and left protrusive inclination values for documentation",
], note="Whip Mix Corporation, 2020; dos Santos J Jr. PMID: 12589287")

# ── SLIDE 42 : Programming Bennett Angle ────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "STEP 5 – PROGRAMMING LATERAL CONDYLAR GUIDANCE (BENNETT ANGLE)", [
    "Method A – Hanau Formula: Calculate L = H/8 + 12; adjust Bennett angle calibration accordingly",
    "Method B – Lateral Interocclusal Record: More precise; uses actual jaw excursion",
    "Fabricate RIGHT lateral record: patient moves jaw to RIGHT working position",
    "Seat RIGHT lateral record on mandibular cast; loosen all thumbnuts and centric locks; raise incisal pin",
    "Guide upper member to RIGHT lateral position against seated record",
    "Adjust LEFT condylar guidance Bennett angle until 'brass-to-brass' contact on LEFT (balancing) side",
    "Tighten LEFT Bennett angle thumbnut; document value",
    "Repeat: fabricate LEFT lateral record; adjust RIGHT condylar guidance Bennett angle similarly",
    "Final check: seat protrusive record again to confirm protrusive values unchanged",
], note="Whip Mix Corporation, 2020; Javid NS, Porter MR. PMID: 1100807")

# ── SLIDE 43 : Section Divider – Types of Hanau ─────────────────────────────
s = prs.slides.add_slide(blank)
section_divider(s, "10", "Types of Hanau Articulators",
                "Wide-Vue, Wide-Vue II, H2, Radialshift, and accessories")

# ── SLIDE 44 : Hanau Wide-Vue ────────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "HANAU WIDE-VUE ARTICULATOR", [
    "Type: Semi-adjustable, ARCON design",
    "Condylar track: CLOSED (enclosed housing) – upper member CANNOT be removed during waxing",
    "Condylar inclination: Adjustable -20° to +60°",
    "Bennett angle: Adjustable 0° to 30°; calibrated scale on housing",
    "Accepts: Hanau Springbow facebow transfer",
    "Features: Right and left centric latches; incisal guide pin; customizable incisal table",
    "Calibrations: Visible from same side of articulator for right and left guidance",
    "Radial shift: NOT present in original Wide-Vue (progressive Bennett only)",
    "Use case: Complete dentures, removable partial dentures, fixed prosthodontics",
    "P-R Screw: Protrusive-retrusive programming; 6 mm protrusion / 3 mm retrusion range",
], note="Whip Mix Corporation. Hanau Wide-Vue Instructions, 2020")

# ── SLIDE 45 : Hanau Wide-Vue II ─────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "HANAU WIDE-VUE II ARTICULATOR", [
    "Type: Semi-adjustable, ARCON design – IMPROVED version of Wide-Vue",
    "Condylar track: OPEN – upper member CAN be removed for waxing (spring latch mechanism)",
    "Key difference from Wide-Vue I: Open vs closed condylar track",
    "Radial shift: 3 mm radius allowing immediate side shift before engaging progressive Bennett angle",
    "All other specifications same as Wide-Vue I: -20° to +60° protrusion; 0° to 30° Bennett",
    "Accessories: Remounting record jig, adjustable incisal pin, plastic/magnetic mounting plates, instrument case",
    "Converter magnetic plates: Allow quick-change of casts without re-mounting",
    "Orbital gauge: Ensures correct orbital indicator height during facebow transfer",
    "Clinical advantage: Open track + radial shift = more anatomically accurate movement simulation",
], note="Whip Mix Corporation; Goyal MK PMID: 22484898")

# ── SLIDE 46 : Hanau H2 ─────────────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "HANAU H2 ARTICULATOR", [
    "Type: Semi-adjustable, NON-ARCON design",
    "Design: Condylar guidance on upper member; condylar element (sphere) also on upper member",
    "Historical model: Based on Hanau Model H (1920s), updated to H2",
    "Condylar inclination: Adjustable; set using protrusive record",
    "Bennett angle: Adjustable; set using lateral record or Hanau formula",
    "Facebow: Accepts Hanau Springbow",
    "Limitation: Non-arcon design – condyle-fossa relationship changes with degree of jaw opening",
    "  Condylar guidance angle 'effectively' changes as articulator opens more widely",
    "Goyal et al. 2011: H2 (non-arcon) showed significantly different sagittal condylar values vs cephalometric measurements; Wide-Vue (arcon) matched closely",
    "Use: Teaching, diagnostic casts, fixed prosthodontics where precision demands allow",
], note="Goyal MK, Goyal S. PMID: 22484898")

# ── SLIDE 47 : Hanau Comparison Table ───────────────────────────────────────
s = prs.slides.add_slide(blank)
table_slide(s, "HANAU ARTICULATOR MODELS – COMPARISON",
    ["Feature", "Wide-Vue I", "Wide-Vue II", "H2 (H2-O)"],
    [
        ["ARCON/Non-ARCON", "ARCON", "ARCON", "Non-ARCON"],
        ["Condylar track", "Closed", "Open", "Adjustable"],
        ["Upper member removal", "Not possible", "Possible (spring latch)", "Possible"],
        ["Radial shift", "Not available", "3 mm radius", "Not available"],
        ["Facebow", "Springbow", "Springbow", "Springbow"],
        ["Protrusive range", "-20° to +60°", "-20° to +60°", "Adjustable"],
        ["Bennett angle range", "0° to 30°", "0° to 30°", "Adjustable"],
        ["Primary use", "Complete dentures", "Complete & fixed", "Fixed prosthodontics"],
    ],
    note="Whip Mix Corporation product catalog; Goyal MK PMID: 22484898")

# ── SLIDE 48 : Section Divider – Clinical Applications ──────────────────────
s = prs.slides.add_slide(blank)
section_divider(s, "11", "Clinical Applications",
                "Complete dentures, fixed prosthodontics, and beyond")

# ── SLIDE 49 : Complete Denture Application ──────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "HANAU ARTICULATOR IN COMPLETE DENTURE FABRICATION", [
    "Gold standard approach: Facebow + semi-adjustable articulator (Hanau Wide-Vue) for complete dentures",
    "STEP 1: Diagnostic wax-up – evaluate esthetics and occlusal scheme",
    "STEP 2: Jaw relation records – CR at correct OVD using face-bow",
    "STEP 3: Programming – condylar guidance and Bennett angle set with interocclusal records",
    "STEP 4: Tooth arrangement – posterior teeth set following Hanau Quint principles",
    "STEP 5: Bilateral Balanced Occlusion (BBO) verified – contact in CR and all excursions",
    "STEP 6: Laboratory remount after processing – correct denture base distortion",
    "STEP 7: Clinical remount after insertion – chairside occlusal adjustment",
    "Nishyama et al. 2026: Hanau Quint interrelationships for BBO validated digitally AND analogically",
], note="Zarb GA. Prosthodontic Treatment for Edentulous Patients, 12th ed; PMID: 41783841")

# ── SLIDE 50 : Fixed Prosthodontics Application ──────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "HANAU ARTICULATOR IN FIXED PROSTHODONTICS", [
    "Semi-adjustable articulator preferred over mean-value for complex fixed cases",
    "Full arch reconstruction: Facebow + condylar programming mandatory",
    "Custom incisal guide table: Fabricated from autopolymerizing resin to mimic patient's anterior guidance",
    "Long-centric provision: Articulator allows programming of 'freedom in centric' – critical for FPDs",
    "Condylar guidance accuracy: Direct effect on posterior cusp inclinations in wax pattern",
    "Mutually protected occlusion: Canine guidance verified on articulator before fabrication",
    "Posterior disocclusion in protrusion: Verified by checking posterior contact loss during protrusion",
    "Limitation: Semi-adjustable articulators approximate – cannot fully reproduce all TMJ movements",
    "Indication for fully adjustable: Extensive full-arch cases with complex movement patterns",
], note="Ash MM. Ramfjord SP. Occlusion, 4th ed; Okeson JP, 2019")

# ── SLIDE 51 : Balanced Occlusion ──────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "BILATERAL BALANCED OCCLUSION (BBO) – CONCEPT & ARTICULATOR ROLE", [
    "BBO: Simultaneous bilateral anterior and posterior occlusal contact in centric AND eccentric positions",
    "Required for: Complete dentures – prevents tipping/displacement during function",
    "NOT required for: Natural dentition, implant-supported dentures (controverted)",
    "Articulator role: Allows verification of BBO in protrusion, right lateral, left lateral excursions",
    "Hanau Quint factors must be 'balanced' to achieve BBO:",
    "  Increasing condylar guidance → must increase compensating curve or cusp height",
    "  Flatter occlusal plane → needs taller cusps or steeper compensating curve",
    "Trapezzano's Triad: Simplified Quint – condylar guidance, incisal guidance, occlusal plane",
    "Boucher's concept: Condylar guidance, incisal guidance, tooth form as three critical factors",
    "Modern complete dentures: Mix of anatomic and semi-anatomic teeth with lingualized occlusion increasingly used",
], note="Nishyama R et al. PMID: 41783841; PMC3254368; Zarb GA, 2004")

# ── SLIDE 52 : Occlusal Concepts ─────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "OCCLUSAL CONCEPTS USED WITH HANAU ARTICULATOR", [
    "BALANCED OCCLUSION: BBO for complete dentures; all contacts in all excursions",
    "MUTUALLY PROTECTED OCCLUSION: Posterior teeth protect anterior in centric; anterior teeth disocclude posterior in excursions",
    "CANINE-GUIDED OCCLUSION: Canine teeth provide guidance in lateral excursions; posterior disocclusion",
    "LINGUALIZED OCCLUSION: Maxillary palatal cusps occlude with mandibular central fossae; reduces lateral forces",
    "NEUTROCENTRIC OCCLUSION (DeVan 1954): No anatomic posterior teeth; monoplane occlusion",
    "ORGANIC OCCLUSION (Stuart & Stallard 1961): Based on Border-Land occlusion; fully adjustable articulator needed",
    "Choice of concept depends on: Residual ridge morphology, opposing occlusion, patient age/adaptation",
], note="Zarb GA. Prosthodontic Treatment for Edentulous Patients, 12th ed; Okeson JP, 2019")

# ── SLIDE 53 : Remounting ────────────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "CLINICAL REMOUNTING – IMPORTANCE & PROCEDURE", [
    "WHY REMOUNT: Denture base processing distorts occlusion – laboratory & clinical remounting correct this",
    "LABORATORY REMOUNT (after processing):",
    "  Replace trial dentures on articulator using remounting record",
    "  Adjust occlusion with acrylic burs before patient insertion",
    "CLINICAL REMOUNT (after 24-hour insertion):",
    "  Patient uses denture 24 hours – tissues adapt, minor changes occur",
    "  New centric relation record made with dentures in mouth",
    "  Remount on Hanau articulator with new record",
    "  Occlusal discrepancies corrected: selective grinding following BULL rule",
    "BULL Rule: Buccal of Upper, Lingual of Lower cusps adjusted in balanced occlusion",
    "Studies show: Remounting reduces occlusal errors by 50–80% compared to no remounting",
], note="Heartwell CM. Syllabus of Complete Dentures; Zarb GA, 2004")

# ── SLIDE 54 : Limitations ──────────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "LIMITATIONS OF HANAU SEMI-ADJUSTABLE ARTICULATOR", [
    "Cannot reproduce IMMEDIATE SIDE SHIFT accurately (except Wide-Vue II radial shift)",
    "Intercondylar distance is FIXED – actual patient values vary (110–145 mm)",
    "CURVED condylar path not reproduced – only straight-line simulation",
    "Non-working condyle path approximated by straight Bennett angle line",
    "Soft tissue resistance, neuromuscular control, saliva – NOT simulated",
    "Accuracy depends heavily on quality of interocclusal records",
    "Protrusive wax records underestimate actual condylar inclination vs pantographic tracings",
    "Cannot record TMJ pathology (disc displacement, osteoarthritis) – assumes normal TMJ",
    "Incisal guide table: flat/linear – cannot reproduce complex anterior guidance curves",
    "Comparison: Fully adjustable articulators (Stuart, Denar D5A) superior accuracy but impractical for routine cases",
], note="dos Santos J Jr. PMID: 12589287; Bhawsar SV. PMID: 26929535")

# ── SLIDE 55 : Section Divider – Digital Integration ────────────────────────
s = prs.slides.add_slide(blank)
section_divider(s, "12", "Digital Integration &\nVirtual Articulators",
                "CAD/CAM, digital facebows, and virtual occlusion analysis")

# ── SLIDE 56 : Virtual Articulator ──────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "VIRTUAL ARTICULATORS – CONCEPTS & TYPES", [
    "Virtual articulator: Software-based simulation of jaw movements within CAD/CAM workflow",
    "Input data: Digital facebow, CBCT condylar data, intraoral scan, jaw tracking records",
    "Types:",
    "  Mean-value virtual articulators: Fixed average values (simplest; e.g., exocad DentalCAD)",
    "  Semi-adjustable virtual articulators: Accept facebow + protrusive records",
    "  Fully adjustable virtual articulators: Accept condylographic/jaw tracking data",
    "Revilla-Leon M et al. 2024: Review of digital facebow methods – photogrammetry, CBCT, intraoral scan-derived axis; all methods clinically viable",
    "Nishyama et al. 2026: 2D digital articulator based on Hanau dimensions validated Quint relationships",
    "Advantage: No plaster, no physical mounting errors, instant reconfiguration",
    "Limitation: Cannot fully replace physical articulator for verification and final adjustment",
], note="Revilla-Leon M et al. J Esthet Restor Dent. 2024. PMID: 38778662; PMID: 41783841")

# ── SLIDE 57 : Digital Workflow ─────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "DIGITAL WORKFLOW WITH VIRTUAL ARTICULATOR", [
    "STEP 1: Intraoral scan (IOS) of maxillary and mandibular arches",
    "STEP 2: Digital facebow – photogrammetric or CBCT-based hinge axis location",
    "STEP 3: Jaw motion tracking (JMT) for condylar path and Bennett angle recording",
    "STEP 4: Upload to virtual articulator in CAD software (exocad, 3Shape, Cerec)",
    "STEP 5: Design restoration with accurate occlusal contacts verified in all excursions",
    "STEP 6: Mill/print restoration; verify with remount check",
    "Advantages: Reduced chairside time, reproducible, archivable, shareable with lab",
    "Limitations: High equipment cost; accuracy of digital facebow still debated vs kinematic",
    "Hybrid approach: Physical Hanau articulator for fabrication + digital verification increasingly common",
], note="Revilla-Leon M et al. PMID: 38778662")

# ── SLIDE 58 : CBCT & TMJ Assessment ────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "CBCT-GUIDED CONDYLAR ASSESSMENT IN ARTICULATOR PROGRAMMING", [
    "CBCT: Provides 3D visualization of condylar morphology, position, and eminence inclination",
    "Condylar morphology: Round, oval, flat, convex, bicondylar, erosive patterns",
    "Eminence inclination from CBCT: Correlates with protrusive condylar guidance",
    "Tannamala et al. 2012: Panoramic radiograph condylar inclination correlated with protrusive record (pilot study)",
    "Cephalometric measurement: Articular eminence angle from lateral cephalogram = condylar guidance surrogate",
    "CBCT in TMD: Rules out bony pathology before articulator programming",
    "3D printing of condyles: Now possible to fabricate condylar analog from CBCT for articulator verification",
    "Future direction: CBCT data directly uploaded to virtual articulator (no physical records needed)",
], note="Tannamala PK et al. J Prosthodont. 2012;21(3):182-7. PMID: 22339685")

# ── SLIDE 59 : Section Divider – Key Concepts Review ────────────────────────
s = prs.slides.add_slide(blank)
section_divider(s, "13", "Key Concepts Review",
                "Summary tables and clinical decision pathways")

# ── SLIDE 60 : Summary Table – Articulator Settings ─────────────────────────
s = prs.slides.add_slide(blank)
table_slide(s, "SUMMARY: HANAU WIDE-VUE – DEFAULT VS PATIENT-SPECIFIC SETTINGS",
    ["Parameter", "Default Setting", "Clinical Range", "Method of Recording"],
    [
        ["Protrusive inclination", "30°", "-20° to +60°", "Protrusive interocclusal record"],
        ["Bennett angle (L)", "15°", "0° to 30°", "Lateral record or L=H/8+12"],
        ["Incisal guidance", "0° (flat)", "0° to custom", "Custom resin or fixed angle"],
        ["Occlusal vertical dimension", "Per incisal pin", "Patient specific", "Willis gauge, cephalometric, phonetics"],
        ["Intercondylar distance", "Fixed ~110 mm", "Not adjustable (Wide-Vue)", "N/A (use fully adjustable for custom)"],
        ["Radial shift (Wide-Vue II)", "0 mm", "0–3 mm", "Immediate side shift record"],
    ],
    note="Whip Mix Corporation, 2020; Zarb GA, 2004")

# ── SLIDE 61 : Clinical Decision Tree ───────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "CLINICAL DECISION: WHICH ARTICULATOR TO USE?", [
    "SIMPLE DIAGNOSTIC CASTS / STUDY MODELS → Class I (Occludator) or Mean-value articulator",
    "SINGLE CROWN / SHORT-SPAN FPD → Mean-value OR semi-adjustable (Class II or III)",
    "COMPLETE DENTURES → Semi-adjustable ARCON (Hanau Wide-Vue) with facebow – MINIMUM requirement",
    "FULL ARCH FIXED RECONSTRUCTION → Semi-adjustable with facebow + interocclusal records",
    "COMPLEX FULL ARCH (TMD, parafunctions, complex excursions) → Fully adjustable articulator",
    "DIGITAL WORKFLOWS (CAD/CAM) → Virtual semi-adjustable with digital facebow",
    "TMJ PATHOLOGY CASES → Fully adjustable after TMJ treatment and stabilization",
    "TEACHING/STUDENT LABORATORIES → Mean-value or Hanau non-adjustable (Hanau-Mate)",
], note="Okeson JP, 2019; Zarb GA, 2004; ACP Guidelines")

# ── SLIDE 62 : Verification & Quality Control ────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "ARTICULATOR VERIFICATION – QUALITY CONTROL STEPS", [
    "Pre-use check: All moving parts free; no loose screws; condylar tracks clean",
    "Incisal pin verification: Mid-line aligned; no drift under load",
    "Cast stability: No rocking; even plaster coverage; no voids at margins",
    "CR record verification: Cast closes reproducibly into record with no spring-back",
    "Protrusive record check: Equal condylar movement both sides (measure with P-R screw readings)",
    "Lateral record check: 'Brass-to-brass' contact achieved on balancing side",
    "Occlusal contact check: Use 8-micron shim stock or articulating paper to verify contacts",
    "Remount verification: Post-processing laboratory remount reduces > 0.5 mm occlusal errors",
    "Documentation: Record all condylar guidance values in patient file for future reference",
], note="Whip Mix Corporation, 2020; Heartwell CM. Syllabus of Complete Dentures")

# ── SLIDE 63 : Common Errors ─────────────────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "COMMON ERRORS IN ARTICULATOR USE & THEIR CONSEQUENCES", [
    "ERROR: Mounting without facebow → incorrect arc of closure → posterior open bite after processing",
    "ERROR: Inadequate protrusion (<6 mm) in record → underestimated condylar guidance",
    "ERROR: Poor CR record (patient not in true CR) → premature contacts post-insertion",
    "ERROR: Loose thumbnuts during programming → condylar values drift; inaccurate settings",
    "ERROR: Wrong side programming (seating right record to set right instead of left Bennett) → reversed occlusion",
    "ERROR: Ignoring OVD (incisal pin not set) → wrong vertical dimension reproduced",
    "ERROR: Single mounting plaster mix for both casts → expansion differences cause errors",
    "ERROR: Overloading incisal pin during closure → pin bends; VD error",
    "ERROR: Not doing clinical remount → 25–50% of patients have clinically significant occlusal errors post-processing",
], note="Heartwell CM; Zarb GA; Clinical experience & prosthodontic teaching guidelines")

# ── SLIDE 64 : Gnathic Mechanics Summary ────────────────────────────────────
s = prs.slides.add_slide(blank)
content_slide(s, "GNATHIC SYSTEM MECHANICS – COMPREHENSIVE SUMMARY", [
    "Gnathic system = TMJ (posterior determinants) + anterior teeth (anterior determinants)",
    "Posterior determinants are UNALTERABLE clinically → must be recorded accurately",
    "Anterior determinants ARE alterable → adjusted during prosthetic treatment",
    "Hanau articulator simulates: Condylar path, Bennett movement, rotational/translational movements",
    "Key formula: Sagittal condylar guidance (H) → Lateral guidance approximated: L = H/8 + 12",
    "Hanau Quint: All 5 factors interdependent → system approach to occlusal design",
    "Balanced bilateral occlusion: Prevents denture displacement; requires harmonious Quint factors",
    "Digital articulators extend Hanau principles into CAD/CAM workflow; analog validity confirmed by Nishyama 2026",
    "Semi-adjustable articulator (Hanau) remains gold standard for routine complete denture fabrication",
], note="Nishyama R et al. PMID: 41783841; PMC3254368; Okeson JP, 2019")

# ── SLIDE 65 : References ─────────────────────────────────────────────────────
s = prs.slides.add_slide(blank)
reference_slide(s, [
    "Hanau RL. Articulation defined, explained and formulated. J Am Dent Assoc. 1926;13:1694-1709.",
    "Javid NS, Porter MR. The importance of the Hanau formula in construction of complete dentures. J Prosthet Dent. 1975;34(3):254-8. PMID: 1100807.",
    "dos Santos J Jr, Nelson S, Nowlin T. Comparison of condylar guidance setting obtained from a wax record versus an extraoral tracing. J Prosthet Dent. 2003;90(1):52-8. PMID: 12589287.",
    "Chen X, Lu E, Chen J. A mathematical model of 3-dimensional excursive movement of the mandible on Hanau articulator. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi. 2007;24(3):559-63. PMID: 17713263.",
    "Goyal MK, Goyal S. Discrepancy in condylar guidance values between arcon and non-arcon articulators. Indian J Dent Res. 2011;22(6):818-23. PMID: 22484898.",
    "Tannamala PK et al. Condylar guidance: correlation between protrusive interocclusal record and panoramic radiograph. J Prosthodont. 2012;21(3):182-7. PMID: 22339685.",
    "Bhawsar SV, Marathe AS, Ansari SA. Evaluation of Hanau's formula in determination of lateral condylar guidance. J Indian Prosthodont Soc. 2015;15(4):356-61. PMID: 26929535.",
    "Maveli TC et al. In vitro comparison of maxillary occlusal plane orientation with five facebow systems. J Prosthet Dent. 2015;114(4):574-9. PMID: 26139043.",
    "Revilla-Leon M, Zeitler JM, Kois JC. Digital facebow methods for maxillary cast transfer. J Esthet Restor Dent. 2024. PMID: 38778662.",
    "Nishyama R et al. Revisiting Hanau's Quint: novel digital analysis of laws of articulation. J Adv Prosthodont. 2026;18(1):46. PMID: 41783841.",
    "Whip Mix Corporation. Hanau Wide-Vue Series Arcon Articulators - Instructions for Use. 2020.",
    "Zarb GA. Prosthodontic Treatment for Edentulous Patients, 12th ed. Mosby, 2004.",
    "Okeson JP. Management of Temporomandibular Disorders and Occlusion. 8th ed. Elsevier, 2019.",
    "Heartwell CM. Syllabus of Complete Dentures. 4th ed. Lea & Febiger, 1986.",
])

# ── SLIDE 66 : Acknowledgement / Thank You ──────────────────────────────────
s = prs.slides.add_slide(blank)
add_rect(s, 0, 0, 13.333, 7.5, NAVY)
add_rect(s, 0, 0, 0.35, 7.5, TEAL)
add_rect(s, 0, 6.5, 13.333, 0.15, GOLD)
add_text(s, "THANK YOU", 0.6, 2.0, 12.0, 1.5,
         font_size=60, bold=True, color=WHITE, align=PP_ALIGN.CENTER, v_anchor=MSO_ANCHOR.MIDDLE)
add_text(s, "Questions & Discussion", 0.6, 3.8, 12.0, 0.6,
         font_size=24, italic=True, color=GOLD, align=PP_ALIGN.CENTER)
add_text(s, "Hanau Articulator & Gnathic System Mechanics  |  Prosthodontics 2026",
         0.6, 5.8, 12.0, 0.5,
         font_size=14, color=WHITE, align=PP_ALIGN.CENTER)

# ── SAVE ─────────────────────────────────────────────────────────────────────
out_path = "/tmp/workspace/hanau-articulator/Hanau_Articulator_Gnathic_System.pptx"
prs.save(out_path)
print(f"Saved: {out_path}")
print(f"Total slides: {len(prs.slides)}")