cavosurface bevel rounded angles cavity preparation restorations operative dentistry MDS

https://ijce.in/archive/volume/7/issue/3/article/3689

cavosurface bevel composite restoration marginal integrity

Hand-drawn style dental diagram showing types of cavosurface margin angles: three cross-section tooth cavity drawings side by side labeled 1) Butt Joint (90 degrees) for amalgam, 2) Bevel (greater than 90 degrees) for cast gold, 3) Flare for porcelain/ceramic. Each drawing shows the cavity wall, enamel rods, and the angle formed at the junction. Black and white pencil sketch style with annotation arrows and degree labels. Educational dental anatomy diagram.

Hand-drawn dental diagram showing intracoronal bevel types in cross-section: Partial bevel, Short bevel, Long bevel, Full bevel, Counter bevel, and Hollow ground bevel. Six separate small diagrams in black and white pencil sketch style with labels for each bevel type showing the tooth enamel wall and bevel angle. University dental study notes style.

Hand-drawn pencil sketch of rounded internal line angles and point angles in dental cavity preparation. Cross-section view showing: sharp unrounded angles on left (labeled INCORRECT - stress concentration) versus properly rounded angles on right (labeled CORRECT - stress distribution). Arrows showing stress distribution pattern. Also shows rounded axiopulpal line angle. Black and white educational diagram for dental students.

Hand-drawn black and white dental diagram showing cavosurface bevel specifications for different restorations in cross-section. Row 1: Amalgam restoration - 90 degree butt joint, no bevel. Row 2: Composite resin - bevel 45 degrees increasing enamel surface area. Row 3: Cast gold inlay - 30-40 degree metal margin bevel. Row 4: Glass ionomer - 90 degree butt joint no bevel. Row 5: Ceramic/porcelain - no bevel contraindicated. Pencil sketch educational chart style with angle measurements labeled.

Hand-drawn pencil sketch showing Class II amalgam cavity preparation from occlusal view and proximal cross-section. Labels pointing to: occlusal cavosurface angle 90-100 degrees (butt joint), gingival cavosurface bevel 15-20 degrees (only exception), proximal box with butt joint margins, marginal amalgam angle 80-90 degrees. Black and white educational diagram dental MDS exam notes style.