IMG_20260708_144603649.jpg
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Identify the teeth present in the patients oral cavity of age 9 years female
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Reading File
Based on the images analyzed, here is a detailed identification of the teeth present in this 9-year-old female patient's oral cavity:
Dental Findings - 9-Year-Old Female (Mixed Dentition Stage)
At age 9, a child is in the mixed dentition phase - a transitional period where primary (deciduous) teeth co-exist with erupting permanent teeth.
MAXILLARY (Upper) Arch
| Position | Tooth | Type | Status |
|---|---|---|---|
| 11, 21 | Upper Central Incisors | Permanent | Erupted - larger size, mamelons visible on incisal edges; slight rotation/overlap noted |
| Lateral incisors / posterior | Not clearly visible | - | Obscured by angle |
Note: Upper permanent central incisors appear erupted. The upper arch posteriors are not well visualized.
MANDIBULAR (Lower) Arch
| FDI Notation | Tooth | Type | Status |
|---|---|---|---|
| 31, 41 | Lower Central Incisors | Permanent | Erupted; crowding and mild labiolingual displacement present |
| 32, 42 | Lower Lateral Incisors | Permanent | Partially erupted / erupting; some ectopic displacement visible |
| 73 / 83 | Lower Left & Right Canines | Primary (deciduous) | Present |
| 74 / 84 | Lower First Primary Molars | Primary (deciduous) | Present bilaterally |
| 75 / 85 | Lower Second Primary Molars | Primary (deciduous) | Present; a dark area is visible on the lower left second primary molar (75) - suggestive of caries, existing restoration, or a stainless steel crown |
Summary of Dentition Present
Permanent teeth visible:
- Upper central incisors (11, 21) - erupted
- Lower central incisors (31, 41) - erupted
- Lower lateral incisors (32, 42) - erupting/partially erupted
Primary (deciduous) teeth present:
- Lower canines bilaterally (73, 83)
- Lower first molars bilaterally (74, 84)
- Lower second molars bilaterally (75, 85)
Total visible teeth: approximately 10-12
Clinical Notes
- Mixed dentition is entirely normal and expected at age 9.
- Crowding of lower permanent incisors is visible - common due to the size difference between permanent teeth and the smaller primary arch space.
- Dark lesion on lower left primary molar (75) - should be evaluated for dental caries or existing restoration.
- The upper arch posteriors and permanent first molars (16, 26, 36, 46) - which typically erupt around age 6 - could not be clearly assessed from these views. A panoramic radiograph (OPG) would be recommended to assess:
- Root resorption status of remaining primary teeth
- Position of unerupted permanent teeth (canines, premolars)
- Status of developing permanent second molars
Normal eruption sequence at age 9 - Expected permanent teeth by this age include: central incisors (age 6-8), lateral incisors (age 7-9), and first molars (age 6-7). At 9, canines and first premolars may be beginning to erupt. The findings here are consistent with normal mixed dentition development.
Tell me the mixed dentition present in the oral cavity of 9 year old female
Finding Sources
Finding Sources
Finding Sources
Finding Sources
The library does not contain a dedicated pediatric dentistry textbook, so I will answer from established dental knowledge combined with the image findings from the previous analysis.
Mixed Dentition Assessment - 9-Year-Old Female
What is Mixed Dentition?
The mixed dentition period spans approximately 6 to 12 years of age. It has two phases:
- Early mixed dentition: ~6-8 years (first permanent molars + lower central incisors erupt)
- Late mixed dentition: ~8-11 years - where this patient falls
At age 9, the patient is in the late mixed dentition phase.
Teeth PRESENT in the Oral Cavity (from image analysis)
Permanent Teeth Erupted
| FDI | Universal | Tooth | Eruption Age | Status in Patient |
|---|---|---|---|---|
| 11 | #8 | Maxillary Right Central Incisor | 7-8 yrs | ✅ Erupted |
| 21 | #9 | Maxillary Left Central Incisor | 7-8 yrs | ✅ Erupted |
| 31 | #24 | Mandibular Left Central Incisor | 6-7 yrs | ✅ Erupted |
| 41 | #25 | Mandibular Right Central Incisor | 6-7 yrs | ✅ Erupted |
| 32 | #23 | Mandibular Left Lateral Incisor | 7-8 yrs | ✅ Erupting/partially erupted |
| 42 | #26 | Mandibular Right Lateral Incisor | 7-8 yrs | ✅ Erupting/partially erupted |
Note: Permanent first molars (16, 26, 36, 46) erupt around age 6 and are likely present but were not clearly visible in the photos due to camera angle.
Primary (Deciduous) Teeth Still Present
| FDI | Universal | Tooth | Normal Shedding Age | Status in Patient |
|---|---|---|---|---|
| 73 | #p | Mandibular Left Primary Canine | 9-12 yrs | ✅ Present |
| 83 | #p | Mandibular Right Primary Canine | 9-12 yrs | ✅ Present |
| 74 | #p | Mandibular Left Primary First Molar | 10-12 yrs | ✅ Present |
| 84 | #p | Mandibular Right Primary First Molar | 10-12 yrs | ✅ Present |
| 75 | #p | Mandibular Left Primary Second Molar | 10-12 yrs | ✅ Present (dark lesion noted) |
| 85 | #p | Mandibular Right Primary Second Molar | 10-12 yrs | ✅ Likely present |
Diagrammatic Representation
UPPER ARCH (Maxilla)
[ ? ][ ? ][ ? ][ 12 ][ 11 ][ 21 ][ 22 ][ ? ][ ? ][ ? ]
↑ not visible in images ↑ Permanent teeth visible
LOWER ARCH (Mandible)
[ 85 ][ 84 ][ 83 ][ 42 ][ 41 ][ 31 ][ 32 ][ 73 ][ 74 ][ 75 ]
Primary ↑ teeth ↑ Permanent incisors
Summary Table
| Category | Teeth |
|---|---|
| Permanent teeth present | Upper central incisors (11, 21); Lower central incisors (31, 41); Lower lateral incisors (32, 42 - erupting) |
| Primary teeth present | Lower canines (73, 83); Lower 1st molars (74, 84); Lower 2nd molars (75, 85) |
| Teeth awaiting eruption | Permanent canines (13,23,33,43), Premolars (14,15,24,25,34,35,44,45), Upper laterals if not yet erupted |
| Likely present but not visible | Permanent 1st molars (16, 26, 36, 46) |
Key Clinical Observations
- Crowding of lower permanent incisors - very typical at this age; the permanent teeth are larger than the primary teeth they replace (leeway space is not yet fully utilized)
- Primary canines and molars retained - normal for age 9; these shed between ages 9-12
- Dark lesion on tooth 75 - needs evaluation for dental caries (early carious lesion or existing restoration)
- Space management - the primary molars (74, 75, 84, 85) are important space maintainers for the erupting premolars (14, 15, 24, 25, 34, 35, 44, 45)
A panoramic radiograph (OPG) is strongly recommended to assess root resorption of remaining primary teeth, confirm the eruption status of permanent first molars, and evaluate developing premolars and canines.
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