Implants · patient case question
A patient is congenitally missing one tooth. This is termed:
Patient case: Implants, spaces and a lost tooth
demo: 48-year-old male
chief: Wishes to replace a missing mandibular first molar with an implant.
history: Healthy non-smoker. He also has a Class II division 2 incisor relationship.
meds: None.
findings: CBCT shows 13 mm of bone height above the inferior alveolar canal at the proposed site. The mandibular arch shows a deep overbite. A separate panoramic film taken for a different patient is used to review counting of missing teeth.
Show answer and explanation
Correct answer: D. Hypodontia
- A. Hyperdontia is the presence of supernumerary teeth, which is the opposite condition.
- B. Oligodontia is the absence of six or more teeth excluding third molars, and it is frequently syndromic.
- C. Anodontia is the complete absence of all teeth and is very rare, associated with severe ectodermal dysplasia.
- D. Correct. Hypodontia is the absence of one to five teeth excluding third molars. It is the most common dental developmental anomaly, most often affecting third molars, then mandibular second premolars and maxillary lateral incisors.