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Anatomy & Histology · single question

A panoramic radiograph shows a single missing tooth with no other dental anomalies. What is the correct terminology for this finding?

  1. Anodontia (complete absence of all teeth)
  2. Hypodontia (congenital absence of one or a few teeth, typically fewer than 6)
  3. Oligodontia (congenital absence of 6 or more teeth)
  4. Supernumerary tooth
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Correct answer: B. Hypodontia (congenital absence of one or a few teeth, typically fewer than 6)

Hypodontia refers to the congenital absence of one or a small number of teeth (generally fewer than 6, excluding third molars in some definitions), distinguishing it from oligodontia (6 or more missing teeth) and anodontia (complete absence of all teeth, an extremely rare finding usually associated with severe ectodermal dysplasia).

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