Question 241 · LDEK · Etiology of malocclusion

Developmental abnormality typical for children with Down’s syndrome is:

  1. A. multiple supernumerary teeth.
  2. B. premature eruption of teeth.
  3. C. underdevelopment of the maxilla.
  4. D. underdevelopment of the mandible.
  5. E. microglossia.
Hint

Think of the typical midface appearance in trisomy 21 and its tendency towards Class III and crossbites.

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