All of the following are causes of delayed dentition except: (A) Rickets, (B) Hyperparathyroidism, (C) Hypothyroidism, (D) Cleidocranial dysplasia
Answer is B. Delayed dentition means there is no eruption of teeth by the age of 13 months of age (mean + 35D).
Causes of delayed dentition:
Rickets
Down syndrome
Hypothyroidism
Hypoparathyroidism
Cleidocranial dysplasia