Anomalies of tooth numbers including peg-shaping
Finn, S.B.
Birth Defects Original Article Series 7(7): 185-193
1971
ISSN/ISBN: 0547-6844 PMID: 5173204 Document Number: 31179
The congenital defects of hypodontia, peg-shaped teeth and hyperdontia appear to have a genetic basis. Peg-shaping is a modified expression of the same genotype as hypodontia. The defect is inherited as a dominant autosomal trait with variable expressivity. Third molars are the most frequently missing teeth. Both hypodontia and hyperdontia are found in a number of well-defined genetic syndromes and in most instances are common characteristics of the disease.