Anomalies of tooth numbers including peg-shaping.
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.
D000848:Anodontia / Q000000981:diagnostic imaging / Q000235:genetics; D001766:Blindness / Q000150:complications; D002648:Child; D002675:Child, Preschool; D003638:Deafness / Q000150:complications; D005006:Ethnicity; D005260:Female; D005799:Genes, Dominant; D006801:Humans; D008297:Male; D010375:Pedigree; D011859:Radiography; D012730:Sex Chromosomes; D014071:Tooth Abnormalities / Q000150:complications / Q000453:epidemiology / Q000235:genetics