Palatal invaginations in incisors and the presence of cusps of Carabelli.
D002648:Child; D005260:Female; D006801:Humans; D007180:Incisor / Q000002:abnormalities*; D008297:Male; D008963:Molar / Q000002:abnormalities*; D014071:Tooth Abnormalities / Q000453:epidemiology*