Primary talon cusp.
Talon cusps are seen most frequently on maxillary incisors. Only recently have reports of talon cusps on primary teeth appeared. This was a case involving a primary maxillary lateral incisor.
D002675:Child, Preschool; D006801:Humans; D007180:Incisor / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000473:pathology; D008297:Male; D008437:Maxilla; D011859:Radiography; D014094:Tooth, Deciduous / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000473:pathology