Fusion, gemination, oligodontia, and taurodontism.
D000848:Anodontia / Q000473:pathology*; D002648:Child; D003786:Dental Pulp Cavity / Q000002:abnormalities; D005671:Fused Teeth / Q000473:pathology; D006801:Humans; D008297:Male; D014071:Tooth Abnormalities / Q000473:pathology*