[Congenital absence of teeth in the lower jaw in a four year old boy].
D006801:Humans; D007568:Jaw; D008334:Mandible; D009805:Odontogenesis; D014070:Tooth / Q000254:growth & development*
TEETH/development
Vrozhdennaia adentiia nizhnei chelusti u chetyrekhletnego malchika.