title: [A case of an impacted mandibular 1st molar with malformation of the roots].
mesh_terms: D002648:Child; D006801:Humans; D008297:Male; D008963:Molar / Q000002:abnormalities*; D014092:Tooth Root / Q000002:abnormalities*; D014095:Tooth, Impacted / Q000473:pathology*