title: Presence of a facial accessory cusp on the mandibular right first permanent molar.
authors.forename: R
authors.initials: R
authors.lastname: Steelman
mesh_terms: D002648:Child; D006801:Humans; D008297:Male; D008334:Mandible; D008963:Molar / Q000002:abnormalities* / Q000473:pathology