title: Failure of endodontic treatment due to a palatal gingival groove in a maxillary lateral incisor with talon cusp and two root canals.
abstract: A case is presented in which endodontic treatment of a maxillary lateral incisor with a talon cusp and two root canals failed following a mistaken diagnosis. What was first diagnosed as an endodontic lesion was, in all probability, a primary periodontal lesion caused by the advance of bacteria from the gingival crevice to the apex along the radicular groove between the main tooth and the talon cusp.
authors.affiliation: School of Dentistry, University of Valencia, Spain.
authors.forename: H
authors.initials: H
authors.lastname: Fabra-Campos
mesh_terms: D000328:Adult; D003751:Dental Fistula / Q000209:etiology*; D003786:Dental Pulp Cavity / Q000002:abnormalities*; D003788:Dental Pulp Diseases / Q000209:etiology; D006801:Humans; D007180:Incisor / Q000002:abnormalities*; D008297:Male; D008437:Maxilla; D010510:Periodontal Diseases / Q000150:complications*; D012390:Root Canal Therapy / Q000009:adverse effects; D014071:Tooth Abnormalities / Q000150:complications; D014092:Tooth Root / Q000002:abnormalities*