title: Root canal treatment of three-rooted maxillary second premolars: report of four cases.
abstract: The aim of this report is to contribute to a better understanding of the radiographic, clinical and anatomic findings in maxillary second premolars. This paper reports the endodontic treatment of two cases of three-rooted three-canal maxillary second premolars in different patients, and two sound maxillary second premolars also with three canals and three independent roots in a sibling of one of the patients. Although the presence of maxillary second premolars with one or two canals and one root is much more common, other anatomic conditions can be found. A correct clinical and radiographic diagnosis based on knowledge of root canal anatomy and critical interpretation of radiographs is necessary for a safer and successful endodontic treatment of these teeth.
authors.affiliation: Araraquara Dental School, São Paulo State University, UNESP, Araraquara, São Paulo, Brazil.
authors.forename: Danilo Barbosa
authors.initials: DB
authors.lastname: Barros
authors.forename: Juliane Maria
authors.initials: JM
authors.lastname: Guerreiro Tanomaru
authors.forename: Mário
authors.initials: M
authors.lastname: Tanomaru-Filho
mesh_terms: D000328:Adult; D001641:Bicuspid / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D003786:Dental Pulp Cavity / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008437:Maxilla; D011859:Radiography; D012390:Root Canal Therapy / Q000379:methods*; D019228:Tooth Crown / Q000033:anatomy & histology; D014092:Tooth Root / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D055815:Young Adult