title: Clinical management of dens invaginatus in a maxillary lateral incisor with the aid of cone-beam computed tomography--a case report.
abstract: This report describes non-surgical endodontic treatment of Oehlers' type III dens invaginatus in a maxillary lateral incisor with the aid of postobturation cone-beam computed tomography (CBCT). The endodontic treatment was initiated with the aid of a surgical operating microscope, and two canals, one of which represented the invagination, were instrumented, irrigated under passive ultrasonic activation and obturated with the lateral condensation technique. As postobturation periapical radiographs suggested the presence of untereated and/or unfilled areas in the root canal and invagination, CBCT was taken to assess the possibility of further treatment. The CBCT scans demonstrated inaccessible and unfilled canal and invagination areas because of complex internal morphology characterized by (i) C- or ring-shaped cross-sectional canal configuration with constrictions at different points in different root levels and (ii) a prominent intraradicular cavity that was communicated with the enamel-lined invagination and opened into the apical periodontium. Thus, it was judged that further endodontic treatment was not feasible. A 14-month follow-up revealed a satisfactory clinical and radiographic outcome, suggesting that the chemomechanical debridement may have sufficed to induce periapical healing. CBCT greatly helped the decision of avoiding further intervention that could have been difficult to negotiate.
authors.affiliation: Division of Cariology, Operative Dentistry and Endodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan. tomoendo@dent.niigata-u.ac.jp
authors.forename: Tomoatsu
authors.initials: T
authors.lastname: Kaneko
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Sakaue
authors.forename: Takashi
authors.initials: T
authors.lastname: Okiji
authors.forename: Hideaki
authors.initials: H
authors.lastname: Suda
mesh_terms: D019412:Anatomy, Cross-Sectional; D002126:Calcium Hydroxide / Q000627:therapeutic use; D002648:Child; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D003719:Dens in Dente / Q000000981:diagnostic imaging / Q000628:therapy*; D003751:Dental Fistula / Q000000981:diagnostic imaging / Q000628:therapy; D003786:Dental Pulp Cavity / Q000002:abnormalities / Q000000981:diagnostic imaging; D003790:Dental Pulp Necrosis / Q000000981:diagnostic imaging / Q000628:therapy; D003793:Dental Restoration, Permanent / Q000379:methods; D005500:Follow-Up Studies; D006171:Gutta-Percha / Q000627:therapeutic use; D006801:Humans; D007180:Incisor / Q000002:abnormalities* / Q000000981:diagnostic imaging; D008297:Male; D008437:Maxilla / Q000000981:diagnostic imaging; D008866:Microsurgery; D010485:Periapical Periodontitis / Q000000981:diagnostic imaging / Q000628:therapy; D016300:Radiography, Bitewing; D012387:Root Canal Filling Materials / Q000627:therapeutic use; D012389:Root Canal Obturation / Q000379:methods; D018915:Root Canal Preparation / Q000379:methods
chemical_list: D012387:Root Canal Filling Materials; D006171:Gutta-Percha; D002126:Calcium Hydroxide