title: Endodontic Treatment of Maxillary Premolar with Three Root Canals Using Optical Microscope and NiTi Rotatory Files System.
abstract: The aim of the study was to report a clinical case of endodontic treatment of a maxillary first premolar with three root canals using an optical microscope and rotary instrumentation technique. The main complaint of the patient, a 16-year-old girl, was pain in tooth 14. After clinical and radiographic examination, irreversible pulpitis was diagnosed. An alteration in the middle third of the pulp chamber radiographically observed suggested the presence of three root canals. Pulp chamber access and initial catheterization using size number 10 K-files were performed. The optical microscope and radiographic examination were used to confirm the presence of three root canals. PathFiles #13, #16, and #19 were used to perform catheterization and ProTaper files S1 and S2 for cervical preparation. Apical preparation was performed using F1 file in the buccal canals and F2 in the palatal canal up to the working length. The root canals were filled with Endofill sealer by thermal compaction technique using McSpadden #50. The case has been receiving follow-up for 12 months and no painful symptomatology or periapical lesions have been found. The use of technological tools was able to assist the endodontic treatment of teeth with complex internal anatomy, such as three-canal premolars.
authors.affiliation: Department of Endodontics, School of Dentistry, Federal University of Amazonas, 69077-000 Manaus, AM, Brazil.
authors.forename: João Bosco Formiga
authors.initials: JB
authors.lastname: Relvas
authors.affiliation: Department of Endodontics, School of Dentistry, Paulista University, 69050-010 Manaus, AM, Brazil.
authors.forename: Fredsom Marcio Acris
authors.initials: FM
authors.lastname: de Carvalho
authors.affiliation: Department of Endodontics, School of Dentistry, State University of Amazonas, 69050-030 Manaus, AM, Brazil.
authors.forename: André Augusto Franco
authors.initials: AA
authors.lastname: Marques
authors.affiliation: Department of Endodontics, School of Dentistry, Federal University of Amazonas, 69077-000 Manaus, AM, Brazil.
authors.forename: Emílio Carlos
authors.initials: EC
authors.lastname: Sponchiado
authors.affiliation: Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of São Paulo, 14040-900 Ribeirão Preto, SP, Brazil.
authors.forename: Lucas da Fonseca Roberti
authors.initials: Lda F
authors.lastname: Garcia