Comparação do comprimento de trabalho do canal radicular usando tomografia computadorizada de feixe cônico, radiografia periapical e localizador apical eletrônico

• Ano de defesa: 2012
• Autor(a) principal: MORAIS, André Luiz Gomide de
• Orientador(a): ESTRELA, Carlos
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Goiás
• Programa de Pós-Graduação: Mestrado em Odontologia
• Departamento: Ciência da Saúde
• País: BR
• Palavras-chave em Português: Odontometria; Tomografia computadorizada de feixe cônico; Radiografia dentária; Ápice dentário; Localizador apical eletrônico; Limite apical; T. comput de feixe cônico; R. dentár; Loc apical eletrôn; Odontometria
• Palavras-chave em Inglês: Odontometry; Cone beam computed tomography; Dental radiography; Tooth apex; Electronic apex locator; Apical limit
• Área do conhecimento CNPq: CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA
• Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tde/1376

Introduction Strategies to obtain the working length to prepare and fill the root canals has been relevant theme of discussion in endodontics. The purpose of this study was to compare in vivo the canal root working length measures determined by cone beam computed tomography (CBCT) images with the ones obtained by using periapical radiograph and electronic apex locator. Methods The root canal working lengths of 30 single-rooted teeth from 19 patients whose diagnosis was apical periodontitis were evaluated. Initial periapical radiographs for diagnosis and treatment planning, employing the parallelism technique, were taken. CBCT images were acquired with i-CAT system (aiming of diagnosing the cases of apical periodontitis that showed to be complex and doubtful) and measured with specific function of i-CAT software. The coronal opening was made, the root canals were irrigated with sodium hypochlorite solution 2.5%, being performed the exploration and initial emptying of root canal. After, the preparation of the inlet orifice and of the cervical root third was carried out . The minor foramen was located using Root ZX® locator by advancing a stainless steel K-file that best suited the root canal, according to the manufacturer´s instructions. The radiographic measurement was made by advancing a stainless steel K-file in the root canal, until its tip was 1.0 mm from the root apex (determined from the measures obtained by the electronic ape locator). These 3 working length were tabulated and compared. Kruskal-Wallis test was used to analyze the differences between working lengths methods. The significance was set at α=5%. Results The mean values and standard deviations for working length determination by electronic apex locator, periapical radiograph and CBCT images were 21.5 ± 3.1, 21.32 ± 3, 21.4 ± 2.7, respectively. Significant differences were not verified statistically (P>0.05). Conclusions CBCT images working length determination showed to be as similar as the determinations obtained by using periapical radiograph and electronic apex locator.