Avaliação de erros operatórios durante o preparo do canal radicular após o uso de instrumentos rotatórios de níquel-titânio realizados por estudantes e especialistas

• Ano de defesa: 2010
• Autor(a) principal: OLIVEIRA, Henrique Cesar Marcal 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: Níquel-titânio, preparo do canal radicular, instrumentos rotatórios, educação em odontologia, tomografia computadorizada de feixe cônico
• Palavras-chave em Inglês: Nickel-titanium root canal preparation, rotary instruments, dental education, cone beam computed tomography
• Área do conhecimento CNPq: CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA::CLINICA ODONTOLOGICA
• Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tde/1388

The aim of this study was to determine the errors of procedures that occurred during the preparation of curved root canals after the use of instruments níqueltitânio powered motor managed by specialists in endodontics and dental students. Forty upper and lower molars of humans were randomly divided into two groups of 20, according to traders: G1A-(Molars, specialists in endodontics), G1B-(lower molars, specialists in endodontics), G2A-(molars, dental students), G2B-(lower molars, dental students). The ProTaper Universal System was used to prepare all root canals. The AH PlusTM associated with gutta-percha was used with lateral condensation technique for obturation of all canals. Periapical radiography and cone beam computed tomography (TCFC) were obtained to verify procedural errors occurred during the preparation of root canals. Two examiners evaluated all images for determining the presence or absence of instrument fracture, root perforation (cervical, middle or apical) and deviation original path of the root canal (apical transport). The data were statistically analyzed employing the Chi-square test. The significance level was 5%. The rate of fractured instruments showed no significant differences in the level of experience of operators (p = 1.000). Root perforations and transport apical occurred more frequently in the group of students, without significant differences. While there have been some procedural errors during root canal preparation with experienced and inexperienced operators, the results suggest that the introduction of tools of nickel-titanium engine-driven education