Análise da eficácia do instrumento RECIPROC #25 em atingir o forame apical sem glide path

• Ano de defesa: 2012
• Autor(a) principal: Cavalcante, Thiane Elys Prado Arruda
• Orientador(a): Vianna, Gustavo André de Deus Carneiro
• Banca de defesa: Fidel, Sandra Rivera , Alves, Flávio Rodrigues Ferreira , Cardoso, Rielson José Alves
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade do Estado do Rio de Janeiro
• Programa de Pós-Graduação: Programa de Pós-Graduação em Odontologia
• Departamento: Centro Biomédico::Faculdade de Odontologia
• País: BR
• Palavras-chave em Português: Movimento recíproco; Endodontia; Instrumentação; Glide path; Instrumentos e aparelhos odontológicos; Ápice dentário
• Palavras-chave em Inglês: Reciprocating motion; Endodontic; Instrumentation; Glide path
• Área do conhecimento CNPq: CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA::ENDODONTIA
• Link de acesso: http://www.bdtd.uerj.br/handle/1/14137

The aim of the present studywas to evaluate the effectiveness of the Reciproc® #25 instrument in reaching the apical foramen of mandibular molars root canals without any manual glide path. For this, a general sample of 300 mandibular molars was radiographed and graded accordantly the degree of curvature (Schneider s criteria) classes I and II. After applying the inclusion and exclusion criteria, a total of 502 root canals were included to form the two experimental groups: 253 canals in the class Igroupand 249 in the class II group. All canals were instrumented directly with R25 file, without any manual glide path, carefully following the manufacture s guidelines. The pooled results of two experimental groups showed that the R25 instrument was able to reach the apical foramen without glide path in 93.4% of the cases. In 6.4%, the instrument R25 was unable to reach the apical foramen and in only 0.2% of the cases occurredinstrument fracture (one fracture in the class I group andnone in the class II group). The chi-square test was accomplished to verify that a certain class of channels is more associated with or without the need for glide path when the Reciproc® system is used. . In the group of class II molar higher number of channels (23) that the instrument was not able to go to the apical foramen than in the molar class I (9), and this difference was statistically significant (Chi-square test, p = 0.020, X2 = 5.452) Within the experimental conditions of this study, it can be concluded that the file R 25 showed to be a highly effective instrument in the instrumentation of the entire length of the canals of mandibular molars class I and II without prior glide path. In addition, the instrumentation system was shown to be highly safe in the rate of fracture.