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Comparison of three instrumentation techniques in the preparation of simulated curved root canals.
Zmener, O; Banegas, G.
Afiliação
  • Zmener O; Department of Adult Dental Care, Faculty of Odontology, University of Buenos Aires, Argentina.
Int Endod J ; 29(5): 315-9, 1996 Sep.
Article em En | MEDLINE | ID: mdl-9206414
Forty-five acrylic blocks with simulated curved canals were divided into three groups of 15 blocks each. In group 1 the canals were instrumented with ultrasonically energized K-files (UEF) using a piezoelectric ultrasonic device. In group 2 the canals were prepared with ProFile 0.04 Taper Series 29 Rotary Instruments (PRI) in conjunction with a low-speed high torque handpiece. In group 3 (control) the canals were hand instrumented (HI) with conventional K-type files using a standard push-pull circumferential technique. The efficiency of these techniques for preparing the simulated canals were compared by measuring the amount of transportation of the prepared canals at different levels from the working length using a double exposure photographic technique. A statistical analysis was used to indicate any significant difference among groups. The results showed that the use of PRI provided well-centred and more tapered preparations. Conversely, the use of UEF and HI resulted in frequent alteration of the original curvature, showing transportation at different levels from the working length.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Preparo de Canal Radicular Tipo de estudo: Diagnostic_studies / Evaluation_studies Idioma: En Revista: Int Endod J Ano de publicação: 1996 Tipo de documento: Article País de afiliação: Argentina País de publicação: Reino Unido
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Preparo de Canal Radicular Tipo de estudo: Diagnostic_studies / Evaluation_studies Idioma: En Revista: Int Endod J Ano de publicação: 1996 Tipo de documento: Article País de afiliação: Argentina País de publicação: Reino Unido