SciELO - Scientific Electronic Library Online

vol.12 número4Endodontic cements - immediate apical sealing and after a six-month storageFluoride releasing of restorative materials índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados




Links relacionados


Revista de Odontologia da Universidade de São Paulo

versión impresa ISSN 0103-0663


LAMARAO, Suely Maria Santos; SANTOS, Marcelo dos  y  ANTONIAZZI, João Humberto. Effects of pre-curved and straight files on the curvature angle of simulated root canals. Rev Odontol Univ São Paulo [online]. 1998, vol.12, n.4, pp.361-365. ISSN 0103-0663.

Chemical-surgical preparation (C.S.P.) is responsible for shaping and cleaning the root canal, being these the main requirements for a correct filling procedure. Therefore, this study attempted to evaluate the change of curvature angle of simulated root canals after chemical-surgical preparation. These root canals were made in blocks of epoxy resin with curvatures of 35 degrees, and instrumented according to the serial technique of Paiva and Antoniazzi, using type-K files, Flexofile files (pre-curved and straight) and Nitiflex files. The results showed that the smallest alteration in curvature was caused by the pre-curved Flexofile files, followed by Nitiflex files and pre-curved type-K files. The root canals instrumented with straight type-K and Flexofile files showed the largest deformation in curvature. The pre-curvature of the files affects the deformation of the root canals, presenting statistically significant differences between the results obtained with straight and pre-curved Flexofile and type-K files.

Palabras clave : Dental instruments; Endodontics; Dental pulp cavity.

        · resumen en Portugués     · texto en Portugués


Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons