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ENDO - Endodontic Practice Today

Edited by Bun San Chong and Edgar Schäfer

Official Publication of the Belgian Association for Endodontology and Traumatology (BAET) and the French Society of Endodontics (SFE)

ISSN (print) 1753-2809 • ISSN (online) 1753-2817


Summer 2012
Volume 6 , Issue 2

Pages: 113 - 117
Share Abstract:

Defects in ProFile rotary nickel-titanium files after clinical use

Ferreira, Manuel / Ferreira, Hugo / Oliveiros, Barbara / Carrilho, Eunice

Aim: The purpose of this study was to compare the incidence of deformation and instrument separation of rotary nickel-titanium instruments used clinically by the same operator according to a predefined schedule. Methodology: A total of 110 ProFile instruments (Dentsply Maillefer, Ballaigues, Switzerland), discarded from an endodontic clinic, were analyzed. Results: The incidences of instrument separation were 4.5% and for unwinding of the instruments 12.7% respectively. Flexural fatigue was implicated in the majority of separations. Conclusions: The results of this study indicated that ProFile instruments tended to exhibit unwinding of flutes more frequently than deformation and separation. Keywords: nickel-titanium (NiTi), ProFile, rotary root canal instruments, surface defects

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