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Quintessence Publishing: Journals: ENDO

 

ENDO - Endodontic Practice Today

Edited by Antionio Bonaccorso, Bun San Chong, Edgar Schafer, and Luc van der Sluis

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

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

Publication:

Summer 2012
Volume 6 , Issue 2



Pages: 113 - 117
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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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