During root canal instrumentation, nickel-titanium rotary instruments are subjected to continual stresses inside the canal due to its anatomy and the hardness of the dentin they must cut. They must therefore be both stress-resistant and elastic. This study aimed to compare the mechanical behavior of two nickel-titanium rotary instruments (ProTaper and ProFile) by applying the finite element analysis method to produce a numerical evaluation. The nonlinear mechanical behavior of the alloy was taken into account during the study. The distribution of stresses due to torsional and bending moments was compared in the two experimental models. The ProFile model was found to be more elastic than the ProTaper model. Under equal loads, the ProTaper model showed lower and better distributed stresses than the ProFile model. Copyright © 2002 by The American Association of Endodontists.
Comparative analysis of torsional and bending stresses in two mathematical models of nickel-titanium rotary instruments: ProTaper versus ProFile / Berutti, E.; Chiandussi, G.; Gaviglio, I.; Ibba, A.. - In: JOURNAL OF ENDODONTICS. - ISSN 0099-2399. - STAMPA. - 29:1(2003), pp. 15-19. [10.1097/00004770-200301000-00005]
|Titolo:||Comparative analysis of torsional and bending stresses in two mathematical models of nickel-titanium rotary instruments: ProTaper versus ProFile|
|Data di pubblicazione:||2003|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1097/00004770-200301000-00005|
|Appare nelle tipologie:||1.1 Articolo in rivista|
File in questo prodotto: