publication . Article . 2016

Fatigue resistance of rotary ProTaper Universal instruments after use with and without lateral pressure motion

Vieira, Evandro Pires; Pereira, Érika Sales Joviano; Peixoto, Isabella Faria da Cunha; Buono, Vicente Tadeu Lopes; Bahia, Maria Guiomar de Azevedo;
Open Access Portuguese
  • Published: 14 Jun 2016 Journal: Arquivos em Odontologia (issn: 2178-1990, eissn: 1516-0939, Copyright policy)
  • Publisher: Arquivos em Odontologia
Abstract
Aim: To evaluate the fatigue resistance of rotary ProTaper Universal instruments after multiple clinical uses with and without lateral pressure motion. Methods: Thirty sets of ProTaper Universal (PTU) instruments (Dentsply-Maillefer, Ballaigues, Switzerland), types S1, S2, F1 and F2, totaling 120 files, were analyzed and divided into three groups, as follows: Control Group (CG), with 10 sets of new instruments, which were fatigue tested until rupture to determine their fatigue resistance; Lateral pressure (LP), with 10 sets of instruments, each set used clinically in five mandibular and maxillary molars (15 to 20 canals) using shaping instruments with lateral pr...
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