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- Title
Cyclic Fatigue Resistance of Blue Heat-Treated Instruments at Different Temperatures.
- Authors
Vieira, Thalita Miranda; Cardoso, Ryhan Menezes; Alves, Nayane Chagas Carvalho; Emanuel Acioly Conrado de Menezes, Silvio; Batista, Shirley Machado; Silva, Silmara de Andrade; Velozo, Christianne; Albuquerque, Diana Santana de; Monteiro, Gabriela Queiroz de Melo
- Abstract
The main aim is to evaluate the cyclic fatigue resistance of blue heat-treated instruments with different kinematics. Twenty-four endodontic instruments of the same brand were used for each of three experimental groups: VB (Vortex Blue 40/0.04), RB (RECIPROC Blue 40/0.06), and XB (X1 Blue 40/0.06). The instruments were randomly distributed and subjected to temperatures of 20°C and 37°C. The fatigue test was performed using a stainless steel device. Data were analysed using the Shapiro–Wilk test, Student's t-test, the F test, and Tukey's and Tamhane tests at significance level P = 0.05. The instruments' cyclic fatigue resistance at both temperatures differed significantly for each instrument type (P < 0.001). The RB instruments displayed greater cyclic fatigue resistance at the tested temperatures compared with the VB and XB instruments (P < 0.001). Reciprocating kinematics positively influenced cyclic fatigue resistance. Blue heat-treated instruments showed decreased cyclic fatigue resistance as the temperature increased (P < 0.001).
- Subjects
CYCLIC fatigue; TEMPERATURE measuring instruments; TUKEY'S test; BLUE; STAINLESS steel; STATISTICAL hypothesis testing; FATIGUE testing machines
- Publication
International Journal of Biomaterials, 2021, p1
- ISSN
1687-8787
- Publication type
Article
- DOI
10.1155/2021/5584766