Mechanical Properties of ProTaper Gold, EdgeTaper Platinum, Flex Gold and Pro-T Rotary Systems
| Autor: | Emmanuel João Nogueira Leal Silva, Pablo Andres Amoroso Silva, Jussaro Alves Duque, Murilo Priori Alcalde, Marco Antonio Hungaro Duarte, Pedro Henrique Souza Calefi, Rodrigo Ricci Vivan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
torsional fatigue
Cyclic stress Dental Assisting Materials science Scanning electron microscope Angular rotation Torsion Mechanical chemistry.chemical_element Orthodontics Deflection (engineering) Nickel Materials Testing Dentistry (miscellaneous) Composite material General Dentistry Platinum Angle of rotation TITÂNIO Titanium nickel-titanium Torsional strength cyclic fatigue Bending force chemistry Bending resistance Dental Hygiene Periodontics Original Article Gold Oral Surgery Root Canal Preparation |
| Zdroj: | European Endodontic Journal Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 2548-0839 |
| Popis: | Objective: The aim of this study was to evaluate the cyclic fatigue, torsional behavior and bending resistance of EdgeTaper Platinum [ETP (tip 25, taper 0.06)], Flex Gold [FG (tip 25, taper 0.08)], Pro-T [PT (tip 25, taper 0.08)] and ProTaper Gold [PTG (tip 25, taper 0.08)] systems. Methods: Rotary instruments of ETP, PT, FG, and PTG were used (n=30). Cyclic fatigue tests were performed using an artificial stainless-steel canal with a 60o angle and a 5-mm radius of curvature at body temperature (35°±1°C). The time and number of cycles to fracture (NCF) was recorded. The torsional test evaluated the torque and angle of rotation to failure at 3 mm from the tip according to ISO 3630-1. The fractured surface of each fragment was observed by using scanning electron microscopy (SEM). The bending test evaluated the torque required to bend the instruments at an angular deflection of 60°. Data were analyzed using one-way ANOVA and Tukey tests, and the level of significance was set at 5%. Results: The ETP had highest time until fracture and NCF than all the groups (P |
| Databáze: | OpenAIRE |
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