Comparison of the High Cycle Fatigue Behavior of the Orthodontic NiTi Wires: An in Vitro Study
Pesqui. bras. odontopediatria clín. integr
;
22: e210090, 2022. tab, graf
Article
in English
| LILACS, BBO
| ID: biblio-1386800
ABSTRACT
Abstract Objective:
To compare the high-cycle fatigue behavior of four commercially available NiTi orthodontic wires. Material andMethods:
Twelve NiTi orthodontic wires, round, 0.016-in, three per brand, were selected and divided into four groups G1 - Heat-activated NiTi, G2 - Superelastic NiTi, G3 - Therma-Ti, and G4 - CopperNiTi. The atomic absorption spectrometry method was used to determine the chemical composition of investigated NiTi wires. We also performed a fatigue test at three-point bending using a universal testing machine for 1000 cycles in a 35 °C water bath. For the first and thousandth cycle, the average plateau load and the plateau length were determined in the unloading area of the force versus displacement diagram. In addition, we calculated the difference between the average plateau load of the first and thousandth cycle (∆F), as well as the difference between the plateau length of both cases (∆L).Results:
According to our results, there were no significant differences between the average plateau load of the first and thousandth cycles of each group (p>0.05) and in the plateau length of the first and thousandth cycles of the groups (p>0.05).Conclusion:
There were no significant differences between the groups changing the superelasticity property after high-cycle fatigue.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Orthodontic Wires
/
Orthodontics
/
Stress, Mechanical
/
Dental Instruments
Language:
English
Journal:
Pesqui. bras. odontopediatria clín. integr
Journal subject:
Dentistry
Year:
2022
Type:
Article
Affiliation country:
Iran
Institution/Affiliation country:
Mashhad University of Medical Sciences/IR
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