A study on the torque effect of orthodontic wires.
- Author:
Jeong Hyeon LIM
1
;
Sang Cheol KIM
Author Information
1. Department of Orthodontics, College of Dentistry, Wonkwang University, Korea.
- Publication Type:Original Article
- Keywords:
Torque Effects;
lnstron;
Optimal Force
- MeSH:
Orthodontic Wires*;
Stainless Steel;
Torque*
- From:Korean Journal of Orthodontics
1994;24(1):87-94
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of this study was to evaluate the torque effect of orthodontic wires. Ten types of orthodontic wires (five types of materials, two types of cross-sectional dimensions) were selected. Each group of wire type was constituted with five specimens. These specimens were tested on the universal testing machine(Instron) with specially-designed jig. The torque-twist curve of each wire was obtained and the results were analyzed statistically. The results were as follows: 1. 0.017" X 0.025" wire showed more torque effect than 0.016" X 0.022" wire at the same twist. 2. Torque effect was the greatest in stainless steel and the least in Nitinol. 3. The maximum amount of torque was the greatest in heat-treated Blue Elgiloy and the least in Nitinol.
