교정용 선재의 TORQUE 효과에 관한 연구
A STUDY ON THE TORQUE EFFECT OF ORTHODONTIC WIRES
- 임정현(Jeong-Hyeon Lim) 김상철(Sang-Cheol Kim)
- The Korean Journal of Orthodontics
- 제24권 제1호
- 등재여부 : KCI등재
- 87 - 94 (8 pages)
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.