치아의 활주이동시 교정용 brakets와 arch wire사이에서 발생하는 마찰 저항력에 관한 비교 연구

• 영문명: A comparative study of frictional resistances between orthodontic brackets and arch wire during sliding movement of teeth
• 발행기관: 대한치과교정학회
• 저자명: 민정미(Jung-Mi Min) 서정훈(Cheong-Hoon Suhr)
• 간행물 정보: 『The Korean Journal of Orthodontics』제18권 제1호, 155~163쪽, 전체 9쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 1988.06.30

영문 초록

The purpose of this study was to evaluate and compare frictional forces generated between orthodontic brackets and arch wires. Independent variables were chosen for study: arch wire size and shape, arch wire material, bracket width, and second-order angulation between bracket and arch wire. Kinetic frictional forces of stainless steel (0.014″, 0.016″, 0.018″, 0.016″ x 0.022″, 0.018″ x 0.022″), β-titanium (0.016″ x 0.022″) arch wires were measured on wide and junior edgewise twin brackets (0.018″ x 0.022″ slot). Instron was used to pull arch wires while 0°, 3°, 6, or 9° angulation between and wire and bracket was given. The results were as follows: 1. The frictional force of β-titanium wire was larger than that of stainless steel wire. 2. The frictional force was generally increased as the size of wire is increased. 3. The frictional force of rectangular wire was larger than that of round wire. 4. As second order angulation was increased, the frictional force was also increased. 5. The frictional force was larger on a wide bracket than on a junior bracket.