시간경과에 따른 교정용 braket과 교정선 사이의 마찰력 변화에 관한 연구

• 영문명: A study on the changes of frictional force between bracket and orthodontic wire with time in artificial saliva
• 발행기관: 대한치과교정학회
• 저자명: 곽춘(Chun Kwak) 김진범(Jin-Bom Kim) 손우성(Woo-Sung Son)
• 간행물 정보: 『The Korean Journal of Orthodontics』제23권 제2호, 283~294쪽, 전체 12쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 1993.06.30

영문 초록

The friction of orthodontic appliances is recognized to be detrimental to tooth movement. The purpose of this study was to determine the magnitude of frictional force changes between bracket(018″X025″ solt) and orthodontic wires(stainless steel, cobalt-chromium. and β-titanium, 017″X0.25″ rectangular) with time. The wire was secured in the bracket slot with a elastomeric ligature. Frictional forces were measured by universal testing machine. The following conclusions were obtained. 1. The frictional forces under dry condition were greater than those in saliva. 2. The frictional forces produced by cobalt-chromium wire were less than those generated by stainless steel and β-titanium wire. 3. The frictional forces increased progressively with time, and the amount of increase on first two weeks was greater than on last two weeks. 4. The change of frictional force under dry condition was greater than in artificial saliva.

키워드

frictional force orthodontic bracket and wire