In vitro evaluation of resistance to sliding in self-ligating and conventional bracket systems during dental alignment

• 발행기관: 대한치과교정학회
• 저자명: Giancarlo Cordasco Antonino Lo Giudice Angela Militi Riccardo Nucera Giuseppe Triolo Giovanni Matare
• 간행물 정보: 『The Korean Journal of Orthodontics』제42권 제4호, 218~224쪽, 전체 7쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 2012.08.31

영문 초록

Objective: To investigate the resistance to sliding (RS) in self-ligating and conventional ligation bracket systems at 5 different second-order bracket angulations by using low-stiffness alignment wires in a 3-bracket experimental model and to verify the performance of the main RS components in both systems when these wires are used. Methods: Interactive self-ligating brackets with closed and open slides were used for the self-ligating (SL) and conventional ligation (CL) groups, respectively; elastomeric ligatures (1 mm inner diameter) were used in the latter system. The alignment wire used was 0.014 inch heat-activated NiTi (austenitic finish temperature set at 36°C by the manufacturer). A custom-made testing machine was used to measure frictional resistance. Tests were repeated 5 times at every angulation simulated. All data were analyzed statistically. Results: The RS increased significantly with increasing angulation in both SL and CL groups (p < 0.0001). However, the RS values were significantly higher at every angulation (p < 0.0001) in the CL group. Conclusions: Despite the relevance of the binding phenomenon, ligation forces predominantly affect the RS when low-stiffness alignment wires are used. [Korean J Orthod 2012;42(4):218-224]

키워드

Bracket Wire