Franchi Lorenzo, Baccetti Tiziano, Camporesi Matteo, Barbato Ersilia
Department of Orthodontics, University of Florence, Florence, Italy.
Am J Orthod Dentofacial Orthop. 2008 Jan;133(1):87-90. doi: 10.1016/j.ajodo.2007.08.011.
The aim of this study was to evaluate the frictional forces generated by 4 types of passive stainless steel self-ligating brackets (SLBs) and by nonconventional elastomeric ligatures (NCEL) and conventional elastomeric ligatures (CEL) during sliding mechanics.
An experimental model consisting of 5 aligned stainless steel 0.022-in brackets was used to assess frictional forces produced by the SLBs, NCEL, and CEL with a 0.019 x 0.025-in stainless steel wire.
Significantly smaller static and kinetic forces were generated by the SLBs and NCEL (<2 g) compared with the CEL (>500 g). No significant differences were found within the different types of SLBs, or between these and the NCEL.
SLBs and NCEL are valid alternatives for low friction during sliding mechanics.
本研究的目的是评估4种类型的被动不锈钢自锁托槽（SLB）以及非常规弹性结扎丝（NCEL）和传统弹性结扎丝（CEL）在滑动机制过程中产生的摩擦力。
使用一个由5个对齐的0.022英寸不锈钢托槽组成的实验模型，来评估SLB、NCEL和CEL使用0.019×0.025英寸不锈钢丝时产生的摩擦力。
与CEL（>500克）相比，SLB和NCEL产生的静摩擦力和动摩擦力明显更小（<2克）。在不同类型的SLB之间，以及SLB与NCEL之间未发现显著差异。
SLB和NCEL是滑动机制过程中实现低摩擦的有效替代方案。
