Friction between various self-ligating brackets and archwire couples during sliding mechanics
Friction between various self-ligating brackets and archwire couples during sliding mechanics
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DOI：
10.1016/j.ajodo.2008.11.029
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发表时间：
2010-10-01
影响因子：
3
通讯作者：
Mante, Francis K.
中科院分区：
文献类型：
--
作者：
Stefanos, Sennay;Secchi, Antonino G.;Mante, Francis K.
简介：本研究的目的是通过使用正畸滑动模拟装置来评估主动和被动自锁托槽与0.019 × 0.025英寸不锈钢弓丝之间在滑动力学过程中的摩擦阻力。研究方法：使用了上颌右第一前磨牙主动自锁托槽In-Ovation R、In-Ovation C（均为GAC International，Bohemia，NY）和SPEED（Strite Industries，剑桥，安大略，加拿大），以及被动自锁托槽SmartClip（3 M Unitek，蒙罗维亚，加利福尼亚）、Synergy R（Rocky Mountain Orthodontics，Denver，科洛）和Damon 3 mx（Ormco，橙子，加利福尼亚）（具有0.022英寸槽）。使用正畸滑动模拟装置连接到万能试验机上测量正畸力。每种托槽-弓丝组合在相对于滑动方向成0度角时进行30次测试。采用单因素方差分析（ANOVA）进行统计学比较，然后进行Dunn多重比较。统计学显著性水平设定为P < 0.05。结果：Damon 3 mx托槽的平均静摩擦力最低（8.6g），差异有统计学意义。SPEED支架的平均静摩擦力最高（83.1 g）。其他支架的排名如下，从高到低依次为In-Ovation R、In-Ovation C、SmartClip和Synergy R。平均静摩擦力均具有统计学差异。托槽-弓丝组合的动摩擦力的排序与静摩擦力的排序相同。除SmartClip和In-Ovation C外，所有托槽-弓丝组合均显示出显著不同的动摩擦力，这两种组合之间没有显著差异。结论：被动自锁托槽的静摩擦阻力和动摩擦阻力低于采用0.019 x 0.025英寸不锈钢丝的主动自锁托槽。(Am J Orthod Dentofacial Orthop 2010;138：463-7）
Introduction: The aim of this study was to evaluate the frictional resistance between active and passive self-ligating brackets and 0.019 x 0.025-in stainless steel archwire during sliding mechanics by using an orthodontic sliding simulation device. Methods: Maxillary right first premolar active self-ligating brackets In-Ovation R, In-Ovation C (both, GAC International, Bohemia, NY), and SPEED (Strite Industries, Cambridge, Ontario, Canada), and passive self-ligating brackets SmartClip (3M Unitek, Monrovia, Calif), Synergy R (Rocky Mountain Orthodontics, Denver, Colo), and Damon 3mx (Ormco, Orange, Calif) with 0.022-in slots were used. Frictional force was measured by using an orthodontic sliding simulation device attached to a universal testing machine. Each bracket-archwire combination was tested 30 times at 0 degrees angulation relative to the sliding direction. Statistical comparisons were performed with 1-way analysis of variance (ANOVA) followed by Dunn multiple comparisons. The level of statistical significance was set at P < 0.05. Results: The Damon 3mx brackets had significantly the lowest mean static frictional force (8.6 g). The highest mean static frictional force was shown by the SPEED brackets (83.1 g). The other brackets were ranked as follows, from highest to lowest, In-Ovation R, In-Ovation C, SmartClip, and Synergy R. The mean static frictional forces were all statistically different. The ranking of the kinetic frictional forces of bracket-archwire combinations was the same as that for static frictional forces. All bracket-archwire combinations showed significantly different kinetic frictional forces except SmartClip and In-Ovation C, which were not significantly different from each other. Conclusions: Passive self-ligating brackets have lower static and kinetic frictional resistance than do active self-ligating brackets with 0.019 x 0.025-in stainless steel wire. (Am J Orthod Dentofacial Orthop 2010;138:463-7)