BACKGROUND Orthodontic treatment with fixed appliances involves sliding of brackets along archwires. These movements involve friction, which causes resistance to sliding. In addition, moments cause teeth to tip until binding occurs between the bracket and archwire. The manufacturer of a new TiMolium®Titanium archwire claims material properties superior to β-Titanium, potentially leading to reduced resistance to sliding. OBJECTIVE To compare TiMolium archwires with β-Titanium and stainless steel archwires as the current gold standard for sliding mechanics under application of an increasing moment. MATERIALS AND METHODS A total of 120 stainless steel (Smartclip, 3M, Monrovia, CA) and ceramic self-ligating 0.022″-slot brackets (Clarity SL, 3M) were divided into six equal-sized groups. Resistance to sliding was tested with 0.019″ × 0.025″ TiMolium (TP Orthodontics, La Porte, IN), β-Titanium (3M), and stainless steel (3M) archwires using a custom-designed apparatus to simulate sliding mechanics and application of moments of 1000, 2000, and 3000 g-mm. RESULTS Using stainless steel brackets, the TiMolium archwires had significantly higher resistance to sliding than stainless steel archwires at all moments tested while there was no difference between TiMolium and β-Titanium. Using ceramic brackets, the resistance to sliding with TiMolium archwires was no different than with stainless steel archwires. Both TiMolium and stainless steel archwires showed significantly lower resistance to sliding than β-Titanium. CONCLUSION TiMolium archwires have resistance to sliding intermediary to stainless steel and β-Titanium archwires when clinically relevant moments are applied. Used with the stainless steel brackets, they behave like β-Titanium, whereas used with the ceramic brackets, they behave more like stainless steel.

中文翻译：

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正畸弓丝在施加力矩增加时的抗滑动性

背景技术使用固定矫治器的正畸治疗涉及支架沿弓丝的滑动。这些运动涉及摩擦，这会导致滑动阻力。此外，力矩会导致牙齿倾斜，直到托槽和弓丝之间发生结合。新型 TiMolium®Titanium 弓丝的制造商声称其材料性能优于 β-钛，可能会降低滑动阻力。目的比较 TiMolium 弓丝与 β-钛弓丝和不锈钢弓丝作为当前在增加力矩应用下滑动力学的黄金标准。材料和方法 将总共 120 个不锈钢（Smartclip，3M，Monrovia，CA）和陶瓷自锁式 0.022 英寸槽托槽（Clarity SL，3M）分成大小相等的六个组。用 0.019" × 0 测试抗滑动性。025″ TiMolium（TP Orthodontics, La Porte, IN）、β-钛 (3M) 和不锈钢 (3M) 弓丝，使用定制设计的设备模拟滑动力学和 1000、2000 和 3000 g 力矩的应用-毫米。结果 使用不锈钢支架，TiMolium 弓丝在所有测试时刻的抗滑动性明显高于不锈钢弓丝，而 TiMolium 和 β-钛之间没有差异。使用陶瓷托槽，TiMolium 弓丝的滑动阻力与不锈钢弓丝没有区别。TiMolium 和不锈钢弓丝的抗滑动性明显低于 β-钛。结论 在应用临床相关力矩时，TiMolium 弓丝对不锈钢和 β-钛弓丝具有抗滑动性。