摘要
目的测量不同组合的双丝弓在不同自锁托槽中静摩擦力和动摩擦力的大小.方法于标准模型上分别粘贴右上象限的Damon Q自锁托槽记为A组、3M Smart clip自锁托槽记为B组、非凡Quick 3.0自锁托槽记为C组作为实验对象,采用0.012英寸与0.016英寸超弹镍钛圆丝组合和0.014英寸与0.014英寸的超弹镍钛圆丝组合,模拟弓丝在托槽内的滑动,测量托槽与弓丝间摩擦力的变化,从而探讨不同组合的双丝弓在不同自锁托槽中摩擦力大小的差异.结果使用0.014与0.014英寸超弹镍钛圆丝组合,静摩擦力大小为A组<B组<C组,差异有统计学意义(P<0.05);动摩擦力大小为A组<B组<C组,差异有统计学意义(P<0.05);当使用0.012与0.016英寸超弹镍钛圆丝组合,静摩擦力大小为A组<B组<C组,差异有统计学意义(P<0.05);动摩擦力大小为A组<B组<C组,差异有统计学意义(P<0.05).结论不同自锁托槽摩擦力大小有差异,弓丝组合对摩擦力大小有影响,无论静摩擦力还是动摩擦力,0.012与0.016英寸超弹镍钛圆丝组合应用于Damon Q自锁托槽时最小,0.014与0.014英寸超弹镍钛圆丝组合应用于非凡Quick 3.0自锁托槽时最大.0.012与0.016英寸超弹镍钛圆丝组合应用于Damon Q自锁托槽时牙齿有最快的移动速度,更有利于后续治疗中粗弓丝的入槽.
Objective To measure the dynamic and static frictional resistances between different self-ligating orthodontic brackets and different combination of tandem archwires. Methods On standard model the upper right quadrant Damon Q self-ligating brackets was pasted as team A, 3M Smart clip self-ligating brackets as team B and Forestadent Quick 3.0 self-ligating brackets as team C respectively. Nickel-titanium archwires of 0.012 inch and 0.016 inch and two nickel-titanium archwires of 0.014 inch were applied to simulate sliding in the brackets and measure the friction changes in brackets and archwires, so as to explore the frictional resistance between different combination of the tandem archwires and different self-ligating brackets. Results When using the combination of two O.O14-inch nickel-titanium tandem archwires, the static frictional resistances was significantly different （P〈 0.05） ： team A〈team B 〈team C while the kinetic frictional resistance was also significantly different （P〈0.05） ： team A 〈team B 〈team C, When using the combination of 0.O12-inch and 0.016-inch nickel-titanium tandem archwires, the static frictional resistances was significantly different （P〈0.05） ： team A〈team B〈team C, while the kinetic frictional resistance was also significantly different （P〈O.05） ：team A〈team B〈team C. Conclusion There are different frictional resistance in different kind of self-ligating brackets and different combination of thetandem archwires. The combination of two 0.014-inch nickel-titanium tandem archwire applied to Forestadent Quick 3.0 self-ligating brackets has the biggest frictional resistance while the combination of 0.012-inch and 0.016-inch nickel-titanium tandem archwire applied to the Damon Q self-ligating brackets has the lowest frictional resistance, which enables the teeth to move at the fastest speed and facilitates the following use of the edgewires
作者
陈明珠
沈绍莹
尹康
韦斌霜
郭杨
CHEN Ming-zhu SHEN Shao-ying YIN Kang WEI Bin-shuang GUO Yang(Dept. of Orthodontics, Stomatological Hospital Affiliated to Kunming Medical University, Kunming Yunnan 650031, China)
出处
《昆明医科大学学报》
CAS
2016年第11期93-96,共4页
Journal of Kunming Medical University
基金
云南省医疗卫生单位内设研究机构基金资助项目(2014NS292)
关键词
双丝弓
摩擦力
自锁托槽
Tandem archwire
Frictional resistance
Self-ligating Brackets
