Downing A, McCabe J, Gordon P
Department of Orthodontics, Glasgow Dental Hospital and School, U.K.
Br J Orthod. 1994 Nov;21(4):349-57. doi: 10.1179/bjo.21.4.349.
The differences in magnitude of static and kinetic frictional forces generated by 0.022 x 0.030-inch stainless steel (Dentaurum) and polycrystalline ceramic (Transcend) brackets in combination with archwires of different sizes (0.018 inch and 0.019 x 0.025 inch) and materials (stainless steel, nickel-titanium, and beta-titanium) at a constant ligature force were investigated. A friction-testing assembly using the Instron machine was used. In all cases, the static frictional force was greater than the kinetic frictional force. There were no significant differences in the frictional forces generated by stainless steel and polycrystalline ceramic brackets. Beta-titanium archwires produced greater frictional forces than the other two materials. Increasing the archwire diameter increased the frictional force.
研究了0.022×0.030英寸的不锈钢（登泰克）和多晶陶瓷（超越）托槽与不同尺寸（0.018英寸和0.019×0.025英寸）及材料（不锈钢、镍钛合金和β钛合金）的弓丝在恒定结扎力下产生的静摩擦力和动摩擦力大小的差异。使用了一台采用英斯特朗机器的摩擦测试装置。在所有情况下，静摩擦力均大于动摩擦力。不锈钢和多晶陶瓷托槽产生的摩擦力无显著差异。β钛合金弓丝产生的摩擦力比其他两种材料更大。增大弓丝直径会增加摩擦力。
