摘要
目的:探讨干燥条件下,被动自锁托槽系统与主动自锁托槽系统分别和不同弓丝组合时,在后牙段所产生的摩擦力差异。方法:在干燥条件下,分别测试2种被动自锁托槽系统(Damon3,3MSmartclip)、2种主动自锁托槽系统(Tomy,Time2)与3种弓丝(0.019×0.025英寸NiTi方丝、0.019×0.025英寸SS方丝、0.014英寸NiTi圆丝)组合在后牙段的动、静摩擦力。结果:0.019×0.025英寸NiTi方丝组中,被动自锁托槽与主动自锁托槽的摩擦力比较均有显著性差异,大小依次为Tomy>Time2>3MSmartClip>Damon3自锁托槽的摩擦力;0.019×0.025英寸方丝组中,Tomy自锁托槽的摩擦力最大,然后依次为Time2、3MSmartClip与Damon3自锁托槽(被动自锁托槽的摩擦力无显著性差异);0.014英寸NiTi圆丝组中,4种自锁托槽的摩擦力无明显差异(p>0.05)。同一自锁托槽系统时,0.019×0.025英寸NiTi方丝的摩擦力最大,其次为0.019×0.025英寸SS方丝、0.014英寸NiTi圆丝。结论:在0.019×0.025英寸SS弓丝-自锁托槽组合中,被动自锁托槽系统产生的摩擦力<主动自锁托槽系统(p<0.05);在0.014英寸SS弓丝-自锁托槽组合中,被动自锁托槽系统产生的摩擦力与主动自锁托槽系统的无明显差异(p>0.05)。
Objective： To study the frictional resistance in the buccal segment between 2 kinds of passive self-ligating brackets and 2 kinds of active self-ligating brackets coupled with 3 types of archwires in the dry state.Method： The static and kinetic friction of different combinations of 2 kinds of passive self-ligating brackets （Damon3, 3M SmartClip）and 2 kinds of active self-ligating brackets （Tomy,Time2） coupled with 3 types of archwires （0.019 ~0.025 inch nickel-titanium archwire, 0.019 × 0.025 inch stainless steel archwire, 0.014 inch nickel-titanium archwire） in the buccal segment were tested in the dry state. Result： There were significant differences of frictional resistance between passive seif-ligating brackets and active self-ligating brackets coupled with 0.019 ×0.025 inch rectangular archwire. Conclusion：When coupled with the 0.019 ×0.025 inch rectangular archwire,the passive self-ligating brackets produced lower frictional resistance than active self-ligating brackets.
出处
《临床口腔医学杂志》
2007年第7期403-405,共3页
Journal of Clinical Stomatology
关键词
自锁托槽
弓丝
摩擦力
self-ligating brackets： archwire： frictional resistance
