咬合力对托槽与弓丝间摩擦力影响的有限元分析

A STUDY ON THE FRICTION BETWEEN ORTHODONTIC BRACKETS AND ARCH WIRES UNDER SIMULATED MASTICATORY CONTACTS USING FINITE ELEMENT METHOD

目的 :研究咬合力对托槽与弓丝间摩擦力影响。方法 :应用有限元分析的方法 ,对咬合力对摩擦力的影响进行了模拟研究。研究不同大小的咬合力作用下 ,尖牙远中移动过程中 ,弓丝与托槽之间摩擦力的变化。结果 :在咬合力的作用下 ,弓丝与托槽基底间的摩擦力随着咬合力的增加而减少 ;弓丝与托槽翼间的摩擦力随着咬合力的增加而增大。结论

Objective:To study the friction between orthodontic bracket and wire influenced by the masticatory contacts.Methods:The friction between orthodontic brackets and arch wires under simulated masticatory contacts was studied using the finite element method.Results:The frictional forces between arch wires and bracket bases decreased significantly under masticatory contacts,while the frictional forces between arch wires and bracket wings increased.Conclusion:The total frictional forces between orthodontic brackets and arch wires increased under masticatory contacts.