正畸治疗过程中影响转矩的因素

Review on the factors affecting torque expression in orthodontic treatment

正畸治疗后牙齿的转矩关系到患者牙齿的美观、稳定和咬合,各种矫治技术中影响转矩控制的因素一直是临床医生讨论的重点。良好的转矩控制能使牙齿获得正常的唇舌向倾斜和良好的曲线。临床上,正畸治疗的牙齿转矩角度受多种因素的影响,如牙冠唇面形态、冠根角、轴倾角和临床冠中心高度等。另外,托槽的预设角度、粘接高度和弓丝的材质等也会对其产生一定的影响。本文将从患者本身的解剖因素、托槽和弓丝特性3个方面对正畸矫治过程中影响转矩的因素作一综述。

Proper buccolingual inclination of teeth is essential to esthetics,stability and occlusion in orthodontic treatment.Factors influencing torque in various orthodontic treatments are frequently discussed by clinical orthodontists.Good control of torque can get the normal buccolingual inclination and beautiful curve of the teeth.Clinically,there are many factors affecting the tooth torque control,such as labial surface shape of crown,root-tooth angle,tip and the center height of clinical crown.Besides,preset angle of brackets,adhesive height,texture of the arch wires,and so on,also have effects.In this paper,we will give a comprehensive review on the factors affecting torque expression in three aspects：Anatomical factors of the tooth,brackets and the properties of the archwire,respectively.