使用隐形矫治器矫治替牙期反

目的:12例替牙期反病例,观察利用隐形矫治器加口内Ⅲ类牵引矫治替牙期功能性反的疗效。方法:选择利用隐形矫治器加下颌尖牙区和上颌第一磨牙区牵引钩,在口内进行颌间Ⅲ类牵引,矫治力大小根据病人的耐受力进行调整,约250～500 g。结果:12例病人均在5个月内完成矫治。矫治后前牙达到正常咬合,第一磨牙中性或基本中性关系。结论:带牵引钩的隐形矫治器颌间牵引,可有效矫治替牙期功能性反。是替牙期功能性反早期矫治的有效手段。

Preliminary study on the treatment of anterior crossbite in the mixed dentition with invisible appliance

AIM: To investigate the effects of invisible appliance combined with intraoral class Ⅲ intermaxillary traction on the treatment of anterior cross bite.METHODS: Twelve patients with anterior cross bite were enrolled in this study.Hooks were added at lower canine area and upper first molar area.Invisible appliance was used with elastic traction between upper and lower hooks,with a traction force of 200 g to 500 g.RESULTS: All the 12 patients with anterior cross bite were treated effectively in 5 months.Anterior cross bite was corrected perfectly and first molars were adjusted to neutral occlusion relationship.CONCLUSION: Functional anterior crossbite can be treated effectively by using the invisible appliance with class Ⅲ intermaxillary traction.It is an efficient method for anterior cross bite in the mixed dentition.