无托槽隐形矫治技术对成人安氏Ⅰ类轻中度牙列拥挤的临床应用

Clinical application of bracketless and invisible orthodontic system for adult Angle I cases with mild to moderate crowding

目的:采用无托槽隐形矫治技术,治疗成人安氏Ⅰ类轻中度牙列拥挤,检验其疗效。方法:选择使用无托槽隐形矫治器的安氏I类轻中度牙列拥挤的成人患者31例。设计为牙弓扩展、个别牙邻面去釉或拔除一颗下切牙。通过配戴无托槽隐形矫治器,每2周患者自行更换下一副矫治器,4～6周来院复诊1次。结果:31例患者均实现了牙齿排列整齐、无间隙,上下中线正(拔除1颗下切牙的除外),覆、覆盖关系正常,双侧磨牙中性关系不变。矫治时间8～14个月。结论:无托槽隐形矫治技术可以矫治成人安氏I类轻中度牙列拥挤,疗效确定。

Objective To examine the efficacy of bracketless and invisible orthodontic system in treating adult patients of Angle class I with mild to moderate crowding. Methods The sample included 31 adult patients of Angle Class I malocclusion with mild to moderate crowding.All the patients were treated with bracketless and invisible appliances,for whom some additional measures such as arch expansion,IPR or single lower incisor extraction were designed respectively.During the treatment, patients were instructed to change aligners sequentially every two weeks and visit the doctor every 4-6 weeks. Results All the 31 patients completed orthodontic treatment with satisfying outcomes, presenting straight teeth, closed space,correct midline （except the cases with single lower incisor extraction）, normal overbite and overjet and maintained neutral molar relationship.The treatment span was 8-14 months. Conclusion The bracketless and invisible orthodontic system has affirmative efficacy for adult patients of Angle class I malocclusion with mild to moderate crowding.