摘要
目的 探讨采用口外J钩治疗安氏Ⅱ类 1分类错牙合患者的疗效。方法 对 15例安氏Ⅱ类 1分类需拔牙矫治患者 ,用标准方丝弓矫治技术 ,配合J钩口外牵引 ,关闭拔牙间隙 ,调整咬合关系 ,并对患者治疗前后X线头颅侧位片进行头影测量与分析。结果 口外J钩配合方丝弓矫治技术矫治安氏Ⅱ类 1分类错牙合可获得较理想的治疗效果。结论 口外J钩可有效地防止上颌支抗丧失 ;同时可减少因Ⅱ类颌间牵引而致上前牙伸长 ,达到改善外貌的作用。
Objective To investigate the effect of J hook towing on Angle class Ⅱ division 1 malocclusion. Methods 15 subjects with Angle class Ⅱ division 1 malocclusion were treated with J hook towing to close the gap left by extraction and adjust occlusion. X-ray cephalometrics was taken before treatment and after for analysis. Results It's suggested that satisfactory effect can be achieved by using J hook towing equipment on Angle class Ⅱ division 1 malocclusion. Conclusion J hook towing equipment can avoid upper jaw anchorage loss effectively and improve appearance by reducing the chance of upper anterior teeth stretch and mandible clockwise rotation caused by intermaxillary traction.
出处
《广东牙病防治》
2005年第1期22-24,共3页
Journal of Dental Prevention and Treatment