目的:研究牙列拥挤患者经改良摆式矫治器与上唇挡联合治疗后的颅颌面结构的变化.方法:选取应用改良摆式矫治器与上唇挡联合应用治疗替牙晚期或恒牙初期重度牙列拥挤病例21例,测量矫治前后的头颅侧位定位片并进行配对t检验以评估疗效.结果:治疗后与治疗前比较:A点前移,SNA增加3.68°.上磨牙远中移动,U6-PTV减少2.96 mm.结论:改良摆式矫治器与上唇挡联合应用可以有效矫治重度牙列拥挤,远移磨牙、促进上颌前部发育、改善患者侧貌外形.%Objective: To evaluate the treatment effects of reformed pendulum and upper lip bumper therapy on crowed malocclusion in the beginning of permanent dentition. Method: 21patients with severe crowed malocclusion in the beginning of permanent dentition were treated with reformed pendulum and upper lip bumper, Cephalometric analysis was performed with pre-treatment and post-treatment cephalograms. Paired t-test conducted to assess the treatment effects. Result:Teech moving and alveolar rebuilding is the main change after the treatment by reformed pendulum and upper lip bumper. The improvement of overjet is achieved with foreward of A point, SNA increase 3.68° and the upper molar was distalized by 2.96 mm. Conclusion: severe crowed malocclusion in the beginning of permanent dentition can be treated successful by reformed pendulum and upper lip bumper.
展开▼
