【摘要】 目的总结拔除第一磨牙矫治牙列拥挤的病例资料,分析矫治的难点和要点,为临床工作提供参考。方法本组病例为中山大学光华口腔医学院正畸科牙列拥挤患者22例,男性8例,女性14例,年龄11.3~26.7岁,平均16.5岁。拔除1~4颗第一恒磨牙进行矫治,其中拔除4颗第一磨牙5例,拔除3颗第一磨牙1例,拔除2颗第一磨牙4例,拔除1颗第一磨牙12例。结果患者矫治时间为14~25个月,平均18.5个月,矫治后患者前牙覆、覆盖正常,后牙咬合关系良好,牙弓间隙全部关闭,面部侧貌协调。结论拔除第一磨牙矫治牙列拥挤,应注重严格掌握适应证及相应的矫治技巧和方法,才能达到良好的矫治效果。更多还原

【Abstract】 Objective To evaluate the outcome of first molar extraction in patients with crowding.Methods Totally 22 patients(8 males and 14 females) from Clinic of Orthodontics, SUN Yat-sen University School of Stomatology with crowding were cellected. The patients were aged 11 years 3 months to 26 years 8 months(mean age 16 years 6 months). All of them treated with 1 to 4 first molar extractions.Results The average duration of orthodontic treatment was 18.5 months. Normal overjet and overbite was achieved. Good functional occlusion was established.Conclusions Patients with severe crowding could be successfully treated with first molar extraction.更多还原