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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。
Objective To summarize the cases of crowding out the first molars and to analyze the difficulties and points of correction, so as to provide reference for clinical work. Methods Twenty-two patients with orthodontic dentition crowds were admitted to Guanghua School of Stomatology of Sun Yat-sen University, including 8 males and 14 females, aged from 11.3 to 26.7 years (average 16.5 years). One to four first permanent molars were removed for correction. Among them, 4 first molars were removed in 5 cases, 3 first molars were removed, 4 first molars were removed, and 1 first molars were removed in 12 cases. Results The treatment time ranged from 14 to 25 months with an average of 18.5 months. The anterior commissure of the anterior teeth was covered and the coverage was normal. The occlusal relationship of the posterior teeth was good. All the dental arch spaces were closed and the facial features were coordinated. Conclusion The removal of the first molar denture crowding, should pay attention to strict indications and the corresponding correction techniques and methods in order to achieve good correction effect.