目的:介绍一种下颌第二磨牙近中平移技术。方法:26例涉及关闭下颌第一磨牙间隙病例,男8例,女18例,年龄11~36岁,平均16.4岁。应用第二磨牙近中平移技术关闭第一磨牙拔牙间隙。结果:26例矫治时间10~23个月,平均16个月。磨牙间隙完全关闭,后牙咬合关系良好,前牙正常覆牙合覆盖关系,面部侧貌协调。结论:下颌磨牙近中平移技术能高效、安全地关闭第一磨牙拔牙间隙;灵活选择支抗系统,可以对各种问题磨牙及磨牙问题进行针对性矫治并获得良好的矫治效果。 Objective: To introduce a kind of mandibular second molar near-mid-translation technique. Methods: Twenty - six cases involving the closing of the first mandibular first molar gap were 8 males and 18 females, aged from 11 to 36 years (mean, 16.4 years). Application of the second molar near-center translation technique to close the first molar extraction space. Results: 26 cases of correction time of 10 to 23 months, an average of 16 months. Molar clearance is completely closed, good occlusion of the posterior teeth, normal occlusion of the anterior teeth, facial coordination. Conclusion: The mandibular molar near-center translation technique can effectively and safely close the extraction gap of the first molar. The flexible choice of the support system can be used for targeted correction of all kinds of molar and molar problems and obtain good correction effect.