应用第三代稀土永磁体钕铁硼制成垫式活动矫治器对８例前牙骨性开患者进行畸形矫治。通过矫治前后的Ｘ线头影测量分析评价其疗效。结果表明：第三代稀土永磁体钕铁硼用于前牙骨性开畸形的矫治是可行的。磁力矫治后患者的上下磨牙的压入值、下颌平面角的减小值及前下面高的降低值均有显著变化 Application of the third generation of rare earth permanent magnet NdFeB made  pad-type active appliances on 8 cases of anterior bony open deformity correction. Before and after treatment by X-ray Cephalometric analysis to evaluate the efficacy. The results show that the third generation of rare earth permanent magnet NdFeB for the treatment of anterior open bilge deformity is feasible. After the magnetic treatment, the maxillary and mandibular molar values, the reduction of mandibular plane angle,