在运用固定矫治器平整深覆患者过陡的下牙列Ｓｐｅｅ氏曲线阶段 ,Ｂｅｇｇ矫治技术中的双尖牙区及磨牙后倾弯、经典方丝弓技术中的摇椅弓形、上颌戴平面导板加后牙段垂直牵引、桥形弓和多用途弓等[1] 都可供选择。对于主要为下前牙萌出过度的严重深覆患者 ,目前正畸医师大 In patients with steep deep dentition in the deep overburden with fixed appliance, the Spee curve curve of the lower dentition, the bicuspid area in Begg's correction technique and the posterior teeth molars, the rocking chair bow in the classic square arch technique, the maxillary wearing flat guide Plus the vertical extraction of teeth, bridge bow and multi-purpose bow [1] are available. For patients with severe deep overburns, which are mainly eruptions of the lower anterior teeth, the current orthodontists are large