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支抗设计是正畸治疗的难点,颌内支抗易导致支抗牙移动,而颌外支抗患者难以合作。骨支抗系统(skeletal anchorage system,SAS)是新近发展起来的用于进行牙齿移动的正畸治疗新方法。本研究系将L形或T形的钛—小夹板暂时植入基骨中作为固定源,以探讨对一些口内难以设计支抗的新途径。 作者介绍了SAS的发展概况,并且报道了两例在骨内暂时置入固定T形小夹板,使其一臂暴露于外,以作为支抗,矫治Ⅲ类错(牙合)成功的病例。虽然这两例患者的畸形状况均处于正畸治疗与正颌外科的分界线上,但是通过置入小夹板支抗都得到了成功的治疗,既没有进行正颌外科手术,也没有拔牙(第三磨牙除外)。传
Support design is the difficult point of orthodontic treatment. Maxillary internal fixation easily leads to the movement of the support tooth, while it is difficult for the patients with external malleolus to cooperate. Skeletal anchorage system (SAS) is a newly developed new method of orthodontic treatment for tooth movement. In this study, a L-shaped or T-shaped titanium-small splint was temporarily implanted into the base bone as a fixed source to explore a new approach to the difficult design of braces in the mouth. The authors present an overview of the development of SAS and reported the success of two cases of temporary malocclusion treated with a temporary T-shaped splint placed within the bone to expose one arm. Although both deformities were in the demarcation line between orthodontic treatment and orthognathic surgery, both patients were successfully treated by small splints with neither orthognathic surgery nor extraction Three molar except). pass