【摘要】 下颌前突为一种常见的颌骨发育畸形。为了使患者重获正常的功能和外形,术前x线头影测量不仅为术后面形预测(VTO),而且为下颌升支状劈开截骨术(SSOR)的成功提供准确的数据。没有这些测量数据,则失去了诊断与手术设计的标准。作者为使下颌前突同其它畸形区别,提出了相应界值,使下颌前突的诊断和SSRO设计更具体化。更多还原

【Abstract】 Mandibular prognathism is the common diseases of maxillary function and facial profile, the X-ray measure is nessary for both VTOand Sussaful-SSRO. of measure figuse were lock,there would not standard of diagnosis and treatment. The figure of X- ray measure are distimgllished with the other maxillary defomities. According to the correlate of upper and lower jaw with SNplane. We can know locations of upper jaw and mandibular,both relations and relation incisors with jaw,They are important to diagnoris of the deformety and SSRO.更多还原