后退颌

Objective Using X-ray cephelometrics,we analyzed the effect of the setback and the advancement of the jaw bone on the position of the hyoid bone and the hypopharyngeal airway,so that we could purpose some suggestions for the clinical treatment.

目的 通过X线头影测量分析了解颌骨后退与前徙对舌骨位置及咽下气道变化的影响情况，为临床治疗提供参数。

Total maxilla setback by Le Fort Ⅰ osteotomy is an effective way to cure the patients of maxillary prognathism with skeletal Class Ⅱ malocclusion.

对于骨性Ⅱ类上颌骨前突畸形患者，Le Fort Ⅰ型骨切开上颌骨整体后退术是一种安全、合理、有效的正颌外科术式。

Methods 23 patients with mandibular prognathism and 9 with mandibular hypoplasia were undergone mandibular setback or advancement respectively by way of bilateral sagittal split osteotomy.13 parameters were measured using lateral cephalometric X-ray films taken before and post treatment.

下颌前突患者23例与小颌畸形患者9例，分别行双侧矢状劈开后退或前徙下颌，手术前后拍摄X线头颅定位侧位片，进行头影测量，测量项目13项，测量数值配对t检验，并将下颌后退距离与各测量项目变化值作相关分析。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。