正畸一正颌联合治疗骨性Ⅲ类错（牙合）畸形对咽腔间隙影响的三维重建分析  

Three-dimensional analysis of pharyngeal airway in skeletal Class Ⅲ patients after sagittal splitramus osteotomy

作　　者：王宏伟[1] 王建国[2] 蔡智芳[2] 齐素青[3] 李新华[3] 

机构地区：[1]天津市口腔医院正畸科,300041 [2]邢台市眼科医院正畸科,河北054000 [3]邢台市眼科医院正畸科

出　　处：《中华口腔医学杂志》2012年第4期221-224,共4页Chinese Journal of Stomatology

摘　　要：目的探讨正畸-正颌联合治疗骨性Ⅲ类错（牙合）畸形对咽腔间隙的影响。方法选取正畸一正颌联合治疗的骨性Ⅲ类错（牙合）畸形患者20例（男性9例，女性11例）作为患者组，健康对照组40名（男性18名，女性22名），患者组治疗前1周及术后6个月拍摄锥形束CT，三维重建上气道模型，对患者治疗前后腭咽段、舌咽段和喉咽段的矢状径、冠状径、截面积以及容积进行定量分析，并与健康对照组进行比较。结果患者组术后腭咽段、舌咽段和喉咽段矢状径分别减小了（2．7±3．5）、（3．0±3．8）、（2．7±3．3）mm，治疗前后差异均有统计学意义（P〈0．05）；术后喉咽段冠状径缩小了（4．8±4．1）mm，与治疗前相比差异有统计学意义（P〈0．05）；术后各段最小截面积、容积及总容积也均显著小于治疗前，其中总容积减少（9991±10352）mm3（P〈0．05）。患者组术后各段截面积和容积均显著小于健康对照组（P〈0．05）。结论正畸一正颌联合治疗骨性Ⅲ类畸形可造成咽腔缩窄。Objective To analyze the three-dimensional changes of pharyngeal airway in patients with skeletal Class 111 malocclusion after the combined orthodontic and orthognathic treatment. Methods Twenty patients （9 males, 11 females） and 40 subjects with normal occlusion were involved in the study. Cone-beam computed tomography （CBCT） were performed on patients one week and six months after treatment. Raw data were reconstructed into three-dimensional model and sagittal and transversal measurements, cross sectional areas, partial and total volumes were computed. Results After treatment, the sagittal diameters of each section were significantly reduced by （ 2. 7 ± 3.5 ）, （ 3.0 ± 3.8 ）, （ 2. 7 ± 3.3 ） ram, respectively （ P 〈 0. 05 ）. The transversal diameter of laryngopharyngeal airway constricted significantly by （4. 8 ±4. 1 ） mm（P 〈0. 05）. Cross sectional areas and volumes of each part in patients after surgery were significantly narrower compared with those of the controls. Conclusions After combined therapy the pharyngeal airway space decreased.

关 键 词：错猞 安氏Ⅲ类 咽 锥束计算机体层摄影术 

分 类 号：R783.5[医药卫生—口腔医学]