摘要
目的测量骨性Ⅲ类错患者正颌手术前后髁突下颌边缘运动的对称性,探讨成人骨性Ⅲ类错患者正颌术后髁突运动功能的恢复情况。方法选取成人骨性Ⅲ类错患者15人,分别在术前、术后6个月、术后9个月,运用下颌三维超声定位技术.ARCUSdigma系统对最大张口和前伸运动时两侧髁突对称性进行分析。结果下颌最大张口和前伸运动时,骨性Ⅲ类患者术前和术后6个月组的双侧髁突运动轨迹在冠状向上不一致,差异有统计学意义(P<0.05);术后9个月组双侧髁突三维方向的运动轨迹均较好,与术前相比无统计学差异(P>0.05)。结论成人骨性Ⅲ类错患者正颌术后9个月时下颌功能性运动逐渐趋于正常,提示应将正颌手术后正畸时间保持在9个月以上。
Objective To investigate the condylar movement traces before and after orthognathic surgery for skeletal ClassⅢmalocclusion. Methods In 15 skeletal Class Ⅲ adult malocclusion patients, the condylar movements were recorded during maximum open-closing and protrusive movement of the mandible before surgery, and six and nine months after surgery by using ARCUS digma mandibular moving track analysis system. Results The bilateral condylar movements in the coronal plane showed significant differences in maximum open-closing movement before surgery and the sixth month after surgery （ P 〈 0. 05 ）. The condylar movement exhibited normal nine months after surgery. Conclusion The functional movements of the mandible became stable ninth months after surgery. Therefore, the orthodontic treatment time for over nine months were suggested after orthognatbic surgery.
出处
《北京口腔医学》
CAS
2012年第5期278-280,共3页
Beijing Journal of Stomatology
