了解正颌外科手术中的可预测性误差。
Understanding Predictability Error in Orthognathic Surgery.
作者信息
Rodrigues Edlyn, Dhupar Vikas, Akkara Francis
机构信息
Department of Oral and Maxillofacial Surgery, Goa Dental College and Hospital, Bambolim, Goa 403-202 India.
出版信息
J Maxillofac Oral Surg. 2019 Sep;18(3):474-478. doi: 10.1007/s12663-018-01181-x. Epub 2019 Jan 18.
INTRODUCTION
Orthognathic surgery aims to improve the facial aesthetics while maintaining stable jaw form and function. Lateral cephalometry provides objective data used in pre-op mock surgery to predict movement of the maxilla and mandible during orthognathic procedures.
PATIENT AND METHODS
A prospective cohort study was conducted on 30 adult orthognathic surgery patients. Mock jaw surgery predicted two-dimensional (horizontal and vertical) linear movement of maxilla and mandible. Operative procedures performed were bilateral sagittal split osteotomy and Le Fort I osteotomy. Seven-day pre-op cephalogram (T1) was compared to 7th day post-op cephalogram (T2) to assess hard tissue movement of point A (maxilla) and point B (mandible) using Cartesian (-) plane.
RESULTS
The difference between predicted values to the 7th day post-op outcome results was statistically insignificant ( value less than 0.001).
CONCLUSION
Planning in orthognathic surgery using digitized two-dimensional cephalometric tracings and mock jaw surgery produces predictable results.
引言
正颌外科手术旨在改善面部美观，同时保持稳定的颌骨形态和功能。头影测量为术前模拟手术提供客观数据，以预测正颌手术过程中上颌骨和下颌骨的移动情况。
患者与方法
对30例成年正颌外科手术患者进行了一项前瞻性队列研究。模拟颌骨手术预测上颌骨和下颌骨的二维（水平和垂直）线性移动。所进行的手术操作包括双侧矢状劈开截骨术和Le Fort I截骨术。将术前7天的头颅侧位片（T1）与术后第7天的头颅侧位片（T2）进行比较，使用笛卡尔（-）平面评估A点（上颌骨）和B点（下颌骨）的硬组织移动情况。
结果
预测值与术后第7天结果之间的差异无统计学意义（值小于0.001）。
结论
使用数字化二维头影测量描记和模拟颌骨手术进行正颌外科手术规划可产生可预测的结果。
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