面下1/3骨骼轮廓结构整形的术前设计

目的 探讨面下1/3轮廓整形中进行骨骼位置移动的术前设计。方法 术前设计方法包括面弓转移、头影测量、模型外科设计等步骤。结果 通过完善的术前设计和分步骤治疗，142例面部畸形患者获得较好的矫治。结论 ①面弓转移过程中中线的确定对于手术效果影响非常重要，不对称畸形患者的中线确定要考虑后续手术的难易与可能性；②骨骼的三维移动和旋转直接改变面型，同样的截骨部位，不同的移动产生不同效果。

The preoperative design for remodeling inferior one-third facial contour

OBJECTIVE: Facial contour remodeling is an important part of plastic surgery. Some skeletal abnormalities, such as mandible protrude, maxillary retrusion, induce the facial asymmetry (including arrowy direction or/and coronary direction), malocclusion, etc. These abnormalities are seen commonly in the lower one third of the face. Evaluation and preoperative design is very important for the treatment of these abnormalities. The purpose of this item is to summarize our experience in the preoperative design during the treatment. METHODS AND RESULTS: Observation of the facial feature of the patient, cephalometric tracing, face-bow transfer and model reconstruction were necessary for the preoperative design. Three-dimensional direction was included in the bone movement for operation and soft tissue should be taken into account simultaneously. All the factors mentioned above were summarized, and outcomes were gathered. CONCLUSIONS: Determination of facial midline was very important, especially for asymmetry patient. The bone was moved in three-dimensional direction. The same site of osteotectomy may produce different effects by different movements.