FAQ 常见问答题

Patients in Western countries generally do orthodontic correction first, do jaw surgery after tooth shape adjustment, and then make secondary adjustments to tooth morphology after surgery recovery to achieve relatively perfect results; But many patients in China, hope that their facial contours, in a short period of time to be improved, unwilling to spend a year or two to do orthodontic correction, in this case, as long as the teeth do not affect the operation, such as the root of the tooth does not affect the alveolar bone, osteotomy line, etc., can directly lower the jaw surgery, and then carry out orthodontic treatment, which saves time, and the orthodontics after surgery is simpler, which is more in line with China’s national conditions.

西方国家的患者，一般是先做正畸矫正，牙齿形态调整好后做下颚手术，手术恢复好后，再对牙齿形态进行二次的调整，以达到相对完美的效果；但我国的许多患者，希望自己的面部轮廓，在短时间内得到改善，不愿意花一两年先做正畸矫正，这种情况下只要牙齿不影响手术，譬如牙根不影响牙槽骨、截骨线等，可以直接下颚手术，然后再进行正畸治疗，这样又省时间，术后的正畸又简单些，比较符合中国的国情。

For simple malocclusion, not accompanied by obvious jaw deformity, such as crowded teeth, dentition gaps, etc., simple orthodontic treatment can be used to achieve satisfactory correction results through tooth movement; However, for skeletal occlusal facial deformity, orthodontic treatment of tooth movement is far from enough, and can only be corrected through the combination of orthodontics and orthognathic surgery.

对于简单的错颚畸形，不伴有明显的颚骨畸形，如牙列拥挤、牙列缝隙等，可采用单纯的正畸治疗，通过牙齿移动，取得满意的矫正效果；但对于骨骼型的牙合面畸形，仅仅进行牙齿移动的正畸治疗，是远远不够的，只能通过正畸、正颚手术的联合治疗，才能得到矫正。

If orthodontic treatment has been done before the operation, the teeth are arranged neatly, and the dental space left after the operation is normal or close to normal, you can not do orthodontic; In fact, we found that a considerable number of patients, even if there is a certain gap in the teeth after surgery, but because it is hidden in the mouth, it is not easy to find, and they do not have orthodontics; Of course, for those who have not done orthodontics before surgery, the postoperative tooth spacing is too large or uneven, and the patients have high cosmetic requirements, and orthodontic adjustment is still needed.

如果手术前已经做过正畸治疗，牙齿排列很整齐，术后遗留的牙间隙，又正常或接近正常，可以不做正畸；实际上，我们发现有相当部分的患者，即使术后牙齿有一定的间隙，但因为隐藏在口腔内，不容易发现，也没有做正畸；当然对于术前没有做过正畸，术后牙齿齿距过大或排列不齐，患者美容要求高，仍然需要正畸调整。

For mild and moderate mandibular retraction or protrusion, the surgical requirements can be satisfied only by osteotomy under the mandibular root tip, moving the osteopath, tooth structure or sagittal splitting of the mandibular. For severe retraction or protrusion, due to the limited mobility of the above structures, even if the mandible is moved to a maximum extent, it still cannot meet the requirements of normal occlusion. In this case, maxillary surgery is often required at the same time to achieve normal occlusion and aesthetic requirements.

轻中度的下颚后缩或前突，仅仅通过下颚根尖下截骨，移动整骨块、牙齿结构或者下颚矢状劈开移动，就能满足手术要求；对于严重的后缩或前突，因为上述结构移动度有限，即使极大限度移动下颌骨，仍然不能满足正常咬合要求，这种情况下往往需要同时行上颚骨手术，来达到正常咬合和美观的要求。

For the impact of massetic muscle, it must be taken into account, because some operations will involve the opening and closing function, and the dissection during surgery will lead to changes in the direction and force of muscle action.

对于咀嚼肌的影响，必须考虑到，因为一些手术会涉及开合、闭合的功能，手术中剥离会导致肌肉作用方向，作用力的改变。

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