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Obwegeser(1957)首先介绍了口内法进行下颌升支矢状劈开截骨术。最初几年,由于手术操作困难,时间较长和并发症多等原因,临床上应用很少。为了解决以上问题,Dal Pont(1961)对该技术做了改进,使它变得简单,容易掌握。近年来,这种术式在临床上已广泛应用,在矫正下颌骨畸形方面获得了令人满意的效果。下颌升支矢状劈开截骨术口内法的特点是:口外皮肤不留疤痕,更符合整形外科手术原则,同时也避免了损伤面神经下颌缘支
Obwegeser (1957) first introduced the mandibular ascending ramus sagittal split osteotomy. In the first few years, due to difficult operation, long time and complications and other reasons, few clinical applications. To solve the above problem, Dal Pont (1961) made some improvements to the technology to make it simple and easy to grasp. In recent years, this procedure has been widely used in clinical practice, in the correction of mandibular deformities obtained satisfactory results. Mandibular ascending branch sagittal split osteotomy Oral method is characterized by: no external scar skin, plastic surgery more in line with the principles of surgery, but also to avoid damage to facial mandibular limbal branch