亚洲人面部特征之一是鼻旁区相对于凸出的颧部而言较为平坦,因而Ⅲ类错(牙合)者多有面中部凹陷。部分病例可通过Le FortⅡ或Ⅲ型骨切开术而改善,有些病例则必须通过自体或异体移植才能改善面型。在正颌手术中(尤其是下颌升支手术)喙突很容易获取,并可作为自体供骨,本文目的是评价喙突能否作为鼻旁区加高材料。 One of the facial features of Asians is that the parapharyngeal region is relatively flat with respect to the raised zygomatic region so that the type III malocclusion is more prone to denticulate. Some cases can be improved with Le Fort II or III osteotomy, and in some cases autologous or allograft must be used to improve the appearance. In orthognathic surgery (especially mandibular ascending branch surgery) coracoid process is very easy to obtain, and can be used as a self-osteoporosis, the purpose of this paper is to evaluate whether the coracoid process can be used as a material in the paraneoplastic region.