上颌骨前份截骨术已广泛应用于临床,但是,对于是否要保留腭大动脉以维持上颌骨前份截骨段的血供尚无一致意见,手术的成败关键在于手术后局部软、硬组织是否有足够的血液供应;而腭部横行切口是否需要,这个问题有时关系到截骨段能否获得充分的移动。本研究利用X线血管造影法观察在切断双侧腭大动脉并在唇内侧做弧形切口条件 However, there is no consensus on whether to retain the palatal artery to maintain the blood supply of the pre-maxillary osteotomy. The key to the success or failure of surgery is the local soft and hard tissue after the operation Whether there is adequate blood supply; and palatal transverse incision is needed, the issue is sometimes related to the osteotomy can get adequate movement. In this study, the use of X-ray angiography in the observation of bilateral palatal arteries cut off and make an arc-shaped incision on the inside of the lips