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下颌骨位于面部下1/3,形态较为复杂,依靠其上附着的肌肉行使生理功能。下颌骨缺损的患者在临床上较为常见,多因肿瘤切除导致,术后均会出现面部局部凹陷畸形,同时影响患者咀嚼,咬合及进食等正常生理功能,进而影响其生存质量[1]。修复下颌骨缺损的主要原则为保证缺损下颌骨的完整性、咀嚼功能和面部外形,并为牙列修复或牙种植创造条件。当前,修复下颌骨缺损的方法种类繁多,如:血管、非血管化骨瓣移植或骨代品等[2]。
Mandible in the face under the 1/3, the shape is more complex, rely on the muscles attached to its physiological function. Patients with mandibular defects are more common in clinical practice, mostly due to tumor resection, postoperative facial depression, facial deformity, and affect the normal physiological functions such as chewing, occlusion and eating, thus affecting their quality of life [1]. The main principles of repairing mandibular defects are to ensure the integrity of mandibular defect, masticatory function and facial contour, and to create conditions for dentition restoration or dental implants. Currently, there are a variety of methods for repairing mandibular defects, such as vascular, non-vascularized bone graft or bone substitute [2].