上颌骨肿瘤手术造成骨质缺损甚大,采用外科方法修复还有许多困难,一般都在手术后用托牙修复。上颌骨质缺损后,依其缺损的大小,患者有不同程度的面部凹陷畸形及语言咀嚼等功能障碍。牙槽部的缺损,因合并失牙而影响咀嚼,颚部的缺损,则有口鼻穿通,穿通小时,饮食进入鼻腔或鼻窦,造 Surgical treatment of maxillary bone defects caused by a large bone, using surgical methods to repair there are many difficulties, usually after surgery with denture repair. After the maxillary bone defect, according to the size of the defect, the patient has varying degrees of facial deformity and language chewing dysfunction. Alveolar Department of the defect, due to the combined loss of teeth and chewing, jaw defects, then the nose and mouth piercing, piercing hours, diet into the nasal or sinus, made