下颌龈癌早期累及颌骨早已有文献报道,因而下颌龈癌手术治疗的基本原则是作广泛切除(包括尚正常的颌骨在内),但术后常导致而颌畸形及咀嚼功能紊乱。因此作者认为为避免这种形态上及功能上的障碍,应尽可能缩小手术范围,而又能完全切除肿瘤。为此正确地掌握癌肿对颌骨的浸润情况是非常重要的。作者从诊断为原发性龈癌施行下颌骨部分切除或离断术的病例中挑选较完整摘除的 Early jaw gingiva involvement of the jaw has long been reported in the literature, and therefore the basic principles of surgical treatment of gingival cancer of the jaw for extensive excision (including normal jaw included), but often leads to jaw deformity and masticatory disorders. Therefore, the author believes that in order to avoid this morphological and functional barriers, the scope of the operation should be reduced as much as possible, but can completely remove the tumor. To correctly grasp the swelling of the jaw on the infiltration of this situation is very important. From the diagnosis of primary gingival cancer patients with partial mandibular resection or resection cases selected more complete removal of