牙齿摘除以后,牙槽骨逐渐萎缩,使牙槽嵴变低、变窄,甚至呈刀刃状,这是临床上常见的现象,尤以无牙颌患者最为常见。牙槽嵴的这种变化,直接影响了义齿的固位与功能恢复。以往为了解决这类患者义齿修复中的困难,通常是先行外科手术——前庭沟形成术、牙槽嵴植骨加高术等,而后才行义齿修复。但由于适应症的限制和材 After the removal of teeth, the alveolar bone gradually shrinks, the alveolar ridge becomes lower, narrowing, or even blade-like, which is clinically common phenomenon, especially in edentulous patients most common. Alveolar ridge of this change, a direct impact on the denture retention and functional recovery. In the past in order to address the difficulties of such patients in the restoration of the denture, usually the first surgery - vestibular groove formation, alveolar bone grafting and so on, and then the denture repair. But due to the limitations of indications and materials