牙周炎患者就诊时,除具有通常的牙周组织炎症症状外,或因合并牙外伤、咬合创伤以及经久不愈的牙周-牙髓联合病变,牙槽骨吸收多深达根尖,四壁骨袋较为常见。此时患牙已无保留价值,需拔除。由于大量软、硬组织缺损,宜行位点保存手术或种植修复。通过植入骨替代材料,必要时辅助结缔组织瓣移植,恢复充足的骨量、牙龈量,为下一步延期种植牙提供良好的软、硬组织条件。本病例拔牙窝处骨缺损较大,且邻牙牙槽骨炎性吸收,不宜同期即刻种植。为提高成骨效果, Patients with periodontitis, in addition to the usual symptoms of periodontal inflammation, or due to combined dental trauma, occlusal trauma and prolonged healing of periodontal - endodontic joint lesions, alveolar bone up to the deep root tip, four Wall bag is more common. Teeth at this time has no reserved value, need to be removed. Due to a large number of soft and hard tissue defects, appropriate site preservation surgery or implant repair. Through the implantation of bone substitute materials, if necessary, assist the connective tissue flap transplantation, restore adequate bone mass, the amount of gums, dental implants for the next phase to provide good soft and hard tissue conditions. The cases of tooth extraction at the socket defect, and adjacent alveolar bone inflammatory absorption, should not be planted immediately over the same period. In order to improve the osteogenesis effect,