摘要重度牙周炎是成年人失牙的主要原因，患者常伴不同程度的水平向和垂直向牙槽骨丧失，针对复杂的牙槽骨缺损，医师需要充分掌握重度牙周炎的牙槽骨丧失特点及牙槽骨增量术要点，从而选择合适的骨缺损修复方法，制订适合的手术方案，完成种植体植入与冠修复，以维持牙列完整，这对患者牙周健康的长期稳定具有重要意义。文章结合临床经验与文献回顾，概述重度牙周炎患者的牙槽骨丧失特点，并针对后期种植治疗时机的选择进行阐述与总结，以期为临床重度牙周炎种植修复治疗提供参考。

abstractsSevere periodontitis is the main cause of tooth loss in adults, with varying degrees of horizontal and vertical alveolar bone loss. In view of the complex alveolar bone defect, a suitable surgery planning should be made on the basis of fully understanding the characteristics of alveolar bone defect in severe periodontitis and the key points of bone augmentation technique, so as to choose an appropriate method for reconstruction of alveolar bone and complete the implantation and restoration to ensure the integrity of dentition, which are important for the long-term stability of periodontal health. Based on clinical experiences and literature review, we summarizes the characteristics of alveolar bone loss in patients with severe periodontitis and the timing of implant placement after bone augmentation surgery, in order to provide reference for implant treatment of severe periodontitis.