关键词: 牙槽嵴保存, 种植体, 即刻种植, 牙槽嵴骨丧失, 骨移植材料, 骨重塑

Abstract: Tooth extraction will cause the resorption of alveolar bone and soft tissue retraction，and the application of alveolar ridge preservation technology can block or slow down alveolar bone resorption and achieve the preservation or increment of the remaining alveolar crest. To assess the remaining alveolar fossa bone walls and their post-extraction conditions is essential to choosing an implant treatment regimen. Although alveolar ridge preservation technology is an effective surgical method to prevent alveolar bone resorption，we need to consider its indications，strictly follow the surgical process of alveolar ridge preservation，apply appropriate surgical methods，select proper bone grafting material，and do a good job of first-stage wound closure. In this article，we introduce the indications，advantages and disadvantages，surgical methods，and timing of implant surgery of alveolar ridge preservation technology，in order to help clinicians to be clear with the surgical indications and provide some guidance for clinicians when they perform stardardized operation.

Key words: alveolar ridge preservation, implant, immediate implant placement, alveolar bone loss, bone graft materials, bone remodeling