[摘要]拔牙后牙槽嵴的高度、宽度以及周围软组织的保存对于缺牙部位进行种植修复有着非常重要的意义。牙齿拔除后，拔牙窝内新生骨一般无法达到原牙槽嵴的水平，唇颊侧骨板受到的损害尤其严重，造成种植体植入时骨量不足。牙槽嵴位点保存的目的是在拔牙后能有效地保存剩余牙槽嵴的高度、宽度以及相应软组织量，为随后的种植手术和修复提供足够的骨量和美学基础。本文对牙槽嵴位点保存技术及相关的移植材料在骨内种植体领域的研究进展作一综述。

    [关键词]骨吸收；位点保存；牙种植；屏障膜；骨移植材料

    [中图分类号]R 783.4[文献标志码]A[doi]10.3969/j.issn.1673-5749.2012.0*.0**

    Application of postextraction socket site preservation in implantologyYang Mingde, Tang Yi.(Dept. of Implantation, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China)

    [Abstract]The preservation of height and width dimensions and the soft tissue around the postextraction socket is very significant to place an implant. After teeth extraction, the newly formed bone in the alveolar ridge can not reach the original level in three dimensions, particularly in bone level of the buccal which results in the scarcity of bone when the implants are placed. The purpose of the preservation of the sites of the alveolar ridge and the soft tissue will help maintain height and width dimensions and soft tissue around the alveolar ridge. The method will provide the enough three-dimension capacity of bone and the aesthetic shape. The purpose of this article is to summarize the method and transplantable material of the preservation of the sites of the alveolar ridge and the soft tissue in the field of dental implant. ......