拔牙位点保存技术是为了预防及减少牙槽嵴的废用性萎缩吸收及牙龈乳头的退缩,使牙槽嵴骨量的高度、宽度及密度满足后期种植的需要,并使牙龈乳头恢复正常高度以满足美学要求的一种方法。本文就拔牙后牙槽窝的生理性变化、牙槽骨及软组织的保存方法及现有的植骨材料做一介绍。 Tooth extraction site preservation technology is to prevent and reduce alveolar ridge waste atrophy Absorption and gingival papillae retraction, the alveolar bone mass height, width and density to meet the needs of late planting, and the gums to return to normal height A way to satisfy aesthetic requirements. This article describes the physiological changes of the alveolar fossa after tooth extraction, alveolar bone and soft tissue preservation method and the existing bone graft material to make an introduction.