关键词: 牙槽骨, 拔牙, 吸收, 功能刺激

Abstract:

Physiological and pathological absorption of alveolar bone was always observed  after tooth extraction，which would lead to alveolar sites loss and subsequently affect later restoration. The reasons of alveolar bone loss include local factors and systemic factors，among which lacking of immediate functional stimulating is one of most important local factors. In this article，we tried to elababorate the reasons，prevention and treatment methods of alveolar bone absorption after tooth extraction，and provide the reference for alveolar site preservation after tooth extraction so as to achieve favorable clinical result in clinic.

Key words: alveolar bone, tooth extraction, absorption, functional stimulation