乳牙根生理性吸收机制的研究进展

Research progress of the mechanisms for physiologic root resorption in primary teeth

乳牙根的生理性吸收过程中既有牙槽骨、牙本质等的组织学改变,也有破骨细胞、破牙细胞等的细胞学改变,同时还有多种细胞因子的参与。继承恒牙的牙囊和星网状层似乎在乳牙根的吸收中起着重要作用,而继承恒牙先天性缺失的乳牙根吸收最终仍会发生,其机制目前尚不明了。下面从细胞及其分子水平就乳牙根生理性吸收机制的研究进展作一综述。

Root resorption is a physiologic event for the primary teeth, involving the tissue change of alveolar hone and dentin, the cellular change of osteoclasts and odontoclasts, also kinds of cytokines. The stellate reticu- lure and the dental follicle of the underlying permanent tooth seems to be important for the deciduous root re- sorption. However, primary teeth without a permanent successor eventually exfoliates as well. Our current under- standing on the underlying mechanisms is slim. This article summarizd the research progress on the mechanisms of physiologic root resorption in primary teeth.