恒牙胚是引起乳牙生理性根吸收的重要因素,但却非唯一的因素。恒牙胚缺失的乳牙也会发生根吸收,导致乳牙脱落。下面就破牙细胞及其相关信号通路、继承恒牙胚对乳牙根吸收的影响和继承恒牙胚缺失下的乳牙根吸收作一综述。 Permanent tooth germ is caused by physiological root absorption of deciduous important factor, but not the only factor. Permanent tooth germ loss of primary teeth will also occur root absorption, resulting in deciduous teeth. The following broken cells and their related signal pathways, the inheritance of permanent tooth germs on the absorption of primary root resorption and inheritance of permanent tooth germ loss under the primary root resorption are reviewed.