Notch signal pathway might involved in the maturation of dental pulp cells, and DEX at the concentration of 10-7M could depress the expression of DSPP and increase that of Heyl.

• Notch 信号途径可能参与了牙髓细胞的诱导分化过程,10-4M浓度DEX能抑制DSPP的表达,促进Hey1的表达。