Selcopintide (Cpne7-DP) acetate consists of a synthetic peptide corresponding to the 10 amino acid residue 344-353 fragment of the hCPNE7 protein. Selcopintide acetate highly reproduces the in vitro effects of CPNE7 by upregulating odontoblast marker genes, DSPP, and Nestin. Selcopintide acetate promotes dentin regeneration in dentinal defects of various degrees and that the regenerated hard tissue demonstrates the characteristics of true dentin.