This work was supported by the National Natural Science Foundation of China[grant number 81701869];the China Postdoctoral Science Foundation[grant number 2019M653664];the Fundamental Research Funds for the Central Universities[grant number xjj2017168].
Due to the secondary dentin formation,the dental pulp undergoes changes in shape throughout life.Based on this phenomenon,the Kvaal method has been applied to various populations for age estimation,and its usefulness ...