ABSTRACT
Objective To explore the clinical application value of three-dimensional reconstruction of maxillary canine pulp volume /tooth volume (PV/TV)in individual gender determination.Methods There were 103 patients (51 males and 52 females) with CBCT imaging data from September 2015 to August 2016, Shanxi Medical University, department of radiology, Mimics 17.0 software was used to measure pulp volume of maxillary canines and tooth volume, and to calculate the ratio of pulp volume/tooth volume.The data were processed by SPSS16.0 statistical software and Fisher discriminant method. The gender determination function was obtained and Cross -Validated method for performance evaluation. Results When gender determination was determined by tooth volume (TV) and pulp volume/tooth volume (PV / TV) as the study index, the gender discriminant function was Y=0.009(TV)+28.896(PV/TV) - 6.962, Cross-validated method for the effect of evaluation, to determine the compliance rate: 51 males, the correct rate of 64.7%;52 female, the correct rate of 78.8%. Conclusion The tooth volume (TV) and pulp volume/tooth volume (PV/TV)can be used as a research indicator of gender inference, it provides a new method and avenue for the gender determination in forensic medicine.