Objective: To evaluate the thickness of pulp chamber and morphologic characteristics in order to plan the treatment ofdeciduous molars using cone beam computed tomography. Material and Methods: Cross-Sectional study is done with CBCT images of primary teeth of children. Evaluation of Pulp chamber thickness and morphology of each maxillary right primary second molar was done through CBCT. Data were analyzed and sent for statistical analysis. Results: Total 50 teeth i.e., right maxillary primary second molars of children age group 4-10 years were analyzed. Male shows the horizontal and vertical Mean (SD) values 4.5 (0.76) and 1.7(0.58) respectively greater than females. Mesial and Distal pulp horns were also greater in height for males with Mean (SD) 3.1(0.51) and 2.5(0.52) respectively. Conclusion:General variations might be involved however, when preparing a course of treatment for a childit is important to take note of gender differences in the mesiobuccal pulp horn. Even small restorations have a significant effect on pulp size. Probably it becomes exposed when the cavity is being prepared.