Evaluation of Modified Portland Cement versus Mineral Trioxide Aggregate as a pulpotomy agent in Primary Molars: Histological Study

Background: The aim of this study was to evaluate the histological response of dental pulp tissue in primary molars to Modified Portland Cement (MPC) mixed with Zirconium Oxide and Calcium Chloride in comparison with Mineral Trioxide Aggregate (MTA). Methods: The study was conducted on children between 7.5-9 years of age, pulpotomy was performed on 60 Primary Molars (to be extracted as a part of Orthodontic treatment). The molars were divided randomly into two groups, each of them contains 30 teeth. After pulpotomy was conducted, the root Pulp was covered with MTA or MPC and a layer of Glass Ionomer Cement (GIC) and the tooth were filled with amalgam eventually. The teeth were extracted after one week, one month, and two months respectively and histological samples were collected and evaluated Based on the Inflammation response, soft tissue organization, and Dentinal bridge formation. Results: Modified Portland Cement has showed no significant differences in terms of inflammation response, soft tissue organization, and Dentinal bridge formation in comparison with MTA in the observation period. Conclusion: MPC can be a replacement material of MTA in terms of primary molars pulpotomy.