Effect of pH on the compressive strength of Grey Mineral Trioxide Aggregate and Biodentine

Aim: The aim of this study was to compare the effect of an acidic and alkaline environment on the compressive strength of Grey Pro Root Mineral Trioxide Aggregate and Biodentine. Methodology: A total of eightyhuman, mandibular molars were used. Perforations were made in the furcation of each molar and enlarged to #3 Pesso drills. The repair was performed, according to the materials used. Samples of each material were repaired according to the repair material and randomly divided into two groups (n=40), GMTA and Biodentine, respectively. These were further apportioned into four subgroups (n=10) according to storage media and time. Four subgroups of ten samples eachwere exposed to pH 5.4 and pH 7.4 for 4 days respectively.Compressive strength was measured for each of the sample and was measured 4 days after the exposure. Results: Data was subjected to one-way ANOVA using Tukey’spost hoc test. Biodentine displayed greater resistance to dislodgement than Grey Mineral Trioxide Aggregate at acidic environment, 4.66±0.94 MPa and 2.41±0.95. A p-value <0.05 was consideredto be statistically significant. Conclusion:In an acidic environment, compressive strength of Grey Mineral Trioxide Aggregate was affected than that of Biodentine.