Solubility and pH of calcium hydroxide lining cements

Abstract

Objective: To analyze the solubility and the potential of hydrogen ions in calcium hydroxide-based lining cements used in dentistry to protect the dentin-pulp complex during rehabilitation treatments. Methods: The evaluated cements bear the commercial names Dycal (Dentsply Sirona), Hydcal (Maquira), Hydro C (Dentsply Sirona), and light-cured Biocal (Biodinâmica). Solubility measurements followed the methodologies proposed by the American National Standards Institute and the American Dental Association, while the potential of hydrogen was determined using a digital pH meter. Results: Solubility exhibited no significant differences either individually or between the groups. Regarding the potential of hydrogen, the results were as follows: Dycal 12.06, Hydcal 12.06, Hydro C 10.5, and light-cured Biocal 8.48, highlighting disparities between the groups. Conclusion: There were no statistically significant differences in the descriptive analysis of the solubility of the tested calcium hydroxide cements. However, the descriptive analysis of the pH of the cements revealed statistically significant variances between the groups.