Evaluation of pH and calcium ions release of two tricalcium silicate-based sealers through roots of primary teeth

Abstract

Background: This study aimed to evaluate the pH and calcium ions (Ca²⁺) release from two tricalcium silicate-based sealers (Sealer Plus BC and Bio-C Pulpecto) through roots of primary teeth.

Methods: Forty root canals of primary incisors were prepared and distributed into four groups according to the filling material: G_PlusBC (Sealer Plus BC); G_BioC (Bio-C Pulpecto); G_Ultra (Ultracal); and G_C (no filled). pH measurement was performed with a digital pH meter, and the Ca²+ release was measured in an atomic absorption spectrophotometer at baseline, 24 h and 1, 2, 3, and 4 weeks later. The data were analyzed using two-way ANOVA and Tukey's post hoc tests.

Results: The results did not reveal significant differences between the groups in terms of pH in 24 h, 1-, and 2-weeks' periods. After 4 weeks, there was a significant difference, with the highest mean pH values in G_Ultra, followed, respectively, by G_PlusBC and G_BioC. Regarding the Ca²+ release, the G_Ultra showed greatest mean values at all evaluated times, and the other groups showed no difference between them.

Conclusion: Both sealers were able to promote the elevation of the pH and Ca²+ release through roots of primary teeth, which brings favorable properties for their use as a filling material.

Keywords: Calcium release; calcium silicate; pH; primary teeth; root canal sealer.