Evaluation of pH and calcium ion release in capseal I and II and in two other root canal sealers

Objective The aim of this study was to compare the pHs and calcium ion releases of newly developed, calcium phosphate–based root canal sealers (Capseal I and II) with those of Sealapex (SA) and Sankin Apatite Root Sealer III (SARS III). Study design Each material (n = 10) was mixed, inserted into polyvinyl chloride (PVC) tubes, and immersed in a vial containing deionized water. The control group consisted of empty PVC tubes (n = 10). The pHs and calcium ion releases were measured by pH meter and ICP-AES (inductively coupled plasma atomic emission spectrometer) at 24 hours and 96 hours, and at 7, 15, and 28 days. The results were analyzed with the Kruskal-Wallis test. Results Capseal I and II produced pHs and calcium ion releases higher than or equal to those of SA and SARS III ( P < .05). Conclusions Capseal I and II resulted in higher alkalinity and higher calcium ion releases than SA and SARS III.