Hydroxyl ion release ability from mixture of Indonesian White Portland Cements - Bi2O3 - Light Cured Methacrylate Based Resin as a Potential Pulp Capping Material

ABSTRACTIntroduction: The bioactivity property of pulp capping materials is determined by the hydroxyl ion release ability, which may alter the environmental pH to become alkaline. Calcium silicate-based materials are antibacterial, able to induce reparative dentin and have a good bacteria-tight seal. The poor handling of calcium silicate-based materials can be overcome by adding resin, so the materials will be easier to handle. Therefore, the purpose of this study was to synthesize a mixture of Indonesian White Portland Cements - Bi2O3 – UDMA and analyzed its hydroxyl ion release ability. Methods: The Indonesian White Portland Cements - Bi2O3 mixture was prepared using the simple solution method and mixed with UDMA. The sample’s ability to release hydroxyl ions was measured using a pH meter and titration test. Results: This study showed that the mixture of Indonesian White Portland Cements - Bi2O3 - UDMA had an initial pH of 11.04 and increased to its peak on 168 hours mark, or on day seven, to pH 11,77 with hydroxyl ion release value of 10-2.23 Conclusion: The mixture of Indonesian White Portland Cements - Bi2O3 -UDMA had an alkaline pH, was able to release hydroxyl ion and had a potential to be used as a pulp capping material.Keywords: The mixture Indonesia White Portland Cements - Bi2O3 – UDMA, Hydroxyl ion, Release Ability