Akademik Veri Yönetim Sistemi
Cumhuriyet Dental Journal, cilt.25, ss.100-107, 2022 (Scopus)
© 2022. All Rights Reserved.Aim: The aim of the present study was to examine the effect of alkasite material on the pH of the environment when used as a restorative material in different cavity preparations and prepared as a single block in standard sizes. Methods: Alkalizing potential of the alkasite material was evaluated by restoring extracted teeth with three different restorative materials and preparing edentulous blocks. For this purpose, 30 extracted premolar teeth and silicone molds of standard size (2x2x4 mm) were used. One of the study groups consisted of edentulous alkasite blocks of standard size and the other three groups (O, OM, MOD) were alkasite restorations of cavities of different sizes. The teeth were divided into three groups according to the type of cavity preparation. Restoration of cavities and preparation of the blocks were performed according to Cention N (Ivoclar Vivadent) manufacturer's instructions. All restorations and blocks were immersed individually in distilled water at pH 4. pH measurements were obtained using a pH meter (Sartorius, France) at 10-min, 20-min, 30-min and 60-min timepoints following immersion. Measurements were repeated for all four groups at the end of 24 hours, 48 hours and 7 days. Results: Alkalizing effect was observed in all groups. pH changes after 24 hours, 48 hours and 7 days showed a significant difference among the groups at the measurement timepoints (p<0.05). Maximum pH increases were seen at 24 hours, and minimum pH changes at 48 hours. Within the first 24 hours, MOD restoration group showed the highest pH values at 60 minutes. Conclusion: Within the limits of the study design, O, MO and MOD dental restoration groups were associated with a significantly greater pH increase compared to alkasite blocks. The effect of alkasite restorative material alone is not sufficient to provide pH increases above the critical threshold. Ions released from the tooth also seem to have an effect on pH increase.