Soliman, M., Fahmy, O., Tolidis, K., Abdel-Mohsen, M., Salah-Eldine, D. (2023). The effect of applying a new formulation of CaCl2 on surface hardness of conventional glass ionomer. Journal of Fundamental and Clinical Research, 3(2), 207-217. doi: 10.21608/jfcr.2023.234105.1054
Mirna Ashraf Soliman; Ola Fahmy; Kosmas Tolidis; Mohamed Mahmoud Abdel-Mohsen; Dina Mohamed Salah-Eldine. "The effect of applying a new formulation of CaCl2 on surface hardness of conventional glass ionomer". Journal of Fundamental and Clinical Research, 3, 2, 2023, 207-217. doi: 10.21608/jfcr.2023.234105.1054
Soliman, M., Fahmy, O., Tolidis, K., Abdel-Mohsen, M., Salah-Eldine, D. (2023). 'The effect of applying a new formulation of CaCl2 on surface hardness of conventional glass ionomer', Journal of Fundamental and Clinical Research, 3(2), pp. 207-217. doi: 10.21608/jfcr.2023.234105.1054
Soliman, M., Fahmy, O., Tolidis, K., Abdel-Mohsen, M., Salah-Eldine, D. The effect of applying a new formulation of CaCl2 on surface hardness of conventional glass ionomer. Journal of Fundamental and Clinical Research, 2023; 3(2): 207-217. doi: 10.21608/jfcr.2023.234105.1054
The effect of applying a new formulation of CaCl2 on surface hardness of conventional glass ionomer
1Operative, Dentistry, Misr International University, Cairo, Egypt
2Head & Professor of Operative Dentistry, Faculty of Oral and Dental Medicine, Misr International University, Cairo, Egypt
3Head & Professor of Operative Dentistry, Operative Department, Faculty of Dentistry, The Aristotle University of Thessaloniki, Thessaloniki, Greece.
4Professor of Operative Dentistry, Faculty of Dentistry, Cairo University, Cairo, Egypt
5Lecturer of Operative Dentistry, Faculty of Oral and Dental Medicine, Misr International University, Cairo, Egypt
Abstract
Background: Glass ionomer cements (GIC) have excellent biocompatibility and fluoride release properties; however, they suffer from moisture sensitivity and low mechanical properties. Calcium chloride (CaCl2) in solution form improved the surface hardness of GIC. Some authors suggested the preparation of a new formulation of CaCl2 to be more stable in application. Surface hardness was measured at baseline and after pH-cycling protocol. Aim of the study: to evaluate the effect of CaCl2 application in both solution and gel forms on the surface hardness of the GIC at baseline and after pH cycling. Materials and Methods: Thirty disc-shaped specimens were prepared from Fuji IX GIC and divided into three groups according to different surface treatments, (n=10); group 1 (control), group 2 (CaCl2 solution) and group 3 (CaCl2 in gel form). pH-cycling protocol was done for all specimens using 5% acetic acid (pH=3) twice /day, rinsed, dried and then stored in distilled water. This cycle was repeated for 14 days. Surface hardness was measured at baseline and after pH-cycling. Results: At baseline and after pH-cycling, the control group showed the lowest mean hardness. Two other CaCl2 gel and CaCl2 sol. showed insignificant differences between each other. pH-cycling resulted in a significant decrease in surface hardness in all groups compared to baseline. Conclusions: Both CaCl2 forms improved surface hardness of self-setting GICs. Yet, handling of gel-form was easier. pH-cycling protocol deteriorated surface hardness values of all groups.
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