Bioactive Resin Modified GIC vs. Conventional One in Vivo and in Vitro Study

Abstract

PURPOSE:To evaluate the bioactive resin modified GIC material (Activa) vs. conventional one (Vitremer) clinically and laboratory. Materials & Methods: Clinically:Fifteen healthy children of both sexes aged (4-7) having a bilateral similar initial occlusal caries on the lower 2 nd primary molars were selected. A split-mouth design was used where conventional Class I cavities were prepared on carious molars. One side was restored with Activa and the contra-lateral side restored with Vitremer (control). The patients were recalled for clinical evaluation at 3, 6 and 12 months postoperative. The modified United States Public Health Service (USPHS) evaluation criteria were used. Laboratory: included: 1. Mechanical strength tests (compressive and diametral tensile). 2. Shear bond strength test between both restorative materials and dentin. Statistical analysis: Mann Whitney test was used for clinical evaluation, while t-test and ANOVA were used for laboratory evaluation. The significance level was set at P ≤ 0.05. Results: Clinically:The overall clinical outcome showed no significant difference between both groups in all evaluated criteria (p>0.05). Laboratory: Activa showed higher values than Vitremer in all tested groups and the differences were significant (p<0.05) Conclusion: Activa recorded better scores than Vitremer in nearly all tested clinical criteria but without significant differences between them during recall-time intervals. But, the laboratory differences in all tested groups were significant.

Physical Properties of Newly Developed Resin Modified Glass Ionomer Cement with Synthesised Coumarin Derivatives

“…There are several advantages possessed by RMGIC such as excellent biological properties, chemically bonded to the enamel, and has a coefficient of thermal expansion that is close to that of tooth structures (Pinto-Sinai et al 2018). In addition, RMGIC had shown an improvement in mechanical properties, reduce its setting time, and attenuate its sensitivity to moisture compared to conventional GIC (Beltagy & Elhatery 2018). Nevertheless, both RMGIC and conventional GIC shared a unique property of fluoride releasing materials due to their fluoroaluminasilicate content.…”