Comparative Evaluation of Surface Roughness of Resin- Modified Glass Ionomer and Glass Hybrid Restorative Materials Simulated by Tooth Brushing: An in-Vitro Study

Objective: Tocompare the effect of tooth brushing on surface roughness Resin-Modified Glass Ionomer Cement (RMGIC; GC Gold label 2LC Light Cured Universal Restorative) and Hybrid (GH; EQUIA SYSTEM- Forte™ Fil Coat) restorative material at 1- 3-months interval simulated by brushing. Material Methods: RMGIC GH specimens (20 each) were prepared according to manufacturer instructions in 10mm × 2 mm dimensions using a mylar strip. A specially designed toothbrush simulator was used along with Oral B Pro 2000N powered Colgate Total dentifrice (Colgate-Palmolive India limited; Relative dentin abrasivity - RDA:70- Low abrasive) perform strokes. Specimens subjected analysis before after baseline, 1, 3 months. Results: The intragroup comparison done repeated-measures ANOVA. Intergroup comparisons an independent sample t-test General Linear Model (ANCOVA). Surface increased from baseline through months both groups. mean group significantly higher than 1 3-months, respectively (p<0.001, <0.001, <0.001). Interaction between not significant (p=0.466). estimated marginal means (p=0.008). Conclusion: month toothbrushing protocol. exhibited lower all tested intervals.