| Abstrakt: |
Dental composites constitute a cardinal preference amidst restorative materials for aesthetic restorative procedures. The increased demands have led to the evolution of dental composites, which has been marked by continual improvement in material science and has led to better clinical outcomes. The growing consumption of various beverages and their harmful effects on the mechanical performance of composite resins underscore the urgent need for further investigation. The outcome is to have a more resilient restorative material of choice. The aim of this study is to analyze the impact of beverages on the flexural strength of nanocomposites and microhybrid composites. In this study, two types of composite resins i.e., nanohybrid (Synergy D6, Coltene) from group 1 (n=30) and microhybrid (3M ESPE P60) from group 2 (n=30) were tested for comparative evaluation of flexural strength under the effect of beverages, i.e., distilled water (control group-subgroup 1), sprite (subgroup 2) and tea (subgroup 3). A total of 60 specimens (25mm × 2mm × 2mm) were prepared using a steel device. All composite specimens were immersed in distilled water (subgroup A1 and B1), sprite (subgroup A2 and B2) and tea (subgroup A3 and B3) for seven days. Therefore, the present study included two main groups with three subgroups each (n=10). Flexural strength was calculated with a universal testing machine under different conditions after seven days of immersion. Intergroup comparison of the flexural strength of two composite resins within each solution was done using an Independent t-test. Comparison of the flexural strength of each composite resin immersed in three different solutions was done using a one-way Analysis of Variance (ANOVA) test, followed by a post-hoc Tukey test for pairwise comparisons. Statistical significance was considered at p-value £ 0.05. A statistically significant difference in flexural strength was seen between two composites with higher flexural strength for 3M ESPE P60. The average flexural strength of nanohybrid composite in tea was 68.25 MPa, 71.44 MPa in Sprite and 72.56 MPa in distilled water. For the microhybrid composite, the mean flexural strength was 131.62 MPa in tea, 144.75 MPa in Sprite and 149.43 MPa in distilled water. In conclusion, Microhybrid composites showed better flexural strength as compared to nanohybrid composites in all beverages. [ABSTRACT FROM AUTHOR] |
