Surface quality and color stability of posterior composites in acidic beverages
Kantheti Sirisha, ChappidiM Meenakshi
Abstract
<b>Context:</b> Consumption of acidic beverages has been reported to alter the physical and esthetic properties of resin composites, which in turn can affect clinical success.<br><b>Aims:</b> This study aimed to evaluate the effect of acidic beverages on surface roughness and color stability of Filtek™ Bulk-Fill posterior restorative composite in comparison with Filtek P60 posterior restorative composite.<br><b>Settings and Design:</b> Ninety composite discs were used for surface change analysis and another ninety were used for color change analysis.<br><b>Materials and Methods:</b> Ninety Filtek P60 and Filtek Bulk-Fill composite discs were fabricated and divided into three subgroups according to the solutions – artificial saliva (control group), orange juice, and Coca-Cola<sup>®</sup> (test groups). The samples were immersed in each beverage for 10 min each day for 56 days. To measure the surface roughness, a profilometer was used, and the surface was qualitatively analyzed using a scanning electron microscope. A reflectance spectrophotometer was used for assessing the color change.<br><b>Statistical Analysis Used:</b> Two-way analysis of variance was used to compare the surface alteration and color change values between the two composite groups and their respective three subgroups. Tukey's multiple <i>post hoc</i> test was performed for pair-wise comparison.<br><b>Results:</b> Filtek P60 had exhibited higher color change than Filtek Bulk-Fill in all immersion solutions. Coca-Cola resulted in highest staining in both the composites.<br><b>Conclusions:</b> The surface roughness and color change of both composites increased significantly in acidic beverages and more in Coca-Cola. Bulk-fill exhibited better surface quality and color stability than P60.<br>