Color Difference In Composite Material After Exposure To Hot Drinks Using Spectrophotometer
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Abstract
Background: Color stability is a key factor in the effectiveness of composite resin restorations. However discoloration is still a concern in composite resin restoration.
Objective: The aim of the study is to evaluate the effect of different hot drinks on the color stability of microhybrid and nanohybrid composite materials using a spectrophotometer.
Materials and Methods:A total of 80 composite resin samples were prepared using microhybrid and nanohybrid composite materials (40 microhybrid and 40 nanohybrid. The samples were immersed in four different media: milk, tea, coffee, and distilled water. Color measurements were recorded before and after immersion using a Konica Minolta CM-5 spectrophotometer based on the CIE L*a*b* color system. The color difference (ΔE*ab) was calculated to assess the degree of discoloration.
Results: All composite samples exhibited a change in color after exposure to hot drinks. Coffee caused the highest color change, followed by tea, milk, and distilled water. Nanohybrid composites showed greater color alteration compared to microhybrid composites.One nanohybrid composite sample immersed in coffee (N3) demonstrated the highest color change (ΔE*ab = 3.01), approaching the clinically unacceptable threshold.
Conclusion: Hot beverages significantly affect the color stability of composite resin restorations. Coffee produced the maximum discoloration. Nanohybrid composites were more susceptible to color change than microhybrid composites. Dietary habits should be considered when selecting restorative materials for esthetic regions.
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