EVALUATION OF COLOR STABILITY OF DIFFERENT HEAT CURE ACRYLIC DENTURE BASE RESINS IN FIVE DIFFERENT BEVERAGES: AN INVITRO SPECTROPHOTOMETRIC STUDY
Abstract
Aim: The purpose of this study was to evaluate the color stability of five commercially available heat cure acrylic denture base resins when submitted to five different beverages and food colorants used in Kashmir.
Materials and methods: Five testing solutions used for the study were turmeric solution, tea, saffron kehwa, namkeen tea and gurgur tea. Each solution was prepared and divided into five parts so that 5 specimens of each brand of acrylic resin were immersed into the specific solutions.The samples were tested for color change prior to immersion in test solutions subsequently after 1 month, 3 months and 6 months respectively.The samples were then tested for color reflectance using spectrophotometer.The data obtained were statistically analysed using ANOVA (analysis of variance) and student t test.
Results: All the brands of heat cure denture base acrylic resins tested in this study showed statistically significant color changes in the testing solutions. Ashvin showed highest color change variation in all the testing solutions followed by Pyrax, DPI, Trevalon and SR Triplex respectively. SR Triplex showed least discoloration in all the testing solutions.
Conclusion: All the 5 staining solutions showed more significant color change during the first 1 month of immersion in the respective solutions for all five heat cure denture base resins. The color change was not very appreciable between 3rd and 6th month of the experimental exposure for denture base acrylic resins.
