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Home > Archives > Volume 20, No 8 (2022) > Article

DOI: 10.14704/nq.2022.20.8.NQ44945

Comparative Evaluation of Colour Changes In Composite Resin Restorative Material

Dr. Vatsala Srivastava, Dr. Ashwin Jawdekar

Abstract

Background: Anti-epileptic medicines can affect the colour stability of dental restorations. We evaluated colour changes caused by three commonly prescribed anti-epileptic formulations. Methodology: Fifty-four-disc samples, 18 for each restorative material: composite resin (COMP), resin reinforced glass ionomer (RRGI) and zirconia reinforced glass ionomer (ZRGI) were prepared. Specimens were divided into three groups (6 in each)-1: phenytoin syrup, 2: phenobarbitone syrup, 3: sodium valproate syrup. Samples were kept in 15 ml of syrups for 2 minutes twice daily and incubated in distilled water at 37° C. Colour-changes were observed at baseline, 1- and 3-month interval using a spectrophotometer. Results: COMP (∆E 18.3) showed the most colour-change at 1 month in phenytoin syrup group, ZRGI (∆E 12.3) in phenobarbitone syrup group while least colour-change was seen in RRGI (∆E 2.58) in phenytoin syrup group. RRGI (∆E 20.09) showed the most colour-change between 1 and 3months in phenytoin syrup group, ZRGI (∆E 9.53) in phenobarbitone syrup group while least colour-change was seen in COMP (∆E 2.32) in sodium valproate syrup group. RRGI (∆E 20.53) showed the most colour-change between baseline and 3 months in phenytoin syrup group, COMP (∆E 17.36) in phenytoin syrup group whereas the least colour-change was seen in ZRGI (∆E 3.88) in sodium valproate syrup group. The differences were statistically significant. Conclusion: Colour stability when assessed at the end of 1 month was found to be most in resin reinforced glass ionomer followed by zirconia reinforced glass ionomer and least in composite resin. When assessed between at the end of third month, most colour stability was seen in composite followed by zirconia reinforced glass ionomer and least in resin reinforced glass ionomer. Over all at the end of our study most colour stability was seen in zirconia reinforced glass ionomer followed by composite and least in resin reinforced glass ionomer.

Keywords

restorative material, food colourants, aesthetics, colour change, staining, colour stability, Zirconia reinforced glass ionomer cement, glass ionomer cement, composite

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