Effect of different tea solutions on the color stability of composite resins

Abstract

Aims: The aim of this study is to evaluate the color change of supra-nanophile (Estelite ? Quick) and nano-hybrid (Clearfil Majesty Esthetic) composites kept in three different brands of black tea (İstikan, Yellow Label and Çaykur) for three different periods (24 hours, 7 days and 28 days). Methods: Specially produced Teflon molds with an inner diameter of 10 mm, an outer diameter of 12 mm, and a thickness of 2 mm were used. 28 pieces of Tokuyama Estelite Sigma Quick composite material and 28 pieces of Kuraray Clearfil Majesty Esthetic composite material were placed in the molds and polimerized. All samples were polished and initial color measurements were taken. The samples were divided into three experimental groups (Istikan, Lipton yellow label, Çaykur tiryaki) and a control group (distilled water) (n=7). The samples were kept in this solution for 1 day, 7 days and 28 days, and at the end of the period, color measurements were measured with a spectrophotometer. Data were recorded according to the CIE Lab system. One-way analysis of variance (ANOVA) and Tukey test were used to analyze the data, and the Kruskal Wallis H test was used to make comparisons based on variables with more than two categories in the data. Results: It was observed that there was a statistically significant difference between the 24-hour and 7th-day coloration results of Tokuyama brand according to the beverages (p<0.05). According to the beverages, it was observed that there was a statistically significant difference between the 28-day coloration results of Tokuyama and Kuraray brands. Conclusion: In the supra-nanofilled and nanohybrid filler composite resins we used in our study; it was observed that the coloration increased as the residence time in the solution increased.