Citation Information :
Akkal O, Yilmaz ZS. Color Changes of Restorative Materials with Different Surface Finishing Processes Applied and Kept in Different Solutions. Int J Prosthodont Restor Dent 2020; 10 (3):115-121.
Aim: Investigation of color changes of restorative materials with different surface finishing processes applied and kept in different solutions.
Materials and methods: Totally 240 rectangular prism specimens were used in this study. Specimens were produced by four different restorative materials (two composites, lithium disilicate ceramic and zirconia) and each group was randomly divided into three groups. The three different surface finishing processes were applied to the specimens, and again, each group was randomly divided into four groups (n = 5). The initial color measurements were performed by spectrophotometer and recorded, after that the specimens were kept in four different solutions for a total of 28 days. The first 7- and 28-day color measurements of the specimens were made by spectrophotometer and recorded. Data were analyzed with Kruskal–Wallis and Tamhane's T2 test.
Results: There was a statistically significant difference between the discolorations of the restorative materials (p < 0.001) and was no statistical difference between the different polishing processes (p > 0.05) during all periods. Although there was a statistically significant difference between the discolorations during 0–7 days and 7–28 days (p < 0.001), there was no statistically significant difference between the discolorations during 0–28 days (p > 0.05).
Conclusion: During 0–28 days of investigations, different solutions cause a color change in restorative materials, and surface polishing processes are of no importance in this case.
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