Comparison of the Color Stability of Silorane-Based with Methacrylate-Based Resin Composites after Accelerated Artificial Aging

Rezaei-Soufi, Loghman and Shirinzad, Mehdi and Mirtorabi, Maryam al sadat (2014) Comparison of the Color Stability of Silorane-Based with Methacrylate-Based Resin Composites after Accelerated Artificial Aging. Journal of Mashhad Dental School, 38 (3). pp. 211-220.

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Abstract

Introduction: Discoloration is one of the most common reasons for replacement of resin composites. The purpose of this study was to compare the color stability of three Methacrylate-based Resin Composites (Filtek Z250, Filtek Z250x, Filtek Z350xt) with Silorane-based Resin Composites (Filtek P90) after Accelerated Artificial Aging (AAA). Materials & Methods: In this in vitro study 56 composite discs were prepared (N=14). CIE L*a*b* parameters of each specimen were measured by a reflectance spectrophotometer after 24h and 384 h of AAA. Then Color change (ΔE) of each composite was calculated. Data were analyzed by one way ANOVA, Tukey and paired t-test at the significance level of 0.05. Results: ΔE values of Filtek Z250, Filtek Z250x, Filtek Z350xt and Filtek P90 were 7.77, 5.86, 8.95 and 8, respectively. One way ANOVA demonstrated a significant difference between ΔE values of composites (P˂0.001). Tukey’s test revealed that ΔE value of Filtek Z250xt was significantly lower than those of other composites (P˂0.05). Conclusion: Silorane and methacrylate based composites showed a color change more than the clinically acceptable level (ΔE˃3.3) after AAA. Filtek Z250xt showed the lowest color change and other composites showed relatively similar color change.

Item Type: Article
Subjects: WU Dentistry. Oral surgery
Divisions: Journals > Journal of Mashhad Dental School
Depositing User: jmds jmds
Date Deposited: 21 Sep 2017 12:54
Last Modified: 21 Sep 2017 12:54
URI: http://eprints.mums.ac.ir/id/eprint/1997

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