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Materials 2017, 10(3), 300; doi:10.3390/ma10030300

The Effect of Different Storage Media on Color Stability of Self-Adhesive Composite Resin Cements for up to One Year

1
Department of Prosthodontics, Dental School, Ludwig-Maximilians-University Munich, Goethestrasse 70, 80336 Munich, Germany
2
Department of Biostatistics at Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Hirschgraben 84, 8001 Zurich, Switzerland
*
Author to whom correspondence should be addressed.
Academic Editor: Jorge de Brito
Received: 15 February 2017 / Revised: 10 March 2017 / Accepted: 11 March 2017 / Published: 16 March 2017
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Abstract

The aim of this study was to analyze the long-term color stability of eight self-adhesive composite resin cements (SACRCs) after storage in diverse media for up to one year. 480 discs (diameter: 12 mm/thickness: 1.0 ± 0.05 mm) were fabricated (n = 60/SACRC): (1) BeautyCem (BEA); (2) Bifix SE (BIF); (3) Clearfil SA Cement Automix (CLE); (4) RelyX Unicem 2 Automix (RXU); (5) SeT (SET); (6) SmartCem 2 (SMC); (7) SoloCem (SOC); and (8) SpeedCEM (SPC). After polishing, specimens were immersed in (a) red wine (RW); (b) curry-solution (CU); (c) cress-solution (CR); and (d) distilled water (DW) at 37 °C and measured after 7, 28, 90, 180, and 365 days for color differences (ΔE) and water absorption (WA). Non-aged specimens were used as baselines. After 365 days, all of the discs were polished and their ΔE was measured. Data were analyzed using Kolmogorov-Smirnov, partial-eta-squared/ηP2, 3-/1-way ANOVA with Tukey-HSD post-hoc test (α = 0.05). Significant differences occurred between all SACRCs for WA (p ≤ 0.003), except in RXU and in SET and in ΔE (p ≤ 0.002), except in SET and SPC. The significantly highest WA presented in SOC; the lowest showed in BEA. Significant ΔE differences and a decrease after polishing between all storage media were found (p < 0.001) with highest values for RW, followed by CU, CR, and DW. The lowest ΔE was measured for CLE, followed by SOC, BIF, RXU, BEA, SPC, SET, and SMC (p < 0.001) and increased significantly during aging. The highest ΔE decrease presented in BEA. SACRCs showed an increase in WA/ΔE within total aging time. Discoloration could not be removed completely by polishing. SACRCs need to be carefully selected for restorations in the esthetical zone with visible restoration margins. Polishing can significantly reduce the marginal discoloration. View Full-Text
Keywords: self-adhesive composite resin cements; curry solution; cress solution; red wine; distilled water self-adhesive composite resin cements; curry solution; cress solution; red wine; distilled water
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MDPI and ACS Style

Liebermann, A.; Roos, M.; Stawarczyk, B. The Effect of Different Storage Media on Color Stability of Self-Adhesive Composite Resin Cements for up to One Year. Materials 2017, 10, 300.

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