کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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3145159 | 1197047 | 2012 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Intrinsic and extrinsic discoloration of dimethacrylate and silorane based composites Intrinsic and extrinsic discoloration of dimethacrylate and silorane based composites](/preview/png/3145159.png)
ObjectiveThe purpose of this study was to evaluate the intrinsic and extrinsic color change of dimethacrylate and silorane-based composites.Materials and methodsFive contemporary composites were included within the study (Filtek LS Low Shrink Posterior Restorative [SIL], Filtek SupremeXT [SPR], Filtek Z250 [Z25], Filtek P60 [P60], and Admira [ADM]). Twenty-five specimens (8-mm diameter, 1.5-mm thickness) were prepared for each composite. After baseline color measurements were taken, specimens were immersed in 4 staining solutions (red wine, coffee, cola, and tea) or distilled water (n = 5). After a 24-h and 1-month immersion, the color values of each specimen were remeasured and the color change values (ΔEab*) were calculated. Statistical analyses were evaluated by one-way ANOVA and Tukey HSD test.ResultsAmongst the solutions, red wine had the highest ΔEab* value in all the composite restoratives. After the final measurement, ADM exhibited the lowest discoloration, whereas SPR exhibited the highest color change. Additionally, the color change for SIL after 1 month in distilled water was higher than the clinically accepted cut-off of 3.3. This change was correlated with an increasing L value according to the multiple regression analysis.ConclusionAll of the restorative materials used in this study were susceptible to staining by commonly consumed beverages drinks, especially red wine and coffee; however, in water, only SIL became whiter with time.
Journal: Journal of Dentistry - Volume 40, Supplement 1, July 2012, Pages e57–e63