کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
3146288 | 1197205 | 2012 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: The effect of staining solutions on the color stability of provisional prosthodontic materials The effect of staining solutions on the color stability of provisional prosthodontic materials](/preview/png/3146288.png)
ObjectivesThe aim of this study was to evaluate the effects of staining solutions on the color stability of self-cure provisional resin materials.MethodsThe specimens were prepared for each of three auto-polymerized bis-acryl resin and auto-polymerized methyl methacrylate provisional resin material. The baseline color values were measured with a colorimeter according to the CIE L*a*b* color scale. After the first measurement (T0), specimens were placed in staining solutions (coffee, coca-cola, burn and distilled water for control group) and the other measurements were taken after 24 h (T1), 1 week (T2) and 4 weeks (T3).ResultsData were analyze statistically by (a) repeated measures (ANOVA), (b) one and two way ANOVA, and (c) Tukey HSD multiple comparison tests. At the 24 h immersion period, the post hoc analysis indicated that AccessCrown-coffee revealed the highest ΔE* values (4.4). At the second immersion period (1 week), Structur2 SC-coffee had the highest ΔE* values compared with other materials (5.4).ConclusionsThe degrees of discoloration were increased with immersion time. The methylmethacrylate resin was more resistant to discoloration than bis-acryl resins. After immersion for 30 days, the coffee solution resulted in unacceptable discoloration for all the tested materials.
Journal: Journal of Dentistry - Volume 40, Supplement 2, December 2012, Pages e41–e46