Original scientific paper
https://doi.org/10.15644/asc56/1/3
Color Stability of Dental Composites after Immersion in Beverages and Performed Whitening Procedures
Samra Korać
orcid.org/0000-0001-7842-7299
; Department of Restorative Dentistry with Endodontics, Faculty of Dental Medicine, University of Sarajevo, Bosnia and Herzegovina
Muhamed Ajanović
; Department of Prosthodontics, Faculty of Dental Medicine, University of Sarajevo, Bosnia and Herzegovina
Aida Džanković
; Department of Restorative Dentistry with Endodontics, Faculty of Dental Medicine, University of Sarajevo, Bosnia and Herzegovina
Alma Konjhodžić
; Department of Restorative Dentistry with Endodontics, Faculty of Dental Medicine, University of Sarajevo, Bosnia and Herzegovina
Lajla Hasić-Branković
; Department of Restorative Dentistry with Endodontics, Faculty of Dental Medicine, University of Sarajevo, Bosnia and Herzegovina
Alma Gavranović-Glamoč
; Department of Prosthodontics, Faculty of Dental Medicine, University of Sarajevo, Bosnia and Herzegovina
Irmina Tahmiščija
; Department of Restorative Dentistry with Endodontics, Faculty of Dental Medicine, University of Sarajevo, Bosnia and Herzegovina
Abstract
Objectives: The study aimed to compare the color stability of two different light-cured composites after immersion in three liquids and the effectiveness of 16% carbamide peroxide (CP) in removing the discoloration. Material and methods: Color stability of a microhybrid (Z250, 3M ESPE) and nanocomposite (Z550, 3M ESPE) was evaluated after immersion in instant coffee, tea, Coca-Cola, and deionized water as a control group (n=5). Samples were kept in liquids for four hours daily at 37°C for 30 days. Furthermore, 16% CP was applied for the following 14 days, simulating night whitening. A digital spectrophotometer was used for color measurement based on the CIEL*a*b* color coordinates. The color changes (∆E) were measured at baseline, after immersion in the beverages, and also after the teeth whitening procedure. Mixed and factorial ANOVA followed by Bonferroni’s posthoc test were used for statistical evaluation (p≤0.05). Results: Tested resin composites showed a color change over the acceptability threshold (ΔE*> 3.48) after immersion in coffee and tea. Nanocomposite reported a significant increase in discoloration in coffee after 30 days (p <0.05). The color of both materials significantly changed (p<0.05) along all three L*a*b* axes in coffee and tea to darker, yellow, and red. Whitening with 16% CP was effective in removing external discoloration in both examined composite materials. Conclusion: Coffee and tea induced clinically detectable color changes in dental composites tested, with cumulative effects. Whitening represents an efficient method for the removal of surface discoloration in composite restorations.
Keywords
Composite Resins; Coloring Agents; Coffee; Tea; Tooth Bleaching; Color; Teeth Bleaching; Beverages; Staining
Hrčak ID:
274081
URI
Publication date:
21.3.2022.
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