Purpose: The aim was to evaluate the effect of four acidic beverages on the roughness (Ra) and color change (ΔE) of two brands of artificial teeth and a heat-polymerized acrylic resin (HPAR) for use in a prosthetic base.
Materials And Methods: All materials were divided into 5 groups, according to the used acidic beverage (artificial saliva - control, red wine, orange juice, coke-based, and lemon juice-based soft drink). The immersion process was divided into two stages: T1 - immersion in the acidic solutions for 10 minutes for 14 days; T2 - after T1, the samples were immersed in grape juice for 14 days. The Ra of the samples was evaluated in a rugosimeter and the ΔE in a spectrophotometer, before and after the immersions. The analysis of variance of one (ΔE) and two factors (Ra) and Tukey were performed (α=.05).
Results: There was a statistical difference for roughness after immersion (T1) for Trilux and Tritone teeth, regardless of the acid solution. For Trilux teeth, all acid solutions increased Ra (<.05). For Tritone teeth, only the coke-based soft drink did not statistically change Ra. Grape juice (T2) altered Ra only of artificial teeth (<.05). The color was changed for all materials, after T1 and T2.
Conclusion: In general, the acidic solutions changed the Ra and ΔE of HPAR and artificial teeth after T1. The grape juice altered the roughness only of the artificial teeth, promoting a clinically acceptable color change in the materials.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7183855 | PMC |
| http://dx.doi.org/10.4047/jap.2020.12.2.55 | DOI Listing |
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