Effect of acidic beverages on surface roughness and color stability of artificial teeth and acrylic resin
Bitencourt Sandro Basso, Catanoze Isabela Arague, da Silva Emily Vivianne Freitas, dos Santos Paulo Henrique, dos Santos Daniela Micheline, Turcio Karina Helga Leal, Guiotti Aimee Maria,
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( Bitencourt Sandro Basso ) - Sao Paulo State University School of Dentistry Department of Dental Materials and Prosthodontics
( Catanoze Isabela Arague ) - Sao Paulo State University School of Dentistry Department of Dental Materials and Prosthodontics
( da Silva Emily Vivianne Freitas ) - Sao Paulo State University School of Dentistry Department of Dental Materials and Prosthodontics
( dos Santos Paulo Henrique ) - Sao Paulo State University School of Dentistry Department of Dental Materials and Prosthodontics
( dos Santos Daniela Micheline ) - Sao Paulo State University School of Dentistry Department of Dental Materials and Prosthodontics
( Turcio Karina Helga Leal ) - Sao Paulo State University School of Dentistry Department of Dental Materials and Prosthodontics
( Guiotti Aimee Maria ) - Sao Paulo State University School of Dentistry Department of Dental Materials and Prosthodontics
Abstract
PURPOSE: The aim was to evaluate the effect of four acidic beverages on the roughness (Ra) and color change (¥ÄEab) 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 ¥ÄEab in a spectrophotometer, before and after the immersions. The analysis of variance of one (¥ÄEab) and two factors (Ra) and Tukey were performed (¥á=.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 (P<.05). For Tritone teeth, only the coke-based soft drink did not statistically change Ra. Grape juice (T2) altered Ra only of artificial teeth (P<.05). The color was changed for all materials, after T1 and T2.
CONCLUSION: In general, the acidic solutions changed the Ra and ¥ÄEab 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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Acrylic resins; Artificial teeth; Color; Physical properties; Surface analysis
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