Optical Properties of a Glass Ceramic and an Indirect Resin Composite: Effects of Polishing and Staining

Autores

  • Fernando Zurlo Dellazzana Federal University of Santa Maria, Stricto Sensu Graduate Program in Dental Sciences, RS, Brazil.
  • Camila Silva Rodrigues Federal University of Santa Maria, Stricto Sensu Graduate Program in Dental Sciences, RS, Brazil.
  • André Mallmann Federal University of Santa Maria, Stricto Sensu Graduate Program in Dental Sciences, RS, Brazil.
  • Letícia Borges Jacques Federal University of Santa Maria, Stricto Sensu Graduate Program in Dental Sciences, RS, Brazil.

DOI:

https://doi.org/10.17921/2447-8938.2019v21n5p512-517

Resumo

Abstract

Little information is available about the optical behavior of glass ceramics and indirect resin composites. This study aimed to evaluate if an indirect resin composite can present similar behavior of color stability and translucency to a glass ceramic after polishing and aging in staining beverage. Specimens of a dental ceramic (IPS e.max Ceram) and an indirect resin composite (SR Adoro) were made. Half the specimens of each material were polished with disc-shaped tips. Groups were divided according to aging media: distilled water or immersion in red wine for 20 min/day during 30 days. CIE L*a*b* coordinates were measured with a spectrophotometer at baseline and after 30 days of aging. Color change was calculated by CIEDE2000 and translucency was calculated by contrast ratio (CR). Statistical analysis were performed with ANOVA and Tukey tests. Aging in red wine caused perceptible color change in both materials. Polishing only increased color change of indirect composite when aged in red wine. Ceramic groups showed greater opacity than the composite in all measurements. The indirect composite remained more translucent and results showed that it is capable of presenting color stability similar to a ceramic. However, polishing seems to increase its color change.

 

Keywords: Ceramics. Color. Composite Resins. Dental Polishing.

 

Resumo

Pouca informação comparando o comportamento óptico de cerâmicas vítreas e resinas compostas indiretas estão disponíveis na literatura. O objetivo deste estudo foi avaliar se uma resina composta indireta pode apresentar comportamento semelhante a uma cerâmica vítrea em relação à estabilidade de cor e translucidez após polimento e envelhecimento em meio altamente pigmentante. Espécimes de uma cerâmica vítrea (IPS e.max Ceram) e uma resina composta indireta (SR Adoro) foram preparados. Metade dos espécimes de cada material foram polidas com pontas de polimento. Os grupos foram divididos conforme o meio de armazenamento: água destilada ou vinho tinto por 20 min/dia durante 30 dias. As coordenadas CIEL*a*b* foram medidas com espectrofotômetro previamente e após os 30 dias de armazenamento. A alteração de cor foi calculada pela equação CIEDE2000 e a translucidez foi calculada por razão de contraste. A análise estatística foi realizada pelos testes ANOVA e teste de Tukey. O armazenamento em vinho levou a uma alteração de cor perceptível nos dois materiais. O polimento apenas causou alteração de cor na resina composta indireta quando imersa em vinho tinto. A resina composta indireta manteve-se mais translúcida e os resultados mostraram que esse material é capaz de apresentar estabilidade de cor semelhante à cerâmica. No entanto, o polimento parece aumentar sua alteração de cor.

 

Palavras-chave: Cerâmica. Cor. Polimento Dentário. Resinas Compostas.

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Publicado

2019-12-20

Como Citar

1.
Dellazzana FZ, Rodrigues CS, Mallmann A, Jacques LB. Optical Properties of a Glass Ceramic and an Indirect Resin Composite: Effects of Polishing and Staining. J. Health Sci. [Internet]. 20º de dezembro de 2019 [citado 22º de dezembro de 2024];21(5):512-7. Disponível em: https://journalhealthscience.pgsscogna.com.br/JHealthSci/article/view/6911

Edição

v. 21 n. 5 (2019): Especial Odontologia

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Artigos

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