Color and opacity variations in three different resin-based composite products after water aging

Vichi, Alessandro; Ferrari, Marco; Davidson, C.L.

doi:10.1016/j.dental.2002.11.001

Cited by 314 publications

(334 citation statements)

References 17 publications

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“…This result is consistent with studies that described the water as a discoloring agent (Vichi et al, 2004). The color alteration caused by the energetic guaraná solution is probably due to its composition, which has caffeine and red pigment.…”

Section: Discussionsupporting

confidence: 92%

“…Greatest water sorption occurs on the first 7 days after initial teeth contact with a solution, and color alteration is associated to this phenomenon (Vichi et al, 2004). This explains why composite resin pigmentation was, in many cases, strongest on the first 7 days of contact with the coloring solution, stabilizing for many weeks or slowly progressing until the end of the contact (Prado & Porto, 2000;Teramito & Ferreira, 2005).…”

Section: Discussionmentioning

confidence: 99%

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Color change using HSB color system of dental resin composites immersed in different common Amazon region beverages

et al. 2009

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The purpose of this study is to evaluate in vitro the color stability of composite resins when exposed to beverages with high coloring contents from the Amazon region. 240 samples from four different composite brands (Natural Look, Z350, 4Seasons and Opallis) of hue A3 were fabricated using an acrylic matrix. The samples were stored in distilled water at 37°C for 24 hours. The initial color (T0) was registered using a Canon EOS Rebel XTi 10 mp camera, and then the samples were divided into four groups (n=15): G1 (coffee), G2 (açaí juice), G3 (energetic guaraná) and G4 (control -distilled water). The samples were exposed to solutions of DES (6hs) and RE (18hs) and placed in a double boiler under constant agitation, at 37°C for 30 days. The samples were immersed in the coloring solutions for 15 minutes daily. After 7, 15 and 30 days, new photographic registers were made (T1, T2 and T3). The images were analyzed using Corel PHOTO-PAINT 12 software to identify the colors through the HSB system. The Kruskal-Wallis and t tests (p<0.05) demonstrated significant differences in color (hue, saturation and brightness). The results revealed that none of the tested composites showed color stability when exposed to coloring solutions, and that the Amazon region beverages (açaí juice and energetic guaraná) showed to be less coloring than coffee. KEYWORDS:Composite Resins, Coloring Agents, Color Perception Tests. Alteração de cor de resinas compostas imersas em diferentes bebidas comuns da região Amazônica, utilizando o sistema de cor HSB RESUMOEste estudo propôs avaliar in vitro a estabilidade de cor de alguns compósitos quando expostos a bebidas da Região Amazônica com alto teor de corante. Foram confeccionados 240 corpos de prova (CP) de quatro resinas (Natural Look, Z350, 4Seasons e Opallis) no matiz A3 utilizando uma matriz de acrílico. As amostras foram armazenadas em água deionizada a 37°C por 24 horas. A cor inicial das resinas (T0) foi registrada utilizando a máquina Canon EOS Rebel XTi 10Mp, e em seguida os CP foram divididos em 4 grupos (n=15): G1 (café), G2 (suco de açaí), G3 (guaraná energético) e G4 (controle -água destilada). Os CP foram submetidos às soluções DES (6hs) e RE (18hs) e colocados em banho-maria, sob constante agitação, à temperatura de 37°C durante 30 dias. Diariamente os corpos de prova foram imersos nas soluções corantes durante 15 minutos. Após 7, 15 e 30 dias realizaram-se novos registros fotográficos (T1, T2 e T3). As imagens foram analisadas pelo programa Corel PHOTO-PAINT 12 para a identificação das cores através do sistema HSB. O teste Kruskal-Wallis e teste t (p<0,05) demonstraram que a alteração de cor (matiz, saturação e brilho) indicou diferenças significantes. Foi concluído que nenhuma das resinas testadas apresentou estabilidade de cor quando em contato com as soluções corantes, e que as bebidas da região Amazônica (suco de açaí e guaraná energético) demonstraram ser menos colorantes que o café.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Color change using HSB color system of dental resin composites immersed in different common Amazon region beverages

et al. 2009

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“…This glass ceramic structure should provide optimal stability 25,26) . Therefore, the staining susceptibility of AT may be related to the type of filler, the type of resin and the type of staining agent 27) . This result is in agreement with other studies that have concluded that nanocomposites undergo a greater color change than microhybrid composites after staining.…”

Section: Discussionmentioning

confidence: 99%

Effect of different beverages on the color stability and degree of conversion of nano and microhybrid composites

et al. 2013

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This study sought to evaluate the effects of different staining solutions on the colour stability of nanocomposites compared with micro hybrid resin and to evaluate the degree of conversion of these two materials. Two different shades of two different composites were cured in polytetraflouroethylene disk rings. Coffee, tea and cola drinks were used as staining solutions, and distilled water was used as a control. Data were statistically analysed using a paired T-test with a significance level of 5%. Nano composite showed the highest degree of conversion (DC) values based on calculation of the bonded and free carbonyl peak intensities in the spectrum. The colour analysis showed that nanohybrid had the highest ΔE values when exposed to coffee solutions; they showed less color stability despite having a higher degree of conversion. Nano resin composite showed significantly higher discoloration than microhybrid composite.

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“…Restoration polishing is particularly important in order to delay the discoloration and aging processes of the composite. Higher smoothness and less porosity reduce the adherence of agents responsible for changing the color of composites, such as dental biofilm, food colorants, tobacco, and others (5). The use of mouthrinses, such as chlorhexidine, does not show a high importance on color stability (4,6).…”

Section: Introductionmentioning

confidence: 99%

Color stability of composites subjected to accelerated aging after curing using either a halogen or a light emitting diode source

et al. 2007

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The purpose of this study was to evaluate, in vitro, the color stability of three composite resins of two different shades (A3 and C3) cured with either a quartz tungsten halogen (QTH) or a light emitting diode (LED) source. Forty specimens (20 x 2 mm) were prepared for each composite (Tetric Ceram ® , Heliomolar ® and Esthet-X ® ), being 20 for each shade. In each group, 10 specimens were light-cured using the QTH unit and 10 with the LED source. The shade of the materials was evaluated before and after submitting the specimens to artificial accelerated aging (4 h UV-B/4 h condensing vapor), using a reflection spectrophotometer. ΔE means were calculated and analyzed statistically by 2-way ANOVA and Tukey's test at 5% significance level. Both A3 and C3 shades of Esthet-X composite resin showed the lowest color change when cured with the QTH light, while Tetric C3 cured with the QTH light showed the highest color change.

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Color and opacity variations in three different resin-based composite products after water aging

Cited by 314 publications

References 17 publications

Color change using HSB color system of dental resin composites immersed in different common Amazon region beverages

Color change using HSB color system of dental resin composites immersed in different common Amazon region beverages

Effect of different beverages on the color stability and degree of conversion of nano and microhybrid composites

Color stability of composites subjected to accelerated aging after curing using either a halogen or a light emitting diode source

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