Influence of a Bleaching Agent on the Color Stability of Indirect Composite Resins Immersed in Dyes

This study aimed to evaluate the effect of a bleaching agent on the color of extrinsically pigmented indirect composite resins. Samples of five resins (Adoro, Resilab, Cristobal, Sinfony, Epricord) were manufactured and divided into five groups: red wine, coffee, orange juice, Coca-Cola, and artificial saliva (control). The stained samples were immersed in a 38% hydrogen peroxide solution for 30 min per week, over three weeks. Color readings were performed at the initial state (L0), after 21 days of dye immersion (ΔE1, L1), and after 7 (ΔE2, L2), 14 (ΔE3, L3), and 21 days (ΔE4, L4) of bleach immersion. Data were subjected to ANOVA and Tukey’s honestly significant difference (HSD) test (α = 0.05). The color alteration was greater in ΔE1, regardless of color solution, indicating extrinsic pigmentation. The Resilab group exhibited greater ΔE1 values than the other resins. The bleaching agent promoted bleaching action on the surfaces of the materials studied, removing the previously impregnated pigments.

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Effect of an Optical Whitening Toothpaste on Color Stability of Tooth-Colored Restorative Materials

European Journal of Dentistry ◽

10.1055/s-0040-1705071 ◽

2020 ◽

Vol 14 (01) ◽

pp. 085-091

Author(s):

Sedighe Sadat Hashemikamangar ◽

Farnoosh Hoseinpour ◽

Nazanin Kiomarsi ◽

Mehrzad Gholampour Dehaki ◽

Mohammad Javad Kharazifard

Keyword(s):

Statistical Analysis ◽

Color Change ◽

Color Stability ◽

Composite Resins ◽

Time Points ◽

Color Changes ◽

Honestly Significant Difference ◽

Significant Difference ◽

Resin Modified Glass Ionomer ◽

Composite Samples

Abstract Objectives This study aimed to assess the effect of an optical whitening toothpaste on color stability of microhybrid, nanofilled, and microfilled composite resins and resin-modified glass ionomer (RMGI) cement in comparison of two other toothpastes. Materials and Methods In this experimental study, disc-shaped composite samples were fabricated. The samples were then polished using silicon carbide papers. Twenty-seven samples of each material were fabricated and subjected to colorimetry using a spectrophotometer. Each group of material was then divided into three subgroups for the application of conventional whitening and whitening containing blue covarine toothpastes. One operator brushed the samples with an electric soft toothbrush with circular motion twice a day, each time for 30 seconds. Colorimetry was performed at 0, 1, 7, 30, and 90 days. Statistical Analysis Two-way analysis of variance (ANOVA), one-way ANOVA, and Tukey’s honestly significant difference (HSD) test were used for statistical analysis. Results The interaction effect of type of restorative material and time on ∆E was not significant at baseline or 1 day (p > 0.05). The effect of type of toothpaste on ∆E was not significant at baseline or 1 day (p = 0.78) but the effect of type of material was significant (p < 0.05). The toothpastes had significantly different effects on ∆E of Z250 at all time points (p < 0.05) except for ∆E0–30 (p = 0.106). The toothpastes had significantly different effects on ∆E of Z350 and Gradia at all time points (p < 0.05). The same was true for RMGI except for ∆E0–7 (p = 0.43) and ∆E0–90 (p = 0.52). The majority of color changes caused by toothpastes were not clinically perceivable (∆E < 3.3), except for ∆E0–90 by the whitening toothpaste (∆E = 9), ∆E0–90 by the conventional toothpaste for Z350 (∆E = 3.9), and ∆E0–1 by the whitening toothpaste for RMGI (∆E = 3.7). Conclusion The color change of all composite samples was not clinically perceivable (<3.3) at all time points, which shows that the tested toothpastes do not cause a significant change in color of composite materials.

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Bleaching Agent Action on Color Stability, Surface Roughness and Microhardness of Composites Submitted to Accelerated Artificial Aging

European Journal of Dentistry ◽

10.1055/s-0039-1698871 ◽

2011 ◽

Vol 05 (02) ◽

pp. 143-149 ◽

Cited By ~ 8

Author(s):

Raphael Mendes Bezerra Rattacaso ◽

Lucas de Fonseca Roberti Garcia ◽

Fabiano Gamero Aguilar ◽

Simonides Consani ◽

Fernanda de Carvalho Panzeri Pires-de-Souza

Keyword(s):

Surface Roughness ◽

Artificial Aging ◽

Artificial Saliva ◽

Color Stability ◽

Color Reading ◽

Bleaching Agent ◽

Significant Difference ◽

Knoop Microhardness ◽

Initial Color ◽

Daily Application

ABSTRACTObjectives: The purpose of this study was to evaluate the bleaching agent action on color stability, surface roughness and microhardness of composites (Charisma, Filtek Supreme and Heliomolar - A2) submitted to accelerated artificial aging (AAA). Methods: A Teflon matrix (12 x 2 mm) was used to fabricate 18 specimens (n=6) which, after polishing (Sof-Lex), were submitted to initial color reading (ΔE), Knoop microhardness (KHN) (50 g/15 s load) and roughness (Ra) (cut-off 0.25 mm) tests. Afterwards, the samples were submitted to AAA for 384 hours and new color, microhardness and roughness readings were performed. After this, the samples were submitted to daily application (4 weeks) of 16% Carbamide Peroxide (NiteWhite ACP) for 8 hours and kept in artificial saliva for 16 hours. New color, microhardness and roughness readings were made at the end of the cycle, and 15 days after bleaching. Results: Comparison of the ΔE means (2-way ANOVA, Bonferroni, P<.05) indicated clinically unacceptable color alteration for all composites after AAA, but without significant difference. Statistically significant increase in the KHN values after AAA was observed, but without significant alterations 15 days after bleaching. For Ra there was no statistically significant difference after AAA and 15 days after bleaching. Conclusions: The alterations promoted by the bleaching agent and AAA are material dependent. (Eur J Dent 2011;5:143-149)

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Effect of Chemical Degradation on Surface Roughness and on Color Stability of Micro hybrid and Nanofilled Composites

Journal of Health Sciences ◽

10.17921/2447-8938.2018v20n3p167-172 ◽

2018 ◽

Vol 20 (3) ◽

pp. 167

Author(s):

Ruchele Dias Nogueira ◽

Rosa Maria Pereira Moisés Barbosa Andrade ◽

Ailla Carla Rocha Acosta Lancellotti ◽

Regina Guenka Palma-Dibb ◽

Vinícius Rangel Geraldo-Martins

Keyword(s):

Surface Roughness ◽

Hybrid Composite ◽

Orange Juice ◽

Red Wine ◽

Clinical Success ◽

Artificial Saliva ◽

Color Stability ◽

Final Analysis ◽

Composite Resins ◽

Chemical Degradation

ResumoA resina composta é o material restaurador mais utilizado atualmente. Apesar de seu sucesso clínico, o material está sujeito a alterações em suas propriedades físicas, quando exposto ao meio bucal. O objetivo foi avaliar a influência da degradação química na estabilidade de cor e na rugosidade superficial de resinas micro-híbrida e nanoparticulada. Foram confeccionados 40 discos (6,0mm x 2,0mm) da resina composta micro-híbrida (Z250XT) e 40 da resina nanoparticulada (Z350XT). Após a análise da cor inicial e da rugosidade inicial, 10 discos de cada resina foram imersos em saliva artificial (Controle, pH=6,4), suco de laranja (pH= 3,4), refrigerante de limão (pH=2,9) e vinho tinto (pH=3,1), por 4 horas por dia (37ºC) durante 30 dias. Após, foram realizadas as leituras finais de cor e rugosidade. Os dados obtidos para a estabilidade de cor foram analisados pelo Teste de Kruskal-Wallis, seguido pelo Teste de Dunn (α=5%). Para a análise da rugosidade foi utilizado o Teste t para amostras pareadas (α=5%). O manchamento provocado pela saliva artificial, suco de laranja e refrigerante foi similar, mas foi estatisticamente diferente do manchamento produzido pelo vinho, em ambas as resinas testadas. O vinho produziu o mesmo grau de manchamento nas resinas micro-híbrida e nanoparticulada. Foi observado que o suco de laranja, o refrigerante e o vinho promoveram aumento da rugosidade superficial dos discos de resina. Diante disso, concluiu-se que o vinho alterou a cor de resinas compostas micro-híbrida e nanoparticulada, e que a rugosidade superficial dos discos de resina foi alterada por todas as bebidas utilizadas.Palavras chave: Resinas Compostas. Corantes. Cor.Abstract Composite resin is the most used restorative material. Despite its clinical success, it is susceptible to changes in its physical properties when exposed to the oral environment. The aim was to evaluate the influence of acidic beverages on the color stability and on the surface roughness of the nanofilled and micro hybrid composite. Forty discs (6.0mm x 2.0mm) of the micro hybrid composite (Z250XT) and 40 of the nanofilled composite (Z350XT) were manufactured. After the measurement of the initial color and the initial roughness, 10 discs of each composite were individually immersed in artificial saliva (control, pH = 6.4), orange juice (pH=3.4), lime soda (pH = 2.9) and red wine (pH = 3.1) during 4 hours per day at 37°C for 30 days. At the end of the experiment, the final analysis of color and surface roughness were performed. The data obtained for the color stability were analyzed by Kruskal-Wallis and Dunn’s test (α= 5%). For the analysis of the surface roughness, the t test for related samples was used (α= 5%). The color changes promoted by artificial saliva, orange juice and soda were similar, but they were statistically different from staining produced by wine, in both tested composites. Wine produced the same degree of staining in both composites. Orange juice, soda and red wine increased the surface roughness of the composite discs. It was concluded that red wine significantly changes the color of micro hybrid and nanofilled composites. Furthermore, all beverages increased the surface roughness of the composites tested in the study herein.Keywords: Composite Resins. Coloring Agents. Color.

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Effect of beverages with different alcoholic concentration on composite resins

Brazilian Dental Science ◽

10.14295/bds.2018.v21i2.1516 ◽

2018 ◽

Vol 21 (2) ◽

pp. 198

Author(s):

Laís Andrade La-Gatta ◽

Alexandre Marques de Resende ◽

Luís Felipe Marques de Resende ◽

Rafael Barroso Pazinatto ◽

Igor Do Carmo de Souza ◽

...

Keyword(s):

Red Wine ◽

Composite Resin ◽

Color Change ◽

Alcoholic Beverage ◽

Color Stability ◽

Composite Resins ◽

Alcoholic Beverages ◽

Distilled Water ◽

Significant Difference ◽

Color Composite

Objective: To evaluate if alcoholic beverages can cause color change in composite resins, if the alcoholic concentration influences this variation besides analyzing within the composite resins tested, which would present greater color stability when subjected to the experiment. Material and Methods: 90 specimens of three different composite resins (IPS Empress Direct, Grandio®So and Filtek Z350 XT) were immersed in distilled water (control group), red wine and vodka. The samples were 2 mm thick and 8 mm in diameter, photopolymerized for 20 s on each side, polished with sandpaper, silicon carbide tip and felt disc with prophylactic paste and immersed in distilled water at 37 °C for 24 h prior to subgrouping. For the evaluation of the color variation, the formula prioritized by the CIEL *a *b* system was used. Data were analyzed by ANOVA and Tukey’s test at 95% significance. Results: The lowest variations occurred with the Grandio®So resin when exposed to wine, and Filtek Z350 XT when exposed to vodka. There was a statistically significant difference between the groups in water (p < 0.01) and in red wine (p < 0.01), but not in vodka (p > 0.05). The soaking medium that most caused staining was red wine. Conclusion: Red wine was the drink that generated the highest staining in all the resins tested, vodka did not change color stability significantly, the alcoholic concentrations tested did not directly influence the color change and the composite resin Grandio®So presented greater color stability when exposed to red wine. KeywordsAlcoholic beverage; Color; Composite resin. KEY WORDS: Alcoholic beverage, color, composite resin.

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

Journal of Health Sciences ◽

10.17921/2447-8938.2019v21n5p512-517 ◽

2019 ◽

Vol 21 (5) ◽

pp. 512-517

Author(s):

Fernando Zurlo Dellazzana ◽

Camila Silva Rodrigues ◽

André Mallmann ◽

Letícia Borges Jacques

Keyword(s):

Glass Ceramic ◽

Red Wine ◽

Color Change ◽

Resin Composite ◽

Contrast Ratio ◽

Glass Ceramics ◽

Color Stability ◽

Composite Resins ◽

Indirect Composite ◽

Color Composite

AbstractLittle 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. ResumoPouca 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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Evaluation of color stability of different temporary restorative materials

Revista de Odontologia da UNESP ◽

10.1590/1807-2577.0017 ◽

2015 ◽

Vol 44 (5) ◽

pp. 262-267 ◽

Cited By ~ 1

Author(s):

José Vitor Quinelli Mazaro ◽

Luiz Miguel Minani ◽

Adriana Cristina Zavanelli ◽

Caroline Cantieri de Mello ◽

Cleidiel Aparecido Araújo Lemos

Keyword(s):

Storage Time ◽

Color Change ◽

Artificial Saliva ◽

Color Stability ◽

Time Interval ◽

Acrylic Resins ◽

Significant Difference ◽

Restorative Materials ◽

Before And After ◽

Level Of Significance

AbstractIntroductionTemporary restorative materials are widely used, however, little is know about their color stability.Objectiveto evaluate the color stability of the following temporary restorative materials: acrylic and bis-acrylic resins after immersion in pigmenting solutions for different periods of storage.Material and methodFour materials were tested (Dêncor/Clássico, Protemp 4/3M ESPE; Structur 2 SC/Voco; Luxatemp AM Plus/DMG) and 30 test specimens (15 mm in diameter and 2 mm thick) per material were fabricated. They were divided according to the storage medium (artificial saliva, saliva + cola type soda, and saliva + coffee) and storage time intervals (2, 5, 7 and 15 days). Color measurements were made before and after immersions, with use of a spectrophotometer, by means of the CIE L*a*b* system. The data were analyzed by the analysis of variance and the Tukey Test, at a level of significance of 5%.ResultAcrylic resin presented greater color stability in comparison with bis-acrylic resins (p<0.001). When bis-acrylic resins were compared no significant difference was observed between the resins Structur and Luxatemp (p=0.767). As regards solutions tested, coffee showed the highest color change values (p<0.001), and the longer the storage time interval, the greater was the color change in all the temporary restorative materials analyzed (p<0.001).ConclusionAcrylic resin presented greater color stability in comparison with bis-acrylic resins (p<0.001). Coffee caused the greatest color change, and immersion time was determinant in color stability of the temporary materials analyzed.

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Evaluation of the color stability and surface roughness of dual-cure, bulk-fill composites

International Dental Research ◽

10.5577/intdentres.2021.vol11.suppl1.39 ◽

2021 ◽

Vol 11 (Suppl. 1) ◽

pp. 266-273

Author(s):

Zehra Şivgan Güner ◽

Behiye Bolgül ◽

Tacettin İnandı

Keyword(s):

Surface Roughness ◽

Color Stability ◽

Pediatric Dentistry ◽

Ease Of Use ◽

Composite Resins ◽

Distilled Water ◽

Significant Difference ◽

Cherry Juice ◽

Experimental Group ◽

Composite Samples

Aim: In recent years, tooth-colored, dual-cure, bulk-fill composite resins, which have attracted attention for their ease of use, constitute one of the latest developments in pediatric dentistry applications. This study aimed to evaluate the color stability and surface roughness properties of three different dual-cure, bulk-fill materials and one light-cure, bulk-fill composite material used in pediatric dentistry. Methodology: In this study, three different dual-cure, bulk-fill composites (Fill-Up, HyperFIL, Cention-N) and one light-polymerized bulk-fill composite (Reveal HD) were used. A total of 70 samples were obtained for surface roughness testing. The surface roughness testing was performed with a Hysitron TI 950 Triboindenter device. A total of 105 samples were obtained for the evaluation of color stability. Cherry juice, iced tea, and distilled water were used as solutions. Initial and final color measurements were made using a spectrophotometer. The color differences between measurements were recorded according to the CIEDE 2000 system. Results: The least surface roughness among the composite groups was observed in the light polymerized Cention-N composite samples in the experimental group. In the Fill-Up and Cention-N composite groups in the experimental group, the surface roughness of the samples left to self-polymerization and the samples polymerized with light showed a statistically significant difference (p < 0.05). Among the composite groups, the highest amount of coloring was observed in the Fill-Up composite samples, which were left to self-polymerization and kept in cherry juice in the experimental group. The least coloration among the composite groups was observed in the Cention-N composite samples polymerized with light and kept in distilled water. Conclusion: Based on this information, a decrease in surface roughness and an increase in color stability can be expected due to self-polymerization and the light polymerization of dual-cured, bulk-fill composites. How to cite this article: Şivgan Güner Z, Bolgül B, İnandı T. Evaluation of the color stability and surface roughness of dual-cure, bulk-fill composites. Int Dent Res 2021;11(Suppl.1):266-273. https://doi.org/10.5577/intdentres.2021.vol11.suppl.39 Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

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Color Stability of Heat-Cured Denture Base Resins

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1088.519 ◽

2015 ◽

Vol 1088 ◽

pp. 519-525

Author(s):

Hua Li Huang ◽

Dan Feng ◽

Hai Huan Gong ◽

Ai Yang Song ◽

Song Zhu

Keyword(s):

Water Absorption ◽

Red Wine ◽

Color Change ◽

Artificial Saliva ◽

Color Stability ◽

Denture Base ◽

Color Changes ◽

Dental Resins ◽

Base Resin ◽

Storage Times

Heat-cured denture base resin is an important component in removable partial dentures and complete dentures, and has been widely used in the clinic. However, during long-term use, its appearance may be affected by varying degrees of color change, affecting the appearance and longevity of the dentures. In this study we examined the color changes and water absorption and solubility of dental base resins to investigate the color stability of four types of resin materials: New Century, Heraeus, Nissin and BASIS-HI. They were soaked in artificial saliva (as control), red wine, cola, coffee and tea separately at 37°C for 1, 4 or 12 weeks. Results are presented on which the color changes of dental base resin materials were associated with different denture base resins, soak solutions and storage times. We found that most of the dental resins became darker at prolonged immersion time. Heraeus resins showed more significant changes after soaking in red wine for 12 weeks, and its water absorption and solubility values were also greater than those of the other three types of resins. The color changes of New Century, Nissin and BASIS-HI soaked in the four solutions were relatively stable. The information obtained here will help optimize maintenance of dentures and also inform choice of denture materials.

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Evaluation of the effect of two commercially available non-alcoholic mouth rinses on the microhardness of composite material - An invitro study

10.12944/cdrj.01.o1.03 ◽

2019 ◽

Vol 1 (Issue 1) ◽

pp. 14-21

Author(s):

Reshma Rajasekhar ◽

Baby James ◽

Minimol K Johny ◽

Jose Jacob

Keyword(s):

Artificial Saliva ◽

Composite Resins ◽

Chemical Effect ◽

Mouth Rinses ◽

Significant Difference ◽

Nanohybrid Composite ◽

Group 5 ◽

Vicker’S Microhardness ◽

Posterior Restorations ◽

Group 1

Composites have been widely used for anterior as well as posterior restorations due to increased aesthetic demands. Composite restorations placed in patients oral cavity is subjected to masticatory load, pH changes and chemical effect due to mouthwashes, beverages, food etc and the detrimental effects associated with these challenges on the microhardness of composite has to be determined. The study was conducted to evaluate the effect of two commercially available non-alcoholic mouth rinses on the microhardness of micro-hybrid and nanohybrid composite resins. Forty disc-shaped composite specimens were made from each type of composite materials and were divided into 5 groups with 8 samples each, Group 1= Microhybrid+Chlorhex, Group2=Microhybrid + Hexidine, Group3= Nanohybrid + Chlorhex, Group4= Nanohybrid+ Hexidine, Group 5= Nanohybrid and Micro hybrid + artificial saliva(Control).The samples were immersed in mouthrinses for 24 hrs and microhardness was subsequently measured using a Vicker’s microhardness tester. There was no significant difference in microhardness values of tested composite resins in either mouth rinses when compared to composites immersed in artificial saliva. Non-alcoholic mouth rinses do not affect the microhardness of micro-hybrid and nanohybrid composites.

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Effect of Liquid Polishing System on Color Stability of Bleached Enamel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.804.141 ◽

2013 ◽

Vol 804 ◽

pp. 141-145

Author(s):

Xiu Lan Chen ◽

Huang Qin Chen

Keyword(s):

Red Wine ◽

Color Change ◽

Color Stability ◽

Control Groups ◽

Significant Difference ◽

Before And After ◽

Total Color Change ◽

Post Hoc ◽

And Control ◽

One Way Anova

The purpose of this study was to investigate the effect of liquid polishing system (BisCover) on color stability of the bleached enamel upon exposure to a staining agent-red wine. Forty specimens were prepared. They were divided into 2 groups and different procedures, including only bleaching with Opalescence PF (PF) or Opalescence regular (R) gels, and application of BisCover after blaeching (PF-B, R-B) were used. Unbleached specimens were served as control groups (control-1 and control-2). The specimens were stored for 48 h in red wine. The color of all specimens was measured before and after exposure with a spectrophotometer, and total color change (ΔE*) were calculated. The data were analyzed with a one-way ANOVA and the means were compared by Tukeys post hoc analysis (α=0.05). PF-B and R-B groups demonstrated significantly less color change than PF and R groups. the control-1 and control-2 groups had the least color change. No significant difference were observed between PF and R group. BisCover improved the color stability of bleached enamel in red wine.

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