Color stability of denture base acrylic resins in three food colorants

Hersek, Nur; Canay, Énay R.; Uzun, Gülay; Yildiz, Patih

doi:10.1016/s0022-3913(99)80001-8

Cited by 97 publications

(110 citation statements)

References 16 publications

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“…27,28 Moreover, the components used for chemical activation in addition to thermal activation, contained in the short-cycle resins, may be responsible for the results shown by the QC resin. 29 These results are in agreement with those by Hersek et al, 20 who evaluated the color stability of acrylic resins in three colorants used in food and verified that LU followed by QC presented the greatest color changes.…”

Section: Discussionsupporting

confidence: 89%

“…1,[20][21][22]29 The dark pigment of W and its low pH can cause drastic staining, negatively affecting the surface integrity by softening the matrix. 20 In this study, only OC did not show a statistically significant color change when immersed in W (Table 6). Similarly, Imirzalioglu et al 2 evaluated the pigmentation ability of acrylic resins when immersed in coffee, tea, and nicotine and verified visual color changes in all samples after immersion in dye solution.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, extrinsic factors such as thermal changes, stain accumulation, artificial dyes used in food, cleaning procedures, and handling by the patient can also cause discoloration. 2,6,[11][12][13][14] It has been reported that thermocycling 1,14,15 and contact with mouthwashes [16][17][18][19][20] and beverages 15,[20][21][22] influence the color change of resin. Thus, oral hygiene and eating habits must be considered in order to preserve most of the acrylic resin properties, such as color stability, hardness, and durability, among others.…”

Section: Introductionmentioning

confidence: 99%

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Effect of different solutions on color stability of acrylic resin-based dentures

et al. 2013

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The aim of this study was to evaluate the effect of thermocycling and immersion in mouthwash or beverage solutions on the color stability of four different acrylic resin-based dentures (Onda Cryl, OC; QC20, QC; Classico, CL; and Lucitone, LU). The factors evaluated were type of acrylic resin, immersion time, and solution (mouthwash or beverage). A total of 224 denture samples were fabricated. For each type of resin, eight samples were immersed in mouthwashes (PlaxColgate, PC; Listerine, LI; and Oral-B, OB), beverages (coffee, CP; cola, C; and wine, W), and artificial saliva (AS; control). The color change (∆E) was evaluated before (baseline) and after thermocycling (T 1 ), and after immersion in solution for 1 h (T 2 ), 3 h (T 3 ), 24 h (T 4 ), 48 h (T 5 ), and 96 h (T 6 ). The CIE Lab system was used to determine the color changes. The thermocycling test was performed for 5000 cycles. Data were submitted to three-way repeated-measures analysis of variance and Tukey's test (p < 0.05). When the samples were immersed in each mouthwash, all assessed factors, associated or not, significantly influenced the color change values, except there was no association between the mouthwash and acrylic resin. Similarly, when the samples were immersed in each beverage, all studied factors influenced the color change values. In general, regardless of the solution, LU exhibited the greatest ∆E values in the period from T 1 to T 5 ; and QC presented the greatest ∆E values at T 6 . Thus, thermocycling and immersion in the various solutions influenced the color stability of acrylic resins and QC showed the greatest color alteration.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of different solutions on color stability of acrylic resin-based dentures

et al. 2013

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“…L* represents the value of an object, ranging from white at the top (100) and black at the bottom (0); a* and b* are chromaticity coordinates along the red-green and yellow-blue axes, respectively. [24][25][26][27] The ΔE value represents relative color changes that an observer might report when evaluating aesthetic restorative materials. In dentistry, it has been reported that values of ΔE in the range 2-3 were just perceptible 28 and that ΔE of 3.3 is the critical value for visual perception.…”

Section: Discussionmentioning

confidence: 99%

Effects of Carbamide Peroxide on the Staining Susceptibility of Tooth-colored Restorative Materials

Yu¹,

Pan²,

Yuan³

et al. 2009

Operative Dentistry

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SUMMARYThis study investigated the effects of an at-home bleaching gel containing 15% carbamide peroxide on the susceptibility of tooth-colored restorative materials to different staining solutions. The tooth-colored restoratives used in this study were a nano resin composite (Filtek Z350), a packable resin composite (Filtek P60), a polyacid-modified composite (Dyract AP) and a glassionomer cement (Ketac Molar Easymix). Each material was equally divided into two groups (n=34): the bleaching group and the control group. This study included two treatment segments. In the first part (days 1-14), the specimens of the bleaching group were bleached with 15% carbamide peroxide gels for eight hours daily, while the specimens in the control group were stored in deionized water. Subsequently, four specimens from each group were randomly selected for observation under an environmental scanning electron microscope. In the second part (days 15-42), the samples were not bleached. Instead, they were stored in five different kinds of solutions. Color measurements for each sample were taken at six different time periods using a spectrophotometer. The data was then analyzed using SPSS statistical software. After two- The staining susceptibility of esthetic restorative materials is significantly affected by the use of 15% carbamide peroxide. The effects of bleaching on the surface morphology and color of restorative materials are material dependent. INTRODUCTIONColor stability is considered an important factor in the success of an esthetic restoration.1-2 In the literature, color stability has been defined as the ability of a material to retain its color over a period of time and in a specified environment.2 To maintain excellent esthetic properties, tooth-colored restorative materials should have good color stability. It has been shown that both extrinsic and intrinsic factors contribute to color changes of restorative materials. Intrinsic factors influencing color changes involve chemical changes of the materials. The causes for such chemical discoloration have been identified as the oxidation of monomer or catalysts, exposure to various energy sources and immersion in water for a long period.3-6 Extrinsic factors influencing color changes include staining by adsorption or absorption of colorants, a result of contamination from exogenous sources, such as coffee, tea, other stain-producing beverages and colored solutions. [7][8][9] In recent years, many tooth-colored restorative materials have been introduced into the market. The staining susceptibility of these materials has been widely investigated.

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“…Three staining agents were prepared for this study: coffee with sugar (Jacobs Krönung, Kraft Foods Inc., Northfield, IL, USA), red wine (Gran Vino Merlot 2005, Santa Helena, Santiago, Chile), and a mix of sunset yellow and quinoline yellow 3% dyes (Unifine, Puttershoek, Netherlands) 34) . Distilled water was used as a control liquid.…”

Section: Staining Agentsmentioning

confidence: 99%

Effects of different food colorants and polishing techniques on color stability of provisional prosthetic materials

2010

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The main objective was to investigate the effects of different polishing techniques on the color stability of provisional prosthetic materials upon exposure to different staining agents by mimicking the oral environment in vitro. Fifty-six cylindrical specimens were prepared for each type of material: bis-acryl and light-polymerized composite resins, and methyl methacrylate-and ethyl methacrylatebased resins. The specimens were polished using seven different polishing techniques and then immersed in four different staining agents. Color was measured with a spectrophotometer before and after immersion, and color changes (ΔE) were calculated. The effects of the type of provisional material, polishing procedure, staining agent, and their interactions on color stability were significant (p<0.05). Amongst these factors, the staining agent exerted the strongest effect on color stability. Amongst the provisional materials tested, methacrylate-based resins exhibited the highest color stability irrespective of polishing technique and staining agent.

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Color stability of denture base acrylic resins in three food colorants

Cited by 97 publications

References 16 publications

Effect of different solutions on color stability of acrylic resin-based dentures

Effect of different solutions on color stability of acrylic resin-based dentures

Effects of Carbamide Peroxide on the Staining Susceptibility of Tooth-colored Restorative Materials

Effects of different food colorants and polishing techniques on color stability of provisional prosthetic materials

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