Chromatic stability of light-activated resin and heat-cure acrylic resin submitted to accelerated aging

Asal, Safa’a A.; Fahmy, Maha M.; Abdulla, Saeed M.

doi:10.1016/j.sjdr.2014.06.003

Cited by 4 publications

(3 citation statements)

References 25 publications

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“…Color changes that occurred in acrylic resin soaked in roselle tea based on the classification of color changes according to the National Bureau of Standards (NBS) is included in the category of appreciable color change (a color change that is quite large in the process of occurrence) with a range of ΔE values from 3.0 to 6.0. 23, 24 The second treatment group was the sample group steeped in black tea with an average color change value of 3.208. The average value of color change in acrylic resin soaked in a 20% concentration of black tea was the highest change value compared to the other two groups.…”

Section: Discussionmentioning

confidence: 99%

“…It is included in the category of noticeable color changes (color changes that need to be considered in the occurrence process) with a range of ΔE values from 1.5 to 3.0. 23, 24 The color changes in acrylic resin when immersed in roselle tea or steeping black tea occurred due to the movement of the steeping pigment towards the acrylic resin chain, absorbed through a diffusion mechanism. Diffusion is moving a solution from a high concentration to a low concentration.…”

Section: Discussionmentioning

confidence: 99%

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Colour Change of Hot Immersed Polymerized Acrylic Resin Steeped into Roselle Tea (Hibiscus sabdariffa) and Black Tea (Camellia sinensis)

Nilasari

Kristiana

Gunadi

et al. 2022

IDJ

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Steeping rosella tea and black tea are effective as denture cleaning agents as they contain flavonoids that can inhibit the growth of C. Albicans. Flavonoids in the brewing of rosella tea and black tea are found in pigment compounds, so when the acrylic resin is soaked in the steeping of roselle tea and black tea, it can cause discoloration.This study aims to compare the color changes of acrylic resin soaked in roselle tea and black tea with the same treatment. A total of 18 samples of acrylic resin were divided into three groups; six samples immersed in 20% concentrated roselle tea, six samples immersed in 20% concentration of black tea, and six samples immersed in steeping mineral water for 22 hours 30 minutes at room temperature. The research results' data were analyzed using the one-way Anova test. Acrylic resin soaked in steeping roselle and black tea experienced a color change, and the largest color change occurred in acrylic resin soaked in black tea. The results showed that hot polymerized acrylic resin soaked in black tea had a greater color change than that of acrylic resin soaked in roselle tea.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Colour Change of Hot Immersed Polymerized Acrylic Resin Steeped into Roselle Tea (Hibiscus sabdariffa) and Black Tea (Camellia sinensis)

Nilasari

Kristiana

Gunadi

et al. 2022

IDJ

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“…The conventional acrylic resin and the cross-linked acrylic resin showed the different color change after the immersion in the food colorants (13), the higher molecular weight and complicate molecular structure as the UDMA-based resin showed greater color stability than the PMMA-based resin. (75) The additive fillers into the denture base resins also affected on the color stability. The fiber-reinforced heatpolymerized acrylic resins exhibited more susceptible to discoloration comparing to the conventional heat-polymerized denture base material, but the rubber-reinforced high impact heatpolymerized denture base material showed lower color change.…”

Section: The Factors Related To the Color Stabilitymentioning

confidence: 99%

Color stability, nanohardness and elastic modulus of denture base acrylic resins with various polymerization techniques

Losuphakarn

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The objective of this study was to evaluate color stability, nanohardness and elastic modulus of denture base acrylic resins with various polymerization techniques after storing in coffee, distilled water or dark chamber. Ninety disc-shaped (9X2 mm) specimens of heat-cured (TRX), microwave-cured (BTC) and light-cured (TRD) were fabricated, and randomly divided in three conditions (n=10). The color difference (DE*) was measured using a spectrophotometer at 1, 7, 28 and 56 days; The nanohardness and the elastic modulus were measured from three randomly selected of each group at day 1 and day 56 after color measurement. The repeated mixed analysis of variance following with Tukey's HSD multiple comparison and paired samples t-test were statistically analyzed at the confidence level of 95%. The interaction among material groups, storage media over the period of time were observed in the DE* (p<0.001). The DE* of the coffee storage group showed the greatest color change since day 7; TRD was greater color change than BTC and TRX both in coffee and distilled water. All specimens in coffee storage group were darker, less red and more yellow. Moreover, the interaction among three factors of nanohardness and elastic modulus showed no significant difference (p=0.103, 0.138). Those of TRX demonstrated the lowest nanohardness and elastic modulus while BTC and TRD showed almost similar. The nanohardness and the elastic modulus of coffee storage group showed the greatest reduction at 56-day storage, following by those in water.

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Comparative evaluation of the effect of three medications on the color stability of two commercially available acrylic resin denture teeth after thermocycling – An in vitro study

Pande

Kulkarni

Jaiswal

et al. 2019

Indian J Multidiscip Dent

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Chromatic stability of light-activated resin and heat-cure acrylic resin submitted to accelerated aging

Cited by 4 publications

References 25 publications

Colour Change of Hot Immersed Polymerized Acrylic Resin Steeped into Roselle Tea (Hibiscus sabdariffa) and Black Tea (Camellia sinensis)

Colour Change of Hot Immersed Polymerized Acrylic Resin Steeped into Roselle Tea (Hibiscus sabdariffa) and Black Tea (Camellia sinensis)

Color stability, nanohardness and elastic modulus of denture base acrylic resins with various polymerization techniques

Comparative evaluation of the effect of three medications on the color stability of two commercially available acrylic resin denture teeth after thermocycling – An in vitro study

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