Properties of Self-Curing Denture Base Resins

Caul, Harold J.; Stanford, John W.; Serio, Andrew F.

doi:10.1016/s0002-8177(52)43007-x

Cited by 13 publications

(4 citation statements)

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“…(56,63) Other studies reported the greater color change of the light-polymerized acrylic resin than the heat-polymerized acrylic resin under immersion of the staining solutions (64), and the conventional heat-cured acrylic resins showed better color stability than the self-cured acrylic resins. (43) The color change of the microwavepolymerized acrylic resin was greater than that of normal and fast setting heat-polymerized acrylic resins (56); however, another study reported the similar color change of the microwave-cured and that of the heat-cured acrylic resins, but lower than self-cured resins. ( 65) Each polymerization method and its environment condition were affected on the amount of leached out monomer from the deeper layer or the surface of the denture base resins (66,67) and the greater degree of conversion in resin composite were reported the lower color change in water storage.…”

Section: The Factors Related To the Color Stabilitymentioning

confidence: 94%

“…(14,41,42) One study reported the approximately 80 % of the transverse strength, poor color stability and poor bond strength in the chemical-polymerized polymer comparing to the heat-polymerized polymer. (43) Visible light-polymerized polymers have been classified to be an alternative denture base material for the patient with hypersensitive to the MMA-based materials. The main composition is urethane dimethacrylate matrix (UDMA) with hydrophilic functional group similar to resin composite restorative material.…”

Section: Denture Base Acrylic Resinsmentioning

confidence: 99%

“…Color stability is one of the common used parameters to evaluate the esthetics and to indicate the aging and the damage of the denture acrylic resin material after a period of service. Several factors effect on the color stability including the polymerization methods (43,56,(63)(64)(65)(66)(67)(68), the staining solutions (9-13, 64, 65, 70-75), the immersion period (9-12, 64, 65, 70-72), the denture base resins composition (9,13,34,39,76,77) and the usage of denture cleansers. (9, 63, 64, 78) 1.…”

Section: The Factors Related To the Color Stabilitymentioning

confidence: 99%

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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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Section: The Factors Related To the Color Stabilitymentioning

confidence: 94%

Section: Denture Base Acrylic Resinsmentioning

confidence: 99%

Section: The Factors Related To the Color Stabilitymentioning

confidence: 99%

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

Losuphakarn

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“…CAUL; STANFORD; SERIO11 , investigaram as propriedades físicas e mecânicas de algumas marcas de resinas acrílicas PMMA auto-polimerizáveis, comercializadas na época como materiais indicados para bases de próteses totais. e posicionaram os diversos fios no seu terço inferior.…”

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Avaliação da resistência flexional, do módulo de elasticidade e do tipo de fratura de uma resina acrílica para restaurações provisórias - efeito de diversos reforços"

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um entusiasta nato, que soube reger com sabedoria e discernimento o seu orientado. A honestidade com que sempre me conduziu a palavra, aliada à extrema disponibilidade, tornaram a execução deste trabalho limpa e sem enganos. Meu aprendizado se estendeu a valores outros que a pura ciência. Agradeço com veemência a sua orientação e amizade. v Agradecimento Especial Aos amigos Rafa, Jeff e Renato, por amenizarem o fenômeno "saudade de casa". Conviver com vocês é um exercício afável de vida. A vocês, minha profunda gratidão e amizade. À família Martins Ferreira, Mariane, Felipão e Gabriel, pela acolhida, amizade e carinho que recebi de vocês. Meus sinceros agradecimentos. À minha família em Petrolina-PE, pela referência de uma vida simples e consistente. vi Agradecimentos Ao Prof.Dr.José Henrique Rubo, pela transmissão de conhecimentos e convívio. Pelo exemplo que é de uma pessoa serena e disciplinada.

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