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- W2143972661 abstract "In anterior tooth restoration composite, resin and porcelain are useful material. Composite resin is used for direct restoration, and prosthetic composition for indirect restoration. Commonly used all-ceramic restoration is aesthetic and less plaque accumulative. In addition, its color stability and wear resistance are high. However, stress accumulation over the time and difficulty in repair after setting in the mouth are disadvantageous. Composite resin is highly workable, can be repaired directly in the mouth. It is aesthetic, and the antagonist tooth wears out less. But its disadvantages are decreased color stability over time and a possibility of marginal leakage. Color stability of restorative materials is quite different between direct restorative composite resin and 2generation prosthetic composites. It also depends on experimental conditions such as accelerated aging and thermocycling. Composite resin showed a higher degree of discoloration than porcelain. In an experiment on the color stability of composite resin, SYNERGY Duo produced relatively satisfactory results. Compared to other dental porcelain, IPS Empress 2 is easy to observe fine bubbles in a process of polishing which is sometimes necessary before setting the restoration, and they might affect color stability. In the measurement of color change using the CIELAB color system, if ΔE is higher than 1, the discoloration is perceptible, and it is clinically acceptable up to 3.3. We measured color change and microhardness of five aesthetic restorative materials (IPS Empress 2-glazed, IPS Empress 2-polished, Sinfony, TESCERA ATL and SYNERGY Duo) before and after accelerated aging. Surface changes of the materials were observed using a scanning electron microscope (SEM). The objective of this study was to evaluate intrinsic color stability and affecting factors on the esthetic restorative materials when subjected to accelerated aging." @default.
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- W2143972661 date "2008-01-01" @default.
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- W2143972661 title "The color stability of aesthetic restorative materials resulting from accelerated aging" @default.
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- W2143972661 doi "https://doi.org/10.4047/jkap.2008.46.6.577" @default.
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