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Influence of Visible-light Exposure on Colour Stability of Current Dual-curable Luting Composites by Y. Koishi; N. Tanoue; M. Atsuta; H. Matsumura is a Dentistry article available to read on EtoBox.

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This study was conducted to evaluate influence of visible‐light exposure on colour stability of dual‐curable luting composite. Using six dual‐curable luting composites [Bistite II (BI), Clapearl DC (CL), Dicor Light Activated Cement (DI), G‐Cera Cosmotech II (GC), Lute‐It (LU) and Variolink II (VA), disk specimens were prepared with the following two methods: (i) dual‐cured specimens, exposure with visible‐light from a photo‐curing unit for 120 s and (ii) chemical‐cured specimens, chemically cured without exposure. Five specimens were produced for each material and curing mode. After 24 h, all specimens were immersed in distilled water at 37 °C for 24 weeks, during which colour accuracy was measured with a dental colorimeter. The colours characterized in the Commission Internationale d'Eclairage (CIE) __L__\*__a__\*__b__\* colour space were first determined 24 h after preparation (baseline colour evaluation), and again after 1, 2, 3, 4, 8, 12, 16 and 24 weeks. The colour difference (Δ__E__\*) values between 24 h and the other immersion periods were calculated, and then analysed by repeated measure analysis of variance (ANOVA). In addition, the Δ__E__\* values after 24 weeks for dua

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Author

Y. Koishi; N. Tanoue; M. Atsuta; H. Matsumura

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0305-182X)

Published

2002

Language

EN

Field

Dentistry (Health Sciences)