Color stability of indirect composite materials polymerized with different polymerization systems.

摘要: The purpose of the current study was to evaluate color stability two indirect composite materials (Sinfony and Pearleste) polymerized with different laboratory polymerization systems. Disk specimens were prepared their proprietary systems (Visio Pearlcure systems) or a metal halide light unit (Hyper LII) for 60, 120, 180 s. After storage at 37°C 24 h, immersed in either purified water tea. Color change between baseline evaluation after 4 weeks determined dental chroma meter (ShadeEye NCC) using black white backgrounds. CIE 1976 L * b values determined, they converted into ∆E ab values. value Sinfony material tea highest when Visio system. Pearleste not affected substantially by Among 12 groups Hyper LII units, 11 significantly lower than material. It can be concluded that stable against system unit. (J Oral Sci 51, 267-273, 2009)