Color stability of indirect composite materials polymerized with different polymerization systems.
Color stability of indirect composite materials polymerized with different polymerization systems.
复制标题
不同聚合体系聚合的间接复合材料的颜色稳定性。
DOI:
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复制
发表时间:
2009
影响因子:
1.9
通讯作者:
M. Nakazawa
中科院分区:
文献类型:
--
作者:
M. Nakazawa
The purpose of the current study was to evaluate the color stability of two indirect composite materials (Sinfony and Pearleste) polymerized with different laboratory polymerization systems. Disk specimens were prepared with their proprietary polymerization systems (Visio and Pearlcure systems) or with a metal halide light polymerization unit (Hyper LII) for 60, 120, and 180 s. After storage at 37 degrees C for 24 h, the specimens were immersed in either purified water or tea. Color change between baseline evaluation and after 4 weeks was determined with a dental chroma meter (ShadeEye NCC) using black and white backgrounds. CIE 1976 L(*)a(*)b(*) values were determined, and they were converted into DeltaE(*)(ab) values. The DeltaE(*)(ab) value of the Sinfony material immersed in tea was the highest when the material was polymerized with the proprietary Visio system. The Pearleste material immersed in purified water and tea was not affected substantially by the polymerization systems. Among the 12 groups polymerized with the Hyper LII units, DeltaE(*)(ab) values of 11 groups were significantly lower for the Pearleste material than for the Sinfony material. It can be concluded that the Pearleste material was stable against color change when the material was polymerized with either the Pearlcure system or with the Hyper LII unit.
DOI:
--
发表时间:
1998
期刊:
American journal of dentistry.
影响因子:
--
作者:
Freiberg,RS;Ferracane,JL
通讯作者:
Ferracane,JL
影响因子:
5
作者:
Bagis, YH;Rueggeberg, FA
通讯作者:
Rueggeberg, FA