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KMID : 0362120150370040199
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Journal of Technologic Dentistry
2015 Volume.37 No. 4 p.199 ~ p.203
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Effect of Shade on All Ceramic Restoration based Zirconia according to Cooling rate on Firing
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전진훈:Jeong Jin-Hun
민병국:Min Byung-Kuk/황재선:Hwang Jae-Sun/김웅철:Kim Woong-Chul
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Abstract
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Purpose: The purpose of this in vitro study was to evaluation the effect of shade on all ceramic restoration based zirconia according to cooling rate on Firing.
Methods: 10 specimens applied to the dentin porcelain were made on the zirconia. After 5 specimens of the first group were burned in the furnace, these were put out rapidly. And after 5 specimens of the second group were burned in the furnace, these were put out slowly later 15 min. All specimens were measured L*, a*, b* using spectrophotometer, there were calculated 10 mean(SD) of descriptive statistics with SPSS program. These data were used for ΔE* with color difference equation. Independent t tests were performed between 2 groups.
Results: L*, a*, b* of 2 groups was statistically significant respectively (p<0.001), ΔE* was 4.55 value.
Conclusion: This study showed effect of shade on all ceramic restoration based zirconia according to cooling rate on Firing.
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KEYWORD
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shade, , L* a* b*, Δ E: spectrophotometer
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