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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 ∆E 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), ∆E was 4.55 value. Conclusion: This study showed effect of shade on all ceramic restoration based zirconia according to cooling rate on Firing.
목차
Abstract Ⅰ. 서론 Ⅱ. 연구 방법 1. 연구재료 및 시편제작 2. 분광광도계에 의한 측정과 통계처리 Ⅲ. 결과 Ⅳ. 고찰 Ⅴ. 결론 REFERENCES