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논문 기본 정보

자료유형
학술저널
저자정보
Franklin Guillermo Vargas-Corral (Prosthodontics Department, School of Dentistry, University of Granada, Granada, Spain) Américo Ernesto Vargas Corral (Private practice, Granada, Spain) Miguel Angel Rodriguez Valverde (Applied Physics Department, School of Sciences, University of Granada, Granada, Spain) Manual Bravo (Oral Health and Preventive Dentistry Department, School of Dentistry, University of Granada, Granada, Spain) Juan Ignacio Rosales Leal (Prosthodontics Department, School of Dentistry, University of Granada, Granada, Spain)
저널정보
대한치과보철학회 The Journal of Advanced of Prosthodontics The Journal of Advanced of Prosthodontics Vol.16 No.1
발행연도
2024.2
수록면
57 - 65 (9page)

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Purpose. To evaluate the metameric disparities among monolithic zirconia materials with differing yttrium compositions across various lighting conditions. Materials and Methods. Thirty-six square-shaped zirconia samples measuring 10 × 10 × 0.5 mm were prepared from monolithic zirconia materials with three different yttrium contents. A 0.2 mm thick layer of polymerized dual-polymerizable self-adhesive resin cement was created using a silicone mold with the same dimensions as the prepared zirconia specimens. To evaluate metamerism, color measurements were conducted using a spectrophotometer device on a neutral gray background in a color measurement cabinet that offers four different illumination environments. All samples underwent aging by subjecting them to 10000 thermal cycles using a thermal cycle tester. Following thermal aging, color measurements were taken once more, and the data were recorded using the CIE L*, a*, b* color system. Two-way ANOVA and Post-hoc Bonferroni tests were employed to analyze the data. Results. It was observed that there was no statistical difference among the color measurements made in different illumination environments of the monolithic zirconia ceramics used to evaluate metamerism (P > .05). This observation remained consistent both before and after thermal aging. After thermal aging, the color of monolithic zirconia materials exhibited a tendency towards red and yellow hues, accompanied by a decrease in brightness levels. Conclusion. It can be stated that different illumination conditions did not affect the metamerism of monolithic zirconia materials, but there was a color change in monolithic zirconia materials after a thermal aging period equivalent to one year.

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