| Autor: |
Jin, Chen, Qi, Xia, Ling-Ling, Zhang, Hui-Fen, Qian, Xing-Xing, Li |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Hua Xi Kou Qiang Yi Xue Za Zhi |
| ISSN: |
2618-0456 |
| Popis: |
OBJECTIVE: To analyze the chromatic properties and translucency of porcelain veneers made from different ceramic materials against the background of tetracycline-stained teeth. METHODS: Porcelain specimens (A1, A3, B2, B4) measuring 0.50 mm in thickness were prepared by heat-press casting and layering. The L*, a*, and b* values of the specimens against simulated tetracycline tooth and black-and-white backgrounds were measured by a spectrophotometer, and color differences ΔE(00)1 between specimens on simulated tetracycline backgrounds and the backgrounds themselves and ΔE(00)2 between specimens on simulated tetracycline backgrounds and the white background were calculated. The translucent parameter (TP) was also evaluated. RESULTS: The ΔE(00)1 of feldspathic specimens (IPS d.SIGN) with the opaque layer was significantly greater than that of glass ceramic specimens (IPS e.max Press LT), and the ΔE(00)1 of group B4 was consistently greater than those of the other color groups (P0.05). The TP values of feldspathic specimens with the opaque layer were significantly lower than those of glass ceramic specimens(P0.05). CONCLUSION: When changing the color of tetracycline-stained teeth, 0.50 mm-thick IPS d.SIGN feldspathic veneers with an opaque layer provide better chromatic properties than IPS e.max Press LT glass ceramic veneers. However, the translucency of feldspathic veneers is generally poorer than that of glass ceramic veneers. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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