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- 저자 : Gonca Deste Gökay (검색결과 1 건)
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Comparison of the effect of different metal alloys on the esthetic appearance of dentin porcelain
Gonca Deste Gökay,Rukiye Durkan,Perihan Oyar,Gülsüm Gökçimen 한양대학교 세라믹연구소 2022 Journal of Ceramic Processing Research Vol.23 No.1
The purpose of this study was to examine the effect of aurofilm masking agents applied to various metal alloys on the colorof porcelain in metal-ceramic restorations (MCRs). The study was conducted with 2 different base-metal alloys (Ni-Cr, Co-Cr)and 2 different noble alloys (Pd-based, Au-Pd) used for MCRs, as well as 1 high noble alloy (Au-based) that served as a controlgroup. Eight experimental groups (n=7) and 1 control group were used in this study. An aurofilm masking agent was appliedto 4 groups (AuPdM, PdM, CoCr, NiCrM). Opaque porcelain and dentin body porcelain were applied to all groups. CIEL*a*b* color coordinates were measured. The Pd group had the highest mean a* value (-5.82); however, in comparisonto the control group, the differences in a* values were statistically significant only for the Cr-Co alloy groups (CoCr andCoCrM). The Pd group had the highest mean b* value (7.89). The ΔE value (2.13) of the CoCr group was significantly higherthan all other alloy groups. Metal alloy substrate and aurofilm masking agents significantly affected the color of porcelainMCRs. However, color differences between base-metal and noble alloys and the control group were within clinically acceptablelimits (ΔE<3.5).
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