Choice of resin cement shades for a high-translucency zirconia product to mask dark, discolored or metal substrates
Dai Shiqi, Chen Chen, Tang Mo, Chen Ying, Yang Lu, He Feng, Chen Bingzhuo, Xie Haifeng,
소속 상세정보
( Dai Shiqi ) - Nanjing Medical University Affiliated Hospital of Stomatology Department of Prosthodontics
( Chen Chen ) - Nanjing Medical University Affiliated Hospital of Stomatology Department of Endodontics
( Tang Mo ) - Nanjing Medical University Affiliated Hospital of Stomatology Department of Prosthodontics
( Chen Ying ) - Nanjing Medical University Affiliated Hospital of Stomatology Department of Prosthodontics
( Yang Lu ) - Nanjing Medical University Affiliated Hospital of Stomatology Department of Prosthodontics
( He Feng ) - Nanjing Medical University Affiliated Hospital of Stomatology Department of Prosthodontics
( Chen Bingzhuo ) - Nanjing Medical University Affiliated Hospital of Stomatology Department of Prosthodontics
( Xie Haifeng ) - Nanjing Medical University Affiliated Hospital of Stomatology Department of Prosthodontics
Abstract
PURPOSE: The aim was to study the masking ability of high-translucency monolithic zirconia and provide guidance in selecting resin luting cements in order to mask discolored substrates.
MATERIALS AND METHODS: 160 high-translucency zirconia specimens were divided into 32 groups depending on their thickness and shades. Using five shades of try-in paste, the specimens were luted onto the sub strates (Co-Cr, precious-metal, opaque porcelain-sintered Co-Cr, opaque porcelain-sintered precious-metal, and 5M3-shade zirconia). All CIELAB color parameters were measured and statistically analyzed.
RESULTS: Zirconia shade and thickness and try-in paste shade affected CIELAB color parameters (P=.000) in different substrates groups, and there were interactions among these factors (P=.000). All five try-in paste shades can be chosen to achieve ΔE values of zirconia with 1.2 ? 1.5 mm for masking dark-tooth-like 5M3-shade and zirconia with 1.5 mm for masking precious-metal groups < 2.6. Only suitable try-in paste shades were used, can ΔE values that less than 2.6 be achieved when applied translucent monolithic zirconia with 0.7?1.0 mm for masking dark-tooth-like 5M3-shade and zirconia with 0.7 ? 1.2 mm for masking precious-metal groups.
CONCLUSION: Choosing suitable resin cement shades is necessary for high-translucency monolithic zirconia to achieve ideal masking ability (ΔE < 2.6) on the dark-tooth.
키워드
Resin cement; Color; Zirconia; Post-core; Spectrophotometry
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