Choice of resin cement shades for a high-translucency zirconia product to mask dark, discolored or metal substrates
10.4047/jap.2019.11.5.286
- Author:
Shiqi DAI
1
,
2
;
Chen CHEN
;
Mo TANG
;
Ying CHEN
;
Lu YANG
;
Feng HE
;
Bingzhuo CHEN
;
Haifeng XIE
Author Information
1. Jiangsu Key Laboratory of Oral Diseases
2. Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China. xhf-1980@126.com
- Publication Type:Original Article
- Keywords:
Resin cement;
Color;
Zirconia;
Post-core;
Spectrophotometry
- MeSH:
Masks;
Resin Cements;
Spectrophotometry
- From:The Journal of Advanced Prosthodontics
2019;11(5):286-296
- CountryRepublic of Korea
- Language:English
-
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.
