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Agreement of Try‐In Pastes and the Corresponding Luting Composites on the Final Color of Ceramic Veneers
Author(s) -
Xu Binting,
Chen Xiaodong,
Li Rong,
Wang Yining,
Li Qing
Publication year - 2014
Publication title -
journal of prosthodontics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.902
H-Index - 60
eISSN - 1532-849X
pISSN - 1059-941X
DOI - 10.1111/jopr.12109
Subject(s) - veneer , materials science , ceramic , composite material , composite number , luting agent , color difference , dentin , adhesive , computer science , layer (electronics) , bond strength , filter (signal processing) , computer vision
Purpose The aims of this study were to evaluate the influence of luting composites on the final color of ceramic veneers and to investigate the color matching of try‐in pastes to the corresponding luting composites. Materials and Methods Ceramic discs (shade A3, 1.0 mm thick) were fabricated and seated on composite specimens (shade A3) to mimic a complex of ceramic veneer lying on dentin substrate. The try‐in pastes and luting composites of 3M RelyX were applied into the interlayer of the ceramic and composite specimens. The colors of the complexes were measured using a spectrophotometer, and subsequently converted to CIE L*a*b* values. Color changes after luting composites were applied, and the changes between the try‐in pastes and the corresponding luting composites were calculated and registered as ΔE luting and ΔE paste‐luting . Color measurements were repeated while the ceramic specimens were reduced to 0.7 mm and then 0.5 mm in thickness. Results The means of ΔE luting were 0.69 ± 0.21, 1.27 ± 0.48, and 1.40 ± 0.57 for the 1.0, 0.7, and 0.5 mm thicknesses, respectively. Two‐way ANOVA revealed that ΔE paste‐luting values were significantly affected by the colors of luting composites and veneer thickness ( p < 0.001). Lighter shades of luting composites showed less influence on ΔE paste‐luting values. Conclusions Luting composites could slightly modify the final color of ceramic veneers. Color matching of a try‐in paste to the corresponding luting composite was not always achieved in the 0.7 or 0.5 mm thicknesses.