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European Journal of Prosthodontics and Restorative Dentistry

Colour Matching of Composite Resin Cements with their Corresponding Try-In Pastes

Abstract

Abstract - Two shades of four resin cements (Calibra, Clearfil Esthetic, Insure, Variolink II), in light- and dualcuring modes, were tested for colour matching with their corresponding try-in pastes, immediately after photopolymerization and after 24-hour dry and dark storage. Colour measurements were performed for 0.8 mm-thick specimens through a 0.8mm-thick ceramic plate. For each resin cement, colour differences (ΔΕ) were calculated between the two curing modes, and between the corresponding try-in paste, at baseline and after 24h. ΔΕ>0 values were detected between all resin cements and their try-in pastes, which were brand/shade/curing mode depended. The try-in pastes of the Variolink II system demonstrated the best colour matching (ΔΕ<2). Try-in pastes of Calibra and Insure, at both curing modes, did not match at an acceptable value, the shade of their corresponding resin cements (ΔΕ>3.3). Calibra presented the highest colour differences. ΔΕ values of the Clearfil Esthetic system immediately after photo-activation ranged between 2 and 3 units. A ceramic restoration may fail aesthetically as a result of not acceptable colour match (ΔΕ>3.3) between the shade of certain resin cements and their relevant try-in pastes.

KEYWORDS: resin cement, try-in paste, polymerization mode, colour matching

Authors

D. Kampouropoulos, M. Gaintantzopoulou, E. Papazoglou, A. Kakaboura

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