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An investigation into the effect of try-in pastes, uncured and cured resin cements on the overall color of ceramic veneer restorations: An in vitro study

ALGhazali, N.; Laukner, J.; Burnside, G.; Jarad, F.D.; Smith, P.W. and Preston, A.J. (2010) An investigation into the effect of try-in pastes, uncured and cured resin cements on the overall color of ceramic veneer restorations: An in vitro study. Journal of Dentistry, 38 (Supplement 2). e78-e86. ISSN 1879-176X (Online); 0300-5712 (Print)

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

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Abstract

Objectives The aim of this study was to assess how different shades of try-in pastes, uncured and cured resin cements influence the overall colour of porcelain veneer restorations. Methods Porcelain veneers of shade Vita 1M1 VM7 and 1mm thick were applied to bovine teeth using 3 shades of resin cement and their try-in paste produced by 3 manufacturers. Analysis of variance was carried out on the colour difference values (ΔE*) between the Aquagel and both the try-in paste and cured resins. An assessment of the clinical significance of ΔE* between the try-in paste and the cured resin and also between the uncured and cured resin was made. Results There were statistically significant differences in veneers’ colours when using different shades of both Calibra and Nexus resin cements (p<0.05). Also, statistically significant differences were noticed when using different shades of both Rely-X and Nexus try-in pastes (p<0.05). Colour differences produced between the try-in pastes and the corresponding shades of cured resin cements was perceptible with some of these differences were clinically unacceptable (ΔE* 1.05 – 3.34). The colour differences between uncured and cured resins of the same shade were around the perceptibility threshold (ΔE* 0.78 – 1.41). Conclusions Different coloured try-in pastes and resin cements produce colour changes which may be clinically useful in changing the colour of veneer restorations and therefore aid colour matching to the adjacent dentition. The colour match achieved by the try-in paste should be treated with caution and further assessment of the restoration should be made with the resin in place before curing.

Item Type:Article
Additional Information:Supplement title: Journal of Color and Appearance in Dentistry. Available online 27 August 2010. Small change in title from uploaded document to the published PDF. Title : An investigation into the effect of try-in pastes, uncured and cured resin cements on the overall colour of ceramic veneer restorations. Change in corresponding author from uploaded document to published PDF. Corresponding author on uploaded document: N. AL Ghazali.
Uncontrolled Keywords:Color; Colour; difference; Resin Cement; Ceramic; Veneers; Shade; Try-in paste; Spectrophotometer
Subjects:R Medicine > RK Dentistry
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Medicine > School of Dental Sciences
DOI:10.1016/j.jdent.2010.08.013
Refereed:Yes
Status:Published
ID Code:1393
Deposited On:06 Oct 2010 12:05
Last Modified:11 Jan 2012 09:41

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