Color stability of bulk-fill and universal composite restorations with dissimilar dentin replacement materials.

Autor: Miletic V; University of Belgrade, School of Dental Medicine, DentalNet Research Group, Belgrade, Serbia., Marjanovic J; University of Belgrade, School of Dental Medicine, DentalNet Research Group, Belgrade, Serbia., Veljovic DN; University of Belgrade, Faculty of Technology and Metallurgy, Belgrade, Serbia., Stasic JN; University of Belgrade, School of Dental Medicine, DentalNet Research Group, Belgrade, Serbia., Petrovic V; University of Belgrade, School of Dental Medicine, DentalNet Research Group, Belgrade, Serbia.
Jazyk: angličtina
Zdroj: Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.] [J Esthet Restor Dent] 2019 Sep; Vol. 31 (5), pp. 520-528. Date of Electronic Publication: 2019 Oct 03.
DOI: 10.1111/jerd.12529
Abstrakt: Objective: To determine color changes in bulk-fill composite and universal composite restorations with dissimilar dentin replacement materials in extracted teeth after staining in red wine.
Materials and Methods: Cylindrical, 4 mm deep, class I cavities were prepared in 140 human molars. Bottom 2 mm was restored with Biodentine (Septodont), everX posterior (GC) or experimental HAP inserts. Each dentin replacement material was covered with a 2-mm layer of a universal composite Filtek Z250 or Z550 (3M ESPE) or Gradia Posterior (GC). Groups combining top composite layer and the underlying dentin replacement were designated as "composite_dentin replacement." Filtek Bulk Fill (3M ESPE) and Tetric EvoCeram Bulk Fill (Ivoclar Vivadent) were placed as a single 4-mm layer. Color measurements were performed using Vita Easyshade 4.0 (Vita Zahnfabrik) initially and after 48-hours storage in red wine at 37°C.
Results: Color differences (ΔE oo ) ranged between 2.1 ± 0.7 (Z250_HAP) and 7.8 ± 1.1 (Z550_everX). EverX resulted in higher ΔE oo of the overlying composite than HAP (P < .001) and Biodentine (P = .006). Generally, ΔE oo was affected more by decreasing lightness (ΔL') than changes in chroma (ΔC').
Conclusions: EverX resulted in higher ΔE oo of the restoration than Biodentine and experimental HAP after staining in red wine. No significant differences in ΔE oo may be expected in different composites with the same underlying dentin replacement material. The same was generally true for bulk-fill and universal composites.
Clinical Significance: Similar extent of color changes may be expected in bulk-fill and universal composites. Highly translucent everX might exhibit greater color differences irrespective of the capping composite than non-translucent materials. Clinicians have a wider choice of composite materials to cover a particular dentin replacement material, for example, everX or Biodentine, as similar color differences may be expected in various overlying composite brands.
(© 2019 Wiley Periodicals, Inc.)
Databáze: MEDLINE