Effects of surrounding and underlying shades on the color adjustment potential of a single-shade composite used in a thin layer.

Autor: Barros MS; Department of Dentistry, Federal University of Sergipe, Aracaju, SE, Brazil., Silva PFD; Department of Dentistry, Federal University of Sergipe, Aracaju, SE, Brazil., Santana MLC; Department of Dentistry, Federal University of Sergipe, Aracaju, SE, Brazil., Bragança RMF; Department of Dentistry, Federal University of Sergipe, Aracaju, SE, Brazil., Faria-E-Silva AL; Department of Dentistry, Federal University of Sergipe, Aracaju, SE, Brazil.
Jazyk: angličtina
Zdroj: Restorative dentistry & endodontics [Restor Dent Endod] 2022 Dec 29; Vol. 48 (1), pp. e7. Date of Electronic Publication: 2022 Dec 29 (Print Publication: 2023).
DOI: 10.5395/rde.2023.48.e7
Abstrakt: Objectives: This study aimed to evaluate the surrounding and underlying shades' effect on the color adjustment potential (CAP) of a single-shade composite used in a thin layer.
Materials and Methods: Cylinder specimens (1.0 mm thick) were built with the Vittra APS Unique composite, surrounded (dual specimens) or not (simple specimens) by a control composite (shade A1, A2, or A3). Simple specimens were also built only with the control composites. Each specimen's color was measured against white and black backgrounds or the simple control specimens with a spectrophotometer (CIELAB system). The whiteness index for dentistry (WI D ) and translucency parameters (TP 00 ) were calculated for simple specimens. Differences (ΔE 00 ) in color between the simple/dual specimens and the controls were calculated. The CAP was calculated based on the ratios between data from simple and dual specimens.
Results: The Vittra APS Unique composite showed higher WI D and TP 00 values than the controls. The highest values of ΔE 00 were observed among simple specimens. The color measurements of Vittra APS Unique (simple or dual) against the control specimens presented the lowest color differences. Only surrounding the single-shade composite with a shaded composite barely impacted the ΔE 00 . The highest CAP values were obtained using a shaded composite under simple or dual specimens.
Conclusions: The CAP of Vittra APS Unique was strongly affected by the underlying shade, while surrounding this composite with a shaded one barely affected its color adjustment.
Competing Interests: Conflict of Interest: No potential conflict of interest relevant to this article was reported.
(Copyright © 2023. The Korean Academy of Conservative Dentistry.)
Databáze: MEDLINE
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