ARTIFICIAL ACCELERATED AGING EFFECTS ON THE COLOR AND GLOSS STABILITY OF MODERN UNIVERSAL RESIN COMPOSITES: AN IN-VITRO STUDY

Al-Saudi, Khaled; Badran, Omar Nabil; Mohamed, Sarah; Nabil Amin, Aalaa Mohamed

doi:10.21608/edj.2022.131772.2063

	ARTIFICIAL ACCELERATED AGING EFFECTS ON THE COLOR AND GLOSS STABILITY OF MODERN UNIVERSAL RESIN COMPOSITES: AN IN-VITRO STUDY
Egyptian Dental Journal
Article 14, Volume 68, Issue 3 - Serial Number 5, July 2022, Page 2875-2886 PDF (817.25 K)
Document Type: Original Article
DOI: 10.21608/edj.2022.131772.2063
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Authors
Khaled Al-Saudi ¹; Omar Nabil Badran ¹; Sarah Mohamed ¹; Aalaa Mohamed Nabil Amin ²
¹Lecturer in Operative and Conservative Dentistry Department, Faculty of Dentistry, Nahda University, Beni-Suef, Egypt
²Lecturer in Restorative Dentistry Department, Faculty of Dentistry, Modern University for Technology and Information, Cairo, Egypt
Abstract
ABSTRACT: Background: Progression in filler technology has given rise to the introduction of modern universal resin composites, which simplify shade selection; however, their performances after artificial accelerated aging are yet to be examined and verified. Objectives: To evaluate and compare the color and gloss stability of different modern universal composites submitted to different periods of artificial accelerated aging. Materials and Methods: Forty disc-shaped composite specimens were fabricated, cured and polished then divided into four groups (n=10): (G1; Omnichroma, G2; Filtek Universal Restorative, G3; TPH Spectra ST, G4; Filtek Z350 XT). Color and gloss were measured before and after exposing to weathering device for (100, 200, 300 hours). The color change (ΔE) was assessed with a spectrophotometer. The surface gloss was calculated using a glossmeter. Results were statistically analyzed using repeated measures ANOVA test followed by Bonferroni’s post-hoc test (P ≤ 0.05). Results: ΔE was observed to be a positive linear function of log time. ΔE* was maximal in the sequence; Filtek Z350 XT = TPH Spectra ST > Omnichroma > Filtek Universal Restorative. ΔE* remained < 3.3 for Filtek Universal Restorative and Omnichroma. Gloss was observed to be a negative linear function of log time. Gloss was maximal in the sequence; Omnichroma > Filtek Universal Restorative > Filtek Z350 XT > TPH Spectra ST. Conclusions: Omnichroma and Filtek Universal Restorative demonstrated superior performance in color and gloss stability compared to TPH Spectra ST and Filtek Z350 XT.
Keywords
Keywords: accelerated aging; color; gloss; modern composites


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