The effect of artificial accelerated aging on the color stability, microhardness, and surface roughness of different dental laminate veneer materials

• Published in: Journal of esthetic and restorative dentistry 2022-03, Vol.34 (2), p.405-411
• Main Authors: Taşın, Simge, Celik, Gozde, İsmatullaev, Artur, Usumez, Aslihan
• Format: Article
• Language: English
• Subjects: Aging; Ceramics; Color; color stability; Dental Porcelain; Dental restorative materials; Dental Veneers; laminate veneer; Materials Testing; microhardness; Statistical analysis; Surface Properties; surface roughness
• ISSN: 1496-4155; 1708-8240
• DOI: 10.1111/jerd.12567

Objective This study aimed to evaluate the effect of artificial accelerated aging (AAA) on color stability, surface roughness, and microhardness of three laminate veneer (LV) materials. Materials and Methods Specimens of ceramic LV (CLV‐IPS E.max Press), hand‐layered composite LV (hand‐layered laminate veneer [HLV]‐Tetric N‐Ceram), and prefabricated composite LV (prefabricated laminate veneer [PLV]‐Componeer Coltene) were prepared as discs (n = 10). CIE L*, a*, and b* color coordinates, the Vickers microhardness, and surface roughness were measured 24 hours after preparation and reevaluated after aging for 300 hours in an ultraviolet (UV)‐AAA system (Ci35 Weather‐Ometer). Color difference (CIEDE2000 [ΔE00]) was calculated. Data were statistically analyzed with the Shapiro‐Wilk test and the Kruskall‐Wallis test followed by the Mann‐Whitney U tests (α = .05). Results All of the LV groups showed significant differences in ΔE00 after AAA (P