Valizadeh-Haghi Haleh, Molaee Shadieh, Kamran Aziz, Davoodzadeh Shiva
Department of Operative Dentistry, Ardabil University of Medical Sciences, Ardabil, Iran.
School of Medicine and Allied Medical Sciences, Ardabil University of Medical Sciences, Ardabil, Iran.
Int J Dent. 2022 May 17;2022:7479299. doi: 10.1155/2022/7479299. eCollection 2022.
In recent years, the use of bleach shade composite resins has increased due to the high esthetic demands. The aim of the present study was to investigate the masking ability and translucency of several bleach shade composite resins.
In this in vitro study, 180 discs from 9 bleach shade composite resins of 5 brands (G-aenial Anterior, Gradia Direct, Charisma Diamond, Estelite Sigma Quick, and Renamel Microfill) in thicknesses of 0.5, 1, 1.5, and 2 mm were prepared. The color parameters of the specimens were measured in a CIE l a b system using a spectrophotometer. Masking ability and translucency parameters were calculated, and the influence of thickness, shade, and composite resin brand on these variables was analyzed using the Kruskal-Wallis and Mann-Whitney tests.
Both masking ability and translucency differed significantly among groups ( < 0.001), but only MA was different between different brands ( < 0.001). Higher thicknesses showed lower translucency in all pairwise comparisons ( < 0.001). 0.5 mm-thick specimens had lower masking ability than 1.5 mm- (=0.016) and 2 mm- (=0.035) thick ones. However, masking ability of other thickness pairs did not show a significant difference ( > 0.05). G-aenial Anterior and Renamel Microfill had the highest and lowest masking ability. Bleach white shades had lower masking ability and higher translucency than extrawhite bleach shades.
Translucency and masking ability of bleach shade composite resins differed in different thicknesses, composite resin brands, and shade groups.
近年来，由于对美学的高要求，漂白色调复合树脂的使用有所增加。本研究的目的是调查几种漂白色调复合树脂的遮盖能力和半透明度。
在这项体外研究中，制备了来自5个品牌（G-aenial Anterior、Gradia Direct、Charisma Diamond、Estelite Sigma Quick和Renamel Microfill）的9种漂白色调复合树脂的180个圆盘，厚度分别为0.5、1、1.5和2毫米。使用分光光度计在CIE l a b系统中测量标本的颜色参数。计算遮盖能力和半透明度参数，并使用Kruskal-Wallis和Mann-Whitney检验分析厚度、色调和复合树脂品牌对这些变量的影响。
各组之间的遮盖能力和半透明度均有显著差异（<0.001），但不同品牌之间只有遮盖能力存在差异（<0.001）。在所有两两比较中，较厚的厚度显示出较低的半透明度（<0.001）。0.5毫米厚的标本的遮盖能力低于1.5毫米（=0.016）和2毫米（=0.035）厚的标本。然而，其他厚度对的遮盖能力没有显著差异（>0.05）。G-aenial Anterior和Renamel Microfill的遮盖能力最高和最低。漂白白色调的遮盖能力低于超白色调，半透明度高于超白色调。
漂白色调复合树脂的半透明度和遮盖能力在不同厚度、复合树脂品牌和色调组中存在差异。
