Lee Jae-Hyun, Kim Sung-Hun, Yoon Hyung-In, Yeo In-Sung L, Han Jung-Suk
Department of Prosthodontics, One-Stop Specialty Center, Seoul National University Dental Hospital, Seoul, South Korea.
Department of Prosthodontics and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, South Korea.
Eur J Oral Sci. 2020 Apr;128(2):170-180. doi: 10.1111/eos.12676. Epub 2020 Feb 7.
High-translucency restorative materials are commonly used in the restoration of anterior teeth where aesthetics is a critical factor. In this in vitro study, the impact of mouthwash on the colour stability and surface characteristics of high-translucency computer-aided design and computer-aided manufacturing (CAD-CAM) dental restorative materials was evaluated. Two-hundred specimens were fabricated from five high-translucency CAD-CAM materials: a resin nano ceramic; a polymer-infiltrated ceramic network; a feldspathic ceramic; a lithium disilicate glass ceramic; and high-translucency zirconia. Each group of ceramic specimens was then divided into four subgroups: conventional mouthwash (LISTERINE); whitening mouthwash (LISTERINE Healthy White); chlorhexidine gluconate; and distilled water. Oral rinsing was simulated at 100 rpm for 180 h, representing 15 yr of clinical simulation. The specimens were then evaluated for colour, translucency, gloss, roughness, and surface morphology. Two-way ANOVA and linear mixed models were used for intergroup comparisons (α = 0.05). The polymer-infiltrated ceramic network and feldspathic ceramic became brighter, more opaque, less glossy, and rougher after rinsing with the whitening mouthwash. The long-term use of specific mouthwashes can cause deterioration of the optical and surface properties of high-translucency CAD-CAM dental restorations.
高透明度修复材料常用于前牙修复，美观是一个关键因素。在这项体外研究中，评估了漱口水对高透明度计算机辅助设计和计算机辅助制造（CAD-CAM）牙科修复材料的颜色稳定性和表面特性的影响。用五种高透明度CAD-CAM材料制作了200个样本：一种树脂纳米陶瓷；一种聚合物渗透陶瓷网络；一种长石质陶瓷；一种二硅酸锂玻璃陶瓷；以及高透明度氧化锆。然后将每组陶瓷样本分为四个亚组：传统漱口水（李施德林）；美白漱口水（李施德林健康亮白）；葡萄糖酸氯己定；以及蒸馏水。以100转/分钟的速度模拟口腔冲洗180小时，相当于15年的临床模拟。然后对样本进行颜色、透明度、光泽度、粗糙度和表面形态的评估。使用双向方差分析和线性混合模型进行组间比较（α = 0.05）。用美白漱口水冲洗后，聚合物渗透陶瓷网络和长石质陶瓷变得更亮、更不透明、光泽度更低且更粗糙。长期使用特定漱口水会导致高透明度CAD-CAM牙科修复体的光学和表面性能恶化。
