Lee Jae-Hyun, Kim Sung-Hun, Han Jung-Suk, Yeo In-Sung Luke, Yoon Hyung-In
Department of Prosthodontics, One-Stop Specialty Center, Seoul National University Dental Hospital, Seoul 03080, Korea.
Department of Prosthodontics and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 03080, Korea.
Materials (Basel). 2019 Apr 10;12(7):1158. doi: 10.3390/ma12071158.
This in vitro study investigated the impact of various dentifrices on the shade, translucency, gloss, and surface characteristics of polishing- or glazing-finished monolithic zirconia surfaces after simulated toothbrushing. Eighty square-shaped monolithic zirconia specimens were divided into two major groups based on the finishing methods-polished (P) and glazed (G). Next, specimens from the two major groups were categorized into four subgroups: stored in distilled water (DW, control); brushed with a fluoride-free conventional dentifrice (C); brushed with a fluoride dentifrice (F); and brushed with a whitening dentifrice (W). Overall, eight groups were created-PDW, PC, PF, PW, GDW, GC, GF, and GW ( = 10 each). Shade, translucency, surface gloss, surface roughness, crystalline phase, and superficial topography data were obtained. Repeated-measures ANOVA and two-way ANOVA were used for intergroup comparison (all = 0.05). The color differences (Δ) between pre- and posttreatment were 0.3158 (PDW), 0.7164 (PC), 0.7498 (PF), 0.8106 (PW), 0.1953 (GDW), 0.301 (GC), 0.3051 (GF), and 0.4846 (GW). A statistically significant difference was observed among the Δ, surface gloss, and surface roughness of monolithic zirconia. Thus, brushing with several dentifrices markedly affects the optical properties and surface characteristics of monolithic zirconia finished with polishing or glazing methods.
这项体外研究调查了在模拟刷牙后，各种牙膏对经过抛光或上釉处理的整体式氧化锆表面的色泽、半透明度、光泽度和表面特性的影响。八十个方形整体式氧化锆试件根据处理方法分为两个主要组——抛光组（P）和上釉组（G）。接下来，将两个主要组中的试件分为四个亚组：储存在蒸馏水中（DW，对照组）；用不含氟的传统牙膏刷牙（C）；用含氟牙膏刷牙（F）；用美白牙膏刷牙（W）。总体而言，共创建了八组——PDW、PC、PF、PW、GDW、GC、GF和GW（每组n = 10）。获取了色泽、半透明度、表面光泽度、表面粗糙度、晶相和表面形貌数据。采用重复测量方差分析和双向方差分析进行组间比较（所有α = 0.05）。处理前后的颜色差异（Δ）分别为0.3158（PDW）、0.7164（PC）、0.7498（PF）、0.8106（PW）、0.1953（GDW）、0.301（GC）、0.3051（GF）和0.4846（GW）。在整体式氧化锆的Δ、表面光泽度和表面粗糙度之间观察到了统计学上的显著差异。因此，用几种牙膏刷牙会显著影响采用抛光或上釉方法处理的整体式氧化锆的光学性能和表面特性。
