目的:为了研究不同表面处理和厚度对颜色的影响,透明度,和超透明氧化锆的表面粗糙度。
方法:根据厚度(0.3、0.5和0.7mm)和表面处理(对照,空气中的颗粒磨损[APA],二硅酸锂涂层,和釉上)。使用数字分光光度计计算色差(ΔE00)和相对半透明参数(RTP00)。表面粗糙度(Ra,Rq,Sa,和Sq)使用非接触式轮廓扫描仪测量。使用钨丝扫描电子显微镜观察了样品的表面形貌和微观结构。通过单向和双向方差分析(ANOVA)进行统计分析,然后进行事后多重比较和Pearson相关性(α=0.05)。
结果:结果表明,表面处理,陶瓷厚度,它们的相互作用对ΔE00和RTP00有显著影响(p<0.001)。表面处理显着改变了陶瓷样品的微观形态并增加了表面粗糙度。APA表现出最低的透明度,最大色差,和最高的表面粗糙度。厚度为0.3mm和0.7mm的氧化锆在Sa和RTP00之间显示出强的负相关。
结论:三种内表面处理显著改变了表面粗糙度,色差,和超透明氧化锆的透明度。随着厚度的增加,内表面处理对氧化锆的色差和透明度的影响降低。
结论:对于新的氧化锆内表面处理技术,除了考虑对粘结性能的增强作用外,还应考虑对高透明度氧化锆的颜色和半透明性的潜在影响。适当增加氧化锆修复体的厚度有助于最小化表面处理对光学性质的影响。
OBJECTIVE: To investigate the effects of different surface treatments and thicknesses on the color, transparency, and surface roughness of ultra-transparent zirconia.
METHODS: A total of 120 Katana ultra-translucent multi-layered zirconia specimens were divided into 12 groups according to the thickness (0.3, 0.5, and 0.7 mm) and surface treatment (control, airborne particle abrasion [APA], lithium disilicate coating, and glaze on). Color difference (ΔE00) and relative translucency parameter (RTP00) were calculated using a digital spectrophotometer. The surface roughness (Ra, Rq, Sa, and Sq) was measured using a non-contact profile scanner. The surface morphologies and microstructures of the samples were observed using a tungsten filament scanning electron microscope. Statistical analyses were performed by one-way and two-way analysis of variance (ANOVA) followed by post hoc multiple comparisons and Pearson\'s correlation (α = 0.05).
RESULTS: The results showed that the surface treatment, ceramic thickness, and their interactions had significant effects on ΔE00 and RTP00 (p < 0.001). The surface treatment significantly altered the micromorphology and increased the surface roughness of the ceramic samples. APA exhibited the lowest transparency, largest color difference, and highest surface roughness. Zirconia with 0.3 mm and 0.7 mm thicknesses showed strong negative correlations between Sa and RTP00.
CONCLUSIONS: The three internal surface treatments significantly altered the surface roughness, color difference, and transparency of ultra-transparent zirconia. As the thickness increased, the influence of the inner surface treatment on the color difference and transparency of zirconia decreased.
CONCLUSIONS: For new zirconia internal surface treatment technologies, in addition to considering the enhancement effect on the bonding properties, the potential effects on the color and translucency of high-transparency zirconia should also be considered. Appropriately increasing the thickness of zirconia restorations helps minimize the effect of surface treatment on the optical properties.