PDF(Pubmed)
Abstract：
The use of vaping or electronic cigarette devices (ECDs) has recently increased as an alternative to conventional tobacco smoking products. By recording the CIELAB coordinates (L*a*b*) and computing the total color difference (ΔE) values using a spectrophotometer, the effect of ECDs on contemporary aesthetic dental ceramics was investigated in this in-vitro study. A total of seventy-five (N = 75) specimens from five different (n = 15) dental ceramic materials (Pressable ceramics (PEmax); Pressed and layered ceramics (LEmax); Layered zirconia (LZr); Monolithic zirconia (MZr) and Porcelain fused to metal (PFM)) were prepared and exposed to aerosols produced by the ECDs. The color assessment was performed using a spectrophotometer at six time intervals (0 = baseline; 250-puff exposures; 500-puff exposures; 750-puff exposures; 1000-puff exposures; 1250-puff exposures; and 1500-puff exposures). By recording L*a*b* and computing total color difference (ΔE) values, the data were processed. A one-way ANOVA and Tukey procedure for pairwise comparisons were used to assess color differences between tested ceramics (p < 0.05). All test materials demonstrated significant color differences (ΔE) after exposure to vaping (p < 0.05). The LZr group displayed noticeably high ΔE values at all the distinct puff exposure intervals, with the highest ΔE value of (13.67) after 1500 puffs. The lowest (ΔE) values were observed in the PFM group after 250 and 500 puffs (0.85 and 0.97, respectively). With the exception of the group PEmax (p = 0.999), all groups produced readings of \"ΔE\" that indicated significant differences (p < 0.05) at various degrees of puff exposures. ECDs can noticeably alter the color of the dental ceramics affecting the esthetics of the patients. All the materials tested demonstrated significant color changes (ΔE > 3.33) above the clinically acceptable threshold, except for the PFM and PEmax group (ΔE < 3.33) which showed color stability after exposure to the ECDs.
摘要：
作为传统吸烟产品的替代,最近增加了对电子烟或电子烟装置(ECD)的使用。通过记录CIELAB坐标（L*a*b*）并使用分光光度计计算总色差（ΔE）值，在这项体外研究中，研究了ECD对当代美学牙科陶瓷的影响。总共制备了来自五种不同（n=15）牙科陶瓷材料（可压制陶瓷（PEmax）；压制和层状陶瓷（LEmax）；层状氧化锆（LZr）；整体氧化锆（MZr）和与金属融合的瓷（PFM））的75个（N=75）标本，并暴露于ECD产生的气溶胶中。使用分光光度计以六个时间间隔进行颜色评估（0=基线；250抽吸曝光；500抽吸曝光；750抽吸曝光；1000抽吸曝光；1250抽吸曝光；和1500抽吸曝光）。通过记录L*a*b*并计算总色差(ΔE)值，数据已被处理。使用用于成对比较的单向ANOVA和Tukey程序来评估测试陶瓷之间的色差(p<0.05)。所有测试材料在暴露于vaping后表现出显著的色差(ΔE)(p<0.05)。LZr组在所有不同的喷烟暴露时间间隔均显示出明显较高的ΔE值，1500次抽吸后，ΔE值最高为(13.67)。在250次和500次抽吸后，PFM组中观察到最低（ΔE）值（分别为0.85和0.97）。除了组PEmax（p=0.999），所有组产生的“ΔE”读数表明在不同程度的抽吸暴露下存在显着差异（p<0.05）。ECD可以明显改变牙科陶瓷的颜色，从而影响患者的美学。所有测试的材料显示出高于临床可接受阈值的显著颜色变化(ΔE>3.33)。除了PFM和PEmax组(ΔE<3.33),其在暴露于ECD后显示颜色稳定性。
