Hashemikamangar Sedighe Sadat, Valizadeh Sara, Mahmoudi Nahavandi Alireza, Hasani Tabatabaei Masoomeh, Daryadar Marzieh
Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
Front Dent. 2021 Nov 25;18:41. doi: 10.18502/fid.v18i41.8013. eCollection 2021.
This study aimed to develop a new method for measurement of florescence and compare the fluorescence of some clinical dental ceramics in different thicknesses. Forty-eight samples of feldspathic (Vita VM9, A2), IPS e.max (Ivoclar HT, A2), zirconia (Korox Zircostar, A2) and Enamic (Vita A2) ceramics were used in this study in 0.5 and 1 mm thicknesses. The fluorescence of the samples was measured by using a developed technique. The results were analyzed by two-way ANOVA and Duncan post-hoc test. P<0.05 was considered significant. Enamic, feldspathic and e.max ceramics had significantly different fluorescence in descending order (P=0.000). Fluorescence of ceramics increased with an increase in their thickness from 0.5 to 1 mm (P=0.007). The results confirmed the applicability of the presented method for measurement of fluorescence of dental ceramics. While, the thickness of restoration determines the concentration of the fluorescent agent, some additional technical information is required for justification of the observed trend in the studied ceramics.
本研究旨在开发一种测量荧光的新方法，并比较一些临床牙科陶瓷在不同厚度下的荧光。本研究使用了48个样本，包括长石质陶瓷（维他VM9，A2色）、IPS e.max陶瓷（义获嘉HT，A2色）、氧化锆陶瓷（科洛克斯锆之星，A2色）和Enamic陶瓷（维他A2色），厚度分别为0.5毫米和1毫米。通过一种开发的技术测量样本的荧光。结果采用双向方差分析和邓肯事后检验进行分析。P<0.05被认为具有统计学意义。Enamic陶瓷、长石质陶瓷和e.max陶瓷的荧光存在显著差异，从高到低依次排列（P = 0.000）。陶瓷的荧光随着厚度从0.5毫米增加到1毫米而增强（P = 0.007）。结果证实了所提出的方法适用于测量牙科陶瓷的荧光。虽然修复体的厚度决定了荧光剂的浓度，但对于所研究陶瓷中观察到的趋势，还需要一些额外的技术信息来进行解释。
