使用立体放大镜获得的图像测量树脂复合材料颜色的可靠性。

IF 1.5 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Brazilian oral research Pub Date : 2024-05-13 eCollection Date: 2024-01-01 DOI:10.1590/1807-3107bor-2024.vol38.0032
Alexsandra Santos Albuquerque, Rafaella Bragança, Oscar Emilio Pecho, André Luis Faria-E-Silva
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引用次数: 0

摘要

本研究使用电荷耦合器件 (CCD) 相机和立体放大镜获得的图像,评估了颜色测量方法的可靠性。使用复合 Filtek Z350 XT(色调 DA1、DA2、DA3 和 DA4)制作了圆盘状试样(n = 3)。使用分光光度计 SP60 在白色和黑色背景上测量试样的 CIELAB 色坐标。使用安装在立体放大镜上的 CCD 相机拍摄相同标本的图像。使用图像处理软件测量图像的颜色(红-绿-蓝 [RGB])并转换为 CIELAB 坐标。对于每个颜色坐标,使用线性回归预测 SP60 的值来调整图像数据。计算样本的牙科白度指数(WID)和半透明参数(TP00),以及成对色调之间的色差(ΔE00)。数据分析采用重复测量方差分析和 Tukey 后检验(α = 0.05)。使用放大镜获得的图像往往比实际颜色更深更红。数据调整后的 WID、ΔE00 和 TP00 值与分光光度计观察到的值相似。只有在黑色背景上比较 DA1 和 DA3 的色调 DA3 的 WID 和 ΔE00 时才会观察到差异。不过,这些差异与临床无关。使用立体放大镜拍摄的图像调整数据被认为是一种可行的颜色测量方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Reliability of the color measurement of resin composites using images obtained using a stereoscopic loupe.

This study assessed the reliability of a color measurement method using images obtained from a charge-coupled device (CCD) camera and a stereoscopic loupe. Disc-shaped specimens were created using the composite Filtek Z350 XT (shades DA1, DA2, DA3, and DA4) (n = 3). CIELAB color coordinates of the specimens were measured using the spectrophotometer SP60 over white and black backgrounds. Images of the same specimens were taken using a CCD camera attached to a stereoscopic loupe. The color of the image was measured (red-green-blue [RGB]) using an image processing software and converted to CIELAB coordinates. For each color coordinate, data from images were adjusted using linear regressions predicting those values from SP60. The whiteness index for dentistry (WID) and translucency parameter (TP00) of the specimens as well as the color differences (ΔE00) among pairwise shades were calculated. Data were analyzed via repeated-measures analysis of variance and Tukey's post hoc test (α = 0.05). Images obtained using the loupe tended to be darker and redder than the actual color. Data adjustment resulted in similar WID, ΔE00, and TP00 values to those observed for the spectrophotometer. Differences were observed only for the WID of shade DA3 and ΔE00 for comparing DA1 and DA3 over the black background. However, these differences were not clinically relevant. The use of adjusted data from images taken using a stereoscopic loupe is considered a feasible method for color measurement.

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来源期刊
CiteScore
3.70
自引率
4.00%
发文量
107
审稿时长
12 weeks
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