1986
DOI: 10.1016/0022-3913(86)90279-9
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Spectrophotometric analysis of color differences between porcelain systems

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Cited by 220 publications
(141 citation statements)
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“…Table 3 and Figures 1 and 2 show the results of ΔE from the two tested groups. Table 3 shows that the results from the aging treatments and polishing did not differ from each other with the combination of TPH3 and Whiteness HP, while the coloring and bleaching treatments, although not differing, presented significant differences compared with previous treatments when classified using the criteria presented by Seghi et al (16) and adapted by Reis et al (17) for analysis of color change. Analyzing the parameters of color using the L* a* b* coordinates, there was a decrease in brightness of TPH3 when aged and stained, the same increase when cleared and polished ( Fig.…”
Section: Stability Analysis Of Colormentioning
confidence: 90%
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“…Table 3 and Figures 1 and 2 show the results of ΔE from the two tested groups. Table 3 shows that the results from the aging treatments and polishing did not differ from each other with the combination of TPH3 and Whiteness HP, while the coloring and bleaching treatments, although not differing, presented significant differences compared with previous treatments when classified using the criteria presented by Seghi et al (16) and adapted by Reis et al (17) for analysis of color change. Analyzing the parameters of color using the L* a* b* coordinates, there was a decrease in brightness of TPH3 when aged and stained, the same increase when cleared and polished ( Fig.…”
Section: Stability Analysis Of Colormentioning
confidence: 90%
“…The total variation in color was calculated using the following formula: The clinical significance for the stability of color was determined using the criteria presented by Seghi et al (16) and adapted by Reis et al (17) for analysis of color change. When the ΔE was higher than 3.7, it was considered an easily visible difference.…”
Section: Stability Analysis Of Colormentioning
confidence: 99%
“…The appear ance of any restoration depends on outline form, surface form, translucency and colour. 1 Aesthetically superior restorations are now possible as a result of improvements in dental materi als and manufacturing techniques. However, one of the most challenging aspects of restorative dentistry is colour assess ment and its reproduction.…”
Section: Introductionmentioning
confidence: 99%
“…6 Moreover, visual assessment is often communicated to a labo ratory technician through the use of inadequate shade guides 7,8 and shade guides by the manufacturer may differ slightly. 1,7,8 Instruments such as spectrophotometers and colorimeters have been used in industrial and research settings for the evaluation and specifications of colour. Spectrophotometers measure the reflectance or transmittance factors of an object one wavelength at a time.…”
Section: Introductionmentioning
confidence: 99%
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