Abstract
Objectives
The reproducibility of electronic color-measuring devices used in dentistry refers to the consistency of measurements of a single device and also that between identical devices. This in vitro study evaluated the short-term interdevice agreement of eight equivalent dental measurement devices.
Methods
The short-term repeatability of eight identical VITA Easyshade Advance color measurement devices was evaluated. Each device was used to quantify the Commission Internationale de l’Eclairage (CIE) L*a*b* color coordinates of ceramic disks, designed in accordance with guidelines set by the VITA Toothguide 3D-Master shade tab organization. Statistical analysis involved calculating the intraclass correlation coefficients (ICCs) and color differences (ΔE*) for corresponding measurements taken by the devices. In addition, the mean color difference from the mean (MCDM) was calculated for each color.
Results
All devices showed high ICCs for the color coordinates (L = 0.996, a = 0.993, b = 0.999). The ΔE* by shade ranged from 0.62 to 1.67. The MCDM by color-measuring device ranged from 0.11 to 0.23.
Conclusion
This in vitro study showed that the color-measuring devices used were suitable for determining shade with high repeatability.
Clinical relevance
The high interdevice agreement of the VITA Easyshade Advance means that dental professionals can use this device independently, without compromising the consistency and quality of color measurements.
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Dr. Michael Weyhrauch is an Assistant Professor at the Department of Prosthetic Dentistry, University Medical Center of the Johannes Gutenberg University, and holds a DMD degree.
Christopher Igiel is an Assistant Professor at the Department of Prosthetic Dentistry, University Medical Center, and holds a DMD degree.
Andreas Max Pabst is an Assistant Professor at the Department of Prosthetic Dentistry, University Medical Center, and holds a DMD degree.
Stefan Wentaschek is an Assistant Professor at the Department of Prosthetic Dentistry, University Medical Center, and holds a DMD degree.
Herbert Scheller is a Medical Director at the Department of Prosthetic Dentistry, University Medical Center, and holds DMD and PhD degrees.
Karl Martin Lehmann is an Assistant Professor at the Department of Prosthetic Dentistry, University Medical Center, and holds DMD and PhD degrees.
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Weyhrauch, M., Igiel, C., Pabst, A.M. et al. Interdevice agreement of eight equivalent dental color measurement devices. Clin Oral Invest 19, 2309–2318 (2015). https://doi.org/10.1007/s00784-015-1456-x
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DOI: https://doi.org/10.1007/s00784-015-1456-x