title: Interdevice agreement of eight equivalent dental color measurement devices.
abstract: OBJECTIVE
  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.
  
  
  CONCLUSIONS
  This in vitro study showed that the color-measuring devices used were suitable for determining shade with high repeatability.
  
  
  CONCLUSIONS
  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.
authors: Department of Prosthetic Dentistry, University Medical Center of the Johannes Gutenberg University, Augustusplatz 2, 55131, Mainz, Germany. michael.weyhrauch@unimedizin-mainz.de.
authors: M
authors: M
authors: Weyhrauch
authors: Department of Prosthetic Dentistry, University Medical Center of the Johannes Gutenberg University, Augustusplatz 2, 55131, Mainz, Germany.
authors: C
authors: C
authors: Igiel
authors: Department of Prosthetic Dentistry, University Medical Center of the Johannes Gutenberg University, Augustusplatz 2, 55131, Mainz, Germany.
authors: A M
authors: AM
authors: Pabst
authors: Department of Prosthetic Dentistry, University Medical Center of the Johannes Gutenberg University, Augustusplatz 2, 55131, Mainz, Germany.
authors: S
authors: S
authors: Wentaschek
authors: Department of Prosthetic Dentistry, University Medical Center of the Johannes Gutenberg University, Augustusplatz 2, 55131, Mainz, Germany.
authors: H
authors: H
authors: Scheller
authors: Department of Prosthetic Dentistry, University Medical Center of the Johannes Gutenberg University, Augustusplatz 2, 55131, Mainz, Germany.
authors: K M
authors: KM
authors: Lehmann
mesh_terms: D002516:Ceramics; D003124:Colorimetry / Q000295:instrumentation*; D003442:Crowns; D003748:Dental Equipment; D006801:Humans; D066298:In Vitro Techniques; D015203:Reproducibility of Results; D014070:Tooth / Q000033:anatomy & histology*
keywords: CIE L*a*b*; Color measurement; Interdevice agreement; Spectrophotometer; VITA Easyshade Advance