In Vivo Evaluations of Inter-Observer Reliability Using VITA Easyshade® Advance 4.0 Dental Shade-Matching Device.
OBJECTIVE
The aim of this study was to evaluate the inter-observer reliability of dental shade-matching device using an in vivo model.


METHODS
Four observers who were well trained in color assessment and handling of the dental shade-matching device determined teeth color and CIE-Lab values on maxillary right central incisors in 10 patients with completely healthy and intact dentitions. VITA Easyshade® Advance 4.0 shade-matching device was utilized to measure the central region of the labial surface of all investigated teeth, twice by each observer. The inter-observer reliability of the measurements was observed and deviations between Lab and [Formula: see text]E values between the observers were calculated. Intraclass correlation coefficients (ICCs) were used to analyze inter-observer reliability.


RESULTS
One-way ANOVA showed no statistically significant differences in color measurement of four observers in all the measured values (p>0.05). Delta E values ranged from 3.018 to 5.234. Although some small differences existed, statistically significant differences between the observers were not found (p>0.05). Inter-observer ICCs were very high for all observers (from 0.651 to 0.992).


CONCLUSIONS
Inter-examiner reliability of measurements using VITA Easyshade® Advance 4.0 shade-matching device was acceptable. Apart from the digital equipment, a well trained observer seems to be crucial in order to achieve correct dental color measurement.
Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb.
Dubravka
D
Knezović
Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb.
Davor
D
Zlatarić
Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb.
Iva Ž
IŽ
Illeš
Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb.
Maja
M
Alajbeg
Department of Removable Prosthodontics, School of Dental Medicine, University of Zagreb.
Žagar
Color; Optical Devices; Tooth
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