Harmonization of color measurements in dentistry

•Harmonization of total color measurements with tooth-colored specimens is validated.•Total color difference between sites significantly decreased upon harmonization.•Reflection spectra correction results in acceptable match among coordinating center and research sites. Natural teeth and tooth-color...

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Bibliographic Details
Published in:Measurement : journal of the International Measurement Confederation 2021-02, Vol.169, p.108504, Article 108504
Main Authors: Paravina, Rade Dušan, Aleksić, Aleksandar, Tango, Rubens Nisie, García-Beltrán, Antonio, Johnston, William Michael, Ghinea, Razvan Ionut
Format: Article
Language:English
Subjects:
Color harmonization
Color tolerance
Dental implants
Dental materials
Dentistry
Measuring instrument
Measuring instruments
Psychophysics
Quality control
Spectroradiometers
Teeth
Tooth-colored dental materials
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Summary:•Harmonization of total color measurements with tooth-colored specimens is validated.•Total color difference between sites significantly decreased upon harmonization.•Reflection spectra correction results in acceptable match among coordinating center and research sites. Natural teeth and tooth-colored dental materials are translucent and encompass a relatively narrow color range. Calibration of color measuring instruments using opaque ceramic tiles arises the question of suitability for dental application. The purpose of the study was to evaluate the effects of harmonization of color measurements among instruments with the same optical geometry (spectrophotometer - diffuse/8° or spectroradiometer −45°/0°). The newly proposed method aimed to create a standardized protocol and quality control tool for color measurements in dentistry using sets of standardized dental material specimens of different color and translucency. A total of 41 specimens were measured at a coordinating center (CC) and three research sites (RS). Total color differences between CC and RS exhibited significant reduction upon implementation of correction factors. The proposed harmonization using tooth-colored translucent materials proved to be valid.
ISSN:0263-2241
1873-412X
DOI:10.1016/j.measurement.2020.108504