Effect of White Light-Emitting Diode Illuminants Recommended by the CIE on Colors of Dental Ceramic Materials

Author:

Ruiz-López Javier12ORCID,Melgosa Manuel1ORCID,Ghinea Razvan123ORCID,Tejada-Casado Maria12,Pop-Ciutrila Ioana-Sofia4,Pérez María M.12

Affiliation:

1. Department of Optics, Faculty of Science, Campus Fuentenueva, Edificio Mecenas, s/n., University of Granada, 18071 Granada, Spain

2. Instituto de Investigación Biosanitaria ibs.GRANADA, 18011 Granada, Spain

3. Department of Physics, Faculty of Sciences, University of Craiova, 13 AI Cuza Street, 200585 Craiova, Romania

4. Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 33 Motilor Street, 400001 Cluj-Napoca, Romania

Abstract

The aim of this study was to evaluate color inconstancy of dental ceramics under the white light-emitting diode illuminants recently proposed by the CIE. From spectral reflectance factors of 18 dental ceramics (VST, NSP, and IEC; shades A1, A2, A3, A3.5, B2, and C2), the corresponding colors under illuminant D65 and CIE 1931 Standard Colorimetric Observer were computed for all samples, using the chromatic adaptation transform CIECAT16. CIEDE2000 color differences between dental ceramics illuminated by CIE D65 standard illuminant and different white LED illuminants were calculated. Perceptibility and acceptability thresholds (PT00 and AP00) in dental ceramics were used to analyze color changes. Color gamut size was within the same range for all illuminants and for all ceramics, since MCDM computed values were 4.1–4.4 for VST, 4.0–4.2 for NSP, and 4.3–4.6 for IEC. For all ceramics and shades, the color inconstancies were higher than 50:50% PT00 and, in general, lower than 50:50% AT00. The effect of CIE-proposed LED illuminants on dental ceramic is perceptible and slightly lower than on natural teeth. Dental clinicians should consider these lighting effects on the visual appearance of dental ceramics.

Funder

FEDER/Junta de Andalucía-Consejería de Transformación Económica, Industria, Conocimiento y Universidades, Spain

Ministerio de Ciencia, Innovación y Universidades, Spain

Junta de Andalucía, Spain

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

Reference34 articles.

1. (2016). International Organization for Standardization—Technical Report(E): Dentistry—Guidance on Color Measurements (Standard No. ISO/TR28642:2016).

2. The International Commission on Illumination (2018). CIE 015:2018 Colorimetry, The International Commission on Illumination. [4th ed.].

3. Fairchild, M.D. (2013). Color Appearance Models, Wiley. [3rd ed.].

4. Della Bona, A. (2020). Color and Appearance in Dentistry, Springer. [1st ed.].

5. The Development of the CIE 2000 Colour-Difference Formula: CIEDE2000;Luo;Color Res. Appl.,2001

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