Color compatibility between dental structures and three different types of ceramic systems

Ioana-Sofia Pop-Ciutrila; Razvan Ghinea; Horatiu A Colosi; Javier Ruiz-López; Maria M Perez; Rade D Paravina; Diana Dudea

doi:10.1186/s12903-021-01404-7

Color compatibility between dental structures and three different types of ceramic systems

BMC Oral Health. 2021 Feb 17;21(1):75. doi: 10.1186/s12903-021-01404-7.

Authors

Ioana-Sofia Pop-Ciutrila¹, Razvan Ghinea^{2

3

4}, Horatiu A Colosi⁵, Javier Ruiz-López⁶, Maria M Perez^{6

7}, Rade D Paravina⁸, Diana Dudea⁹

Affiliations

¹ Department of Conservative Dentistry and Endodontics, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 33 Motilor Street, 400001, Cluj-Napoca, Romania.
² Department of Optics, Faculty of Science, University of Granada, Campus de Fuentenueva, s/n, 18071, Granada, Spain. rghinea@ugr.es.
³ Houston Center for Biomaterials and Biomimetics (HCBB), University of Texas School of Dentistry at Houston, 7500 Cambridge St., Ste. 5350, Houston, TX, USA. rghinea@ugr.es.
⁴ Department of Physics, Faculty of Sciences, University of Craiova, 13 AI Cuza Street, 200585, Craiova, Romania. rghinea@ugr.es.
⁵ Department of Medical Informatics and Biostatistics, Faculty of General Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 6 Louis Pasteur Street, 400349, Cluj-Napoca, Romania.
⁶ Department of Optics, Faculty of Science, University of Granada, Campus de Fuentenueva, s/n, 18071, Granada, Spain.
⁷ Houston Center for Biomaterials and Biomimetics (HCBB), University of Texas School of Dentistry at Houston, 7500 Cambridge St., Ste. 5350, Houston, TX, USA.
⁸ Department of Restorative Dentistry and Prosthodontics, Houston Center for Biomaterials and Biomimetics (HCBB), University of Texas School of Dentistry at Houston, 7500 Cambridge St., Ste. 5350, Houston, TX, USA.
⁹ Department of Prosthodontics and Dental Materials, Iuliu Hatieganu University of Medicine and Pharmacy, 32 Clinicilor Street, 400006, Cluj-Napoca, Romania.

Abstract

Background: To assess color compatibility between dental structures (human enamel and dentine) and three different types of ceramic systems.

Methods: Samples (1 and 2 mm-thick) of extracted tooth (containing dentine and enamel areas) and three ceramic systems with different shades and opacities (HT-High Translucent, T-Translucent) were prepared for this study: Vita Suprinity-VS (HT, T; A1, A2, A3, A3.5, B2, C2, D2) (Vita Zahnfabrik); Vita Enamic-VE (HT, T; 1M1, 1M2, 2M2, 3M2) (Vita Zahnfabrik) and Noritake Super Porcelain EX-3-NKT (A1, A2, A3, A3.5, B2, C2, D2) (Kuraray Noritake Dental). Reflectance measurements of all samples were performed over black backgrounds using a non-contact spectroradiometer (SpectraScan PR-670, Photo Research) under a CIE 45°/0° geometry. CIE L*a*b* color parameters were measured and CIELAB/CIEDE2000 color differences (ΔE₀₀/ΔE^*_ab) and corresponding Coverage Error (CE) of ceramic system for dentine or enamel samples were calculated. Color data was analyzed using one-way ANOVA and post-hoc multiple comparisons tests. CE values were interpreted by comparisons with available 50:50% acceptability color threshold (AT) for dentistry.

Results: Statistically significant differences in lightness were found among all ceramic systems and human dentine (p < 0.001), while no significant differences were registered between enamel and VSHT, T and VEHT. 1 mm dentine showed no statistical differences with VST and VSHT for a* coordinate, while 2 mm dentine showed no significant differences (p > 0.05) with VEHT. Thin samples (1 mm) of dentine and enamel showed significant statistical differences (p < 0.05) for b* coordinate with less translucent materials (NKT, VET and VST). For dentine samples, none of the ceramic materials provided a CE lower than AT. VSHT provided the best CE for 1 mm-thick (CE₀₀ = 1.7, CE_ab = 1.9) and for 2 mm-thick (CE₀₀ = 2.3; CE_ab = 2.5) enamel samples.

Conclusions: Color coordinates of evaluated esthetic ceramic systems were statistically different from those of human dentine in almost all cases. The evaluated ZrO₂ lithium silicate glass-ceramic (VS), with its two levels of translucency, provided lower CE values with human enamel samples while conventional feldspathic ceramic (NKT) and hybrid ceramic systems (VE) demonstrated a better color compatibility with dentin samples.

Keywords: Color coordinates; Coverage error; Dental ceramics; Dentine; Enamel; Spectroradiometer.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Ceramics*
Color
Dental Porcelain*
Humans
Materials Testing

Substances

Dental Porcelain