Intra- and inter-brand color differences of denture teeth under different illuminations
| Autor: | Nick POLYCHRONAKIS, Panagiotis LAGOUVARDOS, Gregory POLYZOIS, Hien Chi NGO |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Journal of Applied Oral Science, Vol 28 (2020) |
| Druh dokumentu: | article |
| ISSN: | 1678-7765 1678-7757 |
| DOI: | 10.1590/1678-7757-2019-0693 |
| Popis: | Abstract Debonding, staining and wear are usually the reasons for denture teeth replacement by new ones from same or different brands. Objective This study investigates the possible differences in color of denture teeth of the same or different brands under different illuminations, since their metameric behavior in color under specific illumination may become unacceptable. Methodology For the purpose of this study, 10 denture teeth (#11), shade A3, of 4 different brands were selected (Creopal/KlemaDental Pro, Executive/DeguDent, Cosmo HXL/DeguDent, Ivostar/Ivoclar-Vivadent). Teeth stabilized in white silicone mold and the CIELAB color coordinates of their labial surface under 3 different illumination lights (D65, F2, A) were recorded, using a portable colorimeter (FRU/WR-18, Wave Inc). ΔE*ab values of all possible pairs of teeth of the same brand (n=45) or pair combinations of different brands (n=100) under each illumination light, in a dry and wet state were calculated. Data were analyzed statistically using 3-way ANOVA, Friedman’s and Wilcoxon’s tests at a significance level of α=0.05. Results The results showed that brand type affected significantly L*, a* and b* coordinates (p0.05). Intra-brand color differences ranged between 0.21-0.78ΔΕ* units with significant differences among brands (p |
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