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   Offical Journal of The Academy of Osseointegration

 
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Volume 38 , Issue 3
May/June 2018

Pages 397403


Color Compatibility of Gingival Shade Guides and Gingiva-Colored Dental Materials with Healthy Human Gingiva

Nima D. Sarmast, DDS, MS, MPH/Nikola Angelov, DDS, MS, PhD/Razvan Ghinea, PhD/John M. Powers, PhD/Rade D. Paravina, DDS, MS, PhD


PMID: 29641629
DOI: 10.11607/prd.3430

The CIELab and CIEDE2000 coverage error (ΔE*COV and ΔECOV, respectively) of basic shades of different gingival shade guides and gingiva-colored restorative dental materials (n = 5) was calculated as compared to a previously compiled database on healthy human gingiva. Data were analyzed using analysis of variance with Tukey-Kramer multiple-comparison test (P < .05). A 50:50% acceptability threshold of 4.6 for ΔE* and 4.1 for ΔE was used to interpret the results. ΔE*COV /ΔECOV ranged from 4.4/3.5 to 8.6/6.9. The majority of gingival shade guides and gingiva-colored restorative materials exhibited statistically significant coverage errors above the 50:50% acceptability threshold and uneven shade distribution.


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