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International Journal of Periodontics & Restorative Dentistry
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Int J Periodontics Restorative Dent 38 (2018), No. 3     13. Apr. 2018
Int J Periodontics Restorative Dent 38 (2018), No. 3  (13.04.2018)

Page 397-403, doi:10.11607/prd.3430, PubMed:29641629


Color Compatibility of Gingival Shade Guides and Gingiva-Colored Dental Materials with Healthy Human Gingiva
Sarmast, Nima D. / Angelov, Nikola / Ghinea, Razvan / Powers, John M. / Paravina, Rade D.
The CIELab and CIEDE2000 coverage error (ΔE*COV and ΔE'COV, 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 / ΔE'COV 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.