Authors:	Staedt, Henning Mally, Eva Scheller, Herbert Wentaschek, Stefan Kämmerer, Peer Wolfgang Kasaj, Adrian Devigus, Alessandro Lehmann, Karl Martin
Title:	The reproducibility of electronic color measurements of the marginal gingiva
Online publication date:	10-May-2021
Year of first publication:	2021
Language:	english
Abstract:	INTRODUCTION This study evaluated the reproducibility of electronic color determination system evaluations of the marginal gingiva, which could be important for adhesive cervical fillings or prosthetic restorations that imitate the gingiva. MATERIAL AND METHODS In 50 subjects, the L*, a*, and b* color coordinates were evaluated five times at a point in the marginal area of a central incisor using different electronic color determination systems: (SP) Shadepilot, (ES) Easyshade, (CE) Crystaleye, and (SV) X-Rite. The mean color difference (ΔE) and its standard deviation between the five measurements from each participant were calculated separately for each device. Further ICC for interdevice reliability was determined. RESULTS The L*, a*, and b* color coordinates and ΔE values differed significantly among the systems (p < 0.001). Within each patient and measurement system, ΔE ranged from 1.4 to 3.2 (SD 1.1–2.5), L* from 2.6 to 5.7 (SD 2.6–5.7), a* from 11.9 to 21.3 (SD 3.6–3.9), and b* from 15.1 to 28.9 (SD 1.7–4.3). Interdevice reliability ranged between 0.675 and 0.807. CONCLUSIONS Color determination of the marginal gingiva using the electronic tooth color determination systems tested herein showed limited reproducibility. The results obtained with the different measurement systems differed enormously. CLINICAL RELEVANCE These results show that the electronic color measurement devices tested allow no high reproducible determination of color coordinates of the marginal gingiva.
DDC:	610 Medizin 610 Medical sciences
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 04 Medizin
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-5852
Version:	Published version
Publication type:	Zeitschriftenaufsatz
License:	CC BY
Information on rights of use:	https://creativecommons.org/licenses/by/4.0/
Journal:	Clinical oral investigations 25
Pages or article number:	145 150
Publisher:	Springer
Publisher place:	Berlin u.a.
Issue date:	2021
ISSN:	1436-3771
Publisher URL:	https://doi.org/10.1007/s00784-020-03345-x
Publisher DOI:	10.1007/s00784-020-03345-x
Appears in collections:	JGU-Publikationen