Abstract
IntroductionThis 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 methodsIn 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.ResultsThe 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.ConclusionsColor 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 relevanceThese results show that the electronic color measurement devices tested allow no high reproducible determination of color coordinates of the marginal gingiva.
Highlights
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
Color-measuring devices have been used to overcome the disadvantages of visual color matching, which include observer factors like color blindness, fatigue, light conditions, and health impairments
Only a few shade guide systems are available for evaluating the shade of gingival regions, and these are subject to coverage errors [9]
Summary
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. 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. Color-measuring devices have been used to overcome the disadvantages of visual color matching, which include observer factors like color blindness, fatigue, light conditions, and health impairments. These colormeasurement devices have the potential to detect colors more. This study evaluated the reproducibility of electronic color-determination system evaluations of the marginal gingiva (Figs. 1)
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