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Clinical Oral Investigations

Published in:

01-06-2014 | Original Article

Comparison of the Easyshade Compact and Advance in vitro and in vivo

Authors: Andreas Zenthöfer, Tomas Cabrera, Nicoleta Corcodel, Peter Rammelsberg, Alexander J. Hassel

Published in: Clinical Oral Investigations | Issue 5/2014

Abstract

Objective

The objective of this study was to evaluate the repeatability, inter-examiner and inter-device reliability, and accuracy of the new VITA Easyshade Advance (ES-A) spectrophotometer in comparison with the Easyshade Compact (ES-C).

Methods

For the in vitro study, six porcelain disks of random shade mixtures were fabricated from VITA ceramic powders. To analyze the repeatability of the ES-C and ES-A, readings were obtained by one examiner for one porcelain disk and one shade tab (VITA 3D-Master). Measurements were repeated by two examiners to evaluate inter-examiner reliability. To assess accuracy, porcelain disks and shade tabs were measured with the ES-C and ES-A and by means of a spectroradiometer (SR). ∆E values between the shade tabs and disks were calculated. Differences between devices were evaluated by use of univariate analysis. Reliability and accuracy of both devices were also tested in a clinical setting. The intra-class correlation coefficient (ICC) was calculated for all assessments of reliability.

Results

Good agreement was observed for replicate measurements (ICC > 0.9), for inter-examiner reliability of the ES-A and ES-C (ICC > 0.9), and for inter-device agreement (ICC > 0.9). Univariate analysis revealed that ∆E values for the spectrophotometers were consistent (p = 0.783); spectroradiometrically measured ∆E was comparable, but the mean value was smaller than that for the spectrophotometers (p = 0.004). Clinical inter-device agreement was acceptable to high (ICC > 0.777). The accuracy of the ES-A was higher than that of the ES-C (p = 0.001).

Conclusion

Within the limitations of the experiment, the spectrophotometers tested enabled reliable and accurate measurement. In the clinical setting, however, the ES-A seems more accurate.

Clinical relevance

ES-C and ES-A can be valuable tools for the determination of tooth colors. Because of their good reliability, they should especially be used for the assessment of tooth color changes over time.

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Title: Comparison of the Easyshade Compact and Advance in vitro and in vivo
Authors: Andreas Zenthöfer
Tomas Cabrera
Nicoleta Corcodel
Peter Rammelsberg
Alexander J. Hassel
Publication date: 01-06-2014
Publisher: Springer Berlin Heidelberg
Published in: Clinical Oral Investigations / Issue 5/2014
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI: https://doi.org/10.1007/s00784-013-1118-9

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Springer Medicine

Comparison of the Easyshade Compact and Advance in vitro and in vivo

Abstract

Objective

Methods

Results

Conclusion

Clinical relevance

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Objective

Methods

Results

Conclusion

Clinical relevance

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