European Journal of Prosthodontics and Restorative Dentistry

Brightness (Value) Sequence for the Vita Lumin Classic™ Shade Guide Reassessed

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Cover Date

September 2005

Print ISSN

0965-7452

Electronic ISSN

2396-8893

Vol

13

Issue

3

Abstract

The purpose of this study was to locate the 16 shade tabs from the Vita Lumin ‘Classic’ shade guide within the quantitative Luminosity, R, G and B scales (0–255 scales) using Photoshop® software. A new value order arranged according to the Photoshop® scale demonstrated a more linear relationship between the 16 shade tabs than the order given by the manufacturer. A Brightness Index representing the percentage difference in value between pairs of reordered shade tabs is suggested as a more realistic determinant of change in shade tab value.
KEY WORDS: Brightness; value; shade guide