Shade selection and value control.

Abstract

The purpose of this article is to describe, in general terms, the variables that may influence the accurate assessment of shade selection prior to the fabrication of a ceramic restoration, and to outline a specific procedure for "shade selection," to determine the appropriate porcelain powders used in recreating the desired optical properties of the natural dentition. Special attention is dedicated to the control of the 'value' level, which is of paramount importance in achieving a vital, life-like appearance that is in harmony with surrounding dentition. By controlling and maintaining one light source, we can eliminate at least one variable in the shade taking process. By identifying the location of the individual components utilized to re-create natural dentition, one may render greater overall accuracy in shade reproduction. Understanding the limitations of standard shade guides, and increasing color communication with the use of custom shade guides has distinct advantages for achieving desired shades.