SHOFU Gumy
for accurate shade taking

Optical illusions occur when our eyes and brain process visual information in ways that don’t match reality.

This happens because our brain constantly interprets shapes, colors, and backgrounds, sometimes leading to surprising results. Optical illusions remind us that “seeing” isn’t always believing.

Optical illusions during shade taking occur because the shade of natural teeth is influenced by the gingival color and the dark background in the oral cavity.

In general, natural teeth with a gingival background (reddish color) appear yellowish green compared to teeth without a gingival background (hue).
In addition, the shade guide appears brighter (value) in an intraoral environment where the background is dark.

• This causes an error from the original shade of the target tooth.
• We tend to judge target teeth as yellowish green and darker than their original shade.

The shade of the restoration made based on the incorrect information will not match the target tooth.

The use of Gumy during intraoral shade taking allows for more accurate shade taking by providing the same background conditions for the natural teeth and the shade guide.

When taking shade in the oral cavity.

• 1. Select the shade of Gumy that is closest to the patient’s gingival color
• 
• 2. Select three shade guides that are close to patient’s tooth color
• 
• 3. Insert three shade guides closest to the target tooth into the Gumy and perform shade taking
• 

Gingival Shade Guide

Gumy is used as a shade guide when reproducing the restoration of gingival area.
It can be used for both chairside shade-taking and laboratory work, facilitating dental color communication.

Gumy is available in 4 shades.

The shades are progressively darker, from light gingiva color to dark gingiva color, to accommodate a variety of cases.

The shade number is indicated at the upper right corner as Gumy No.1, Gumy No.2, Gumy No.3, Gumy No.4.
When shade taking, you can select the shade closest to the patient’s gingival color.