Shade Guide

A shade guide is a standardized set of tooth-colored reference tabs used to select and communicate the color of prosthetic teeth. Shade guides provide a common language between the dental office and the lab, ensuring the technician fabricates teeth that match the patient’s desired or existing tooth color.

Common Shade Guide Systems

Vita Classical Shade Guide

The most widely used system, the Vita Classical guide organizes 16 shades into four hue families:

• A (reddish-brown) — A1, A2, A3, A3.5, A4
• B (reddish-yellow) — B1, B2, B3, B4
• C (gray) — C1, C2, C3, C4
• D (reddish-gray) — D2, D3, D4

Most dental labs default to Vita Classical notation. When you write “A2” on an Rx form, both you and the technician reference the same standard.

Vita 3D-Master

A more systematic shade guide that organizes shades by lightness (value) first, then chroma (saturation) and hue. The 3D-Master offers finer gradations and is considered more accurate for shade matching, but it’s less universally adopted than the Classical guide.

Manufacturer-Specific Guides

Some prosthetic tooth manufacturers provide shade guides matched specifically to their tooth product line. These guides are most accurate when selecting shades for that manufacturer’s teeth.

How to Take an Accurate Shade

Shade selection is one of the most subjective steps in prosthetic fabrication. These practices improve accuracy:

• Use natural light — Operatory lights, especially LEDs, can shift color perception. Take shade readings near a window in natural daylight whenever possible.
• Work quickly — Color perception fatigues after about 5 seconds of staring. Take a quick look, make your selection, then verify with a second glance after resting your eyes on a neutral surface (gray or blue).
• Hydrate the teeth — Dehydrated teeth appear lighter than their true shade. Take the shade before any procedures that dry out the teeth.
• Remove lipstick and bright clothing — Surrounding colors influence perception. Have the patient remove lipstick, and drape a neutral-colored bib.
• Take a photo — Photograph the shade tab held next to the teeth in natural light. This gives the technician a visual reference that’s more informative than the shade code alone.
• Note variations — Natural teeth aren’t uniform in color. The cervical third is typically darker (higher chroma) than the incisal third. If the patient has characteristic features (translucent incisal edges, white spots, surface texture), note these for the technician.

Shade Communication with Your Lab

When recording the shade on your Rx form:

1. Name the shade system — “Vita Classical A2” is unambiguous. Just writing “A2” is usually understood but specifying the system eliminates any doubt.
2. Note the patient’s age — Older patients generally have darker, more saturated teeth. If you want the prosthetic teeth to look age-appropriate, the technician needs this context.
3. Describe characterization — “Slight translucency at incisal edges,” “warm undertone,” “match slight wear on remaining naturals” — these descriptions help the technician make artistic decisions.
4. Include a photo — A shade photo with the tab held next to the teeth is the single most valuable communication tool for color matching.

Digital Shade Matching

Electronic shade-matching devices (spectrophotometers and colorimeters) remove subjectivity from shade selection by measuring the tooth’s color properties digitally. These devices provide Vita shade equivalents and numerical color coordinates (Lab* values) that can be communicated precisely to the lab. While not yet universal, digital shade matching is increasingly common in practices that prioritize esthetic accuracy.