According to the recall source, which anatomic reference can be used to help determine the VALUE when selecting crown shade?

Correct answer: A. The sclera of the patient's eyes

• A. Per the recall source. The sclera is sometimes used as a chairside reference for the brightness (value) end of the scale, since it represents a naturally high-value white in the patient's own face.
• B. Incorrect. Nail beds are not a recognised shade reference.
• C. Incorrect. Lip vermilion provides colour context for the smile but is not a value reference.
• D. Incorrect. Palatal mucosa is not used for shade determination.

Note: 📌 Standard shade-taking principles remain the higher-yield content: select shade at the START of the appointment before dehydration, under natural or colour-corrected light (5500 K), in under 5 seconds, at eye level, with the patient's lipstick removed. Match VALUE first, then chroma, then hue.