Central and lateral incisors are being prepared for full-coverage crowns. In the intraoral image, the mesial face of the canine (tooth #6 or #11) is visible next to the preparations. When choosing shade for these anterior crowns, which shade characteristic is MOST important to match to achieve a natural result?

Correct answer: C. Value (brightness) of tooth #10 (the adjacent unprepared lateral incisor)

• A. Chroma matching is important but subordinate to value; a mismatch in value is visually more obvious than a mismatch in chroma.
• B. Tooth #11 on the opposite side is used only for symmetry cross-check, not primary match.
• C. CORRECT — Value (brightness/lightness) is the single most important shade dimension, and it must be matched to the immediately adjacent natural tooth. Tooth #10 is the adjacent unprepared incisor and drives the perceived match. In shade selection, Value is chosen first, then Chroma, then Hue.
• D. The canine is more chromatic and yellow, but as a lateral reference it is less critical than the immediately adjacent central/lateral incisor.