Prosthodontics & Occlusion · single question

When selecting a shade for an anterior crown, the tooth should be viewed:

  1. At eye level, quickly, on a hydrated tooth in natural light
  2. After prolonged isolation when the tooth is dehydrated
  3. Under the operatory light only
  4. After bleaching that same day
Show answer and explanation

Correct answer: A. At eye level, quickly, on a hydrated tooth in natural light

  • A. Correct. Shade is taken at eye level, early in the appointment, with the tooth moist, under natural/color-corrected light, using brief glances to avoid eye fatigue.
  • B. Dehydrated teeth appear lighter/whiter, causing shade errors.
  • C. Operatory light alone distorts color; natural light is preferred.
  • D. Recent bleaching transiently lightens teeth and misleads shade selection.

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