Restorative & Materials · single question
Which color property of a tooth CANNOT be changed by bleaching or conventional restorative means?
Show answer and explanation
Correct answer: A. Hue (basic color — red, yellow, gray)
- A. Correct. HUE is the hardest color property to change. The basic hue (yellow, gray, orange) is determined by the tooth's composition. A gray (tetracycline) tooth remains gray in hue even after bleaching — bleaching lightens it but cannot fundamentally change the hue to yellow.
- B. Incorrect. Chroma CAN be reduced with bleaching or masked with lower-chroma restorations.
- C. Incorrect. Surface texture is a physical property that can be modified by polishing or restorative contouring.
- D. Incorrect. Value CAN be changed — bleaching increases value (lighter); restorations can be matched to desired value.
Practice Restorative & Materials questions Restorative & Materials study notes