Orthodontics · single question
When viewing a patient's face from an extra-oral lateral perspective, which anatomical planes can be assessed?
Show answer and explanation
Correct answer: D. Anteroposterior and Vertical planes
- A. ❌ Both AP and Vertical planes are visible laterally — not just Vertical.
- B. ❌ Transverse is not well-assessed laterally.
- C. ❌ The transverse plane (left-right symmetry, midlines) is primarily assessed from the frontal/anterior view — not the lateral view.
- D. ✅ Correct. From the lateral (side) view, the ANTEROPOSTERIOR plane (lip protrusion, chin position, profile convexity) and VERTICAL dimension (facial height proportions) can be assessed. The transverse plane is assessed from the frontal view.