Anatomy & Histology · single question

Gonion (Go) and Menton (Me) define which plane on a lateral cephalogram?

  1. Mandibular plane
  2. Occlusal plane
  3. Frankfort horizontal plane
Show answer and explanation

Correct answer: A. Mandibular plane

Go–Me (Go–Gn) = mandibular plane on the lateral ceph.
  • A. Correct. The Go–Me (or Go–Gn) line is the mandibular plane.
  • B. The occlusal plane runs through the occlusal contacts, not Go–Me.
  • C. Frankfort horizontal is Porion–Orbitale, not Go–Me.

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