What is the most inferior midline point on the mandibular symphysis?

The most inferior midline point on the mandibular symphysis is identified as Menton (Me). In cephalometric analysis, Menton is defined specifically as the lowest point of the mandible, situated on the mid-symphysis. This point is crucial in various orthodontic assessments and treatment planning because it provides a reliable reference for measuring vertical relationships in the facial structure.

To clarify why Menton is the correct answer, it is necessary to establish its anatomical significance relative to the other points. Gnathion (Gn) is defined as the most inferior point on the bony contour of the mandible, but it is not necessarily located on the midline; it represents the tip of the chin. Infradentale (Id) is a point located at the apex of the incisors on the mandibular symphysis, which is above the most inferior point. Gonion (Go), on the other hand, denotes the midpoint of the angle of the mandible and is located posteriorly on the jaw, further away from the midline of the mandible.

Thus, Menton is distinctly positioned as the lowest point on the mandibular symphysis, making it the correct answer when determining the most inferior midline landmark in