Which angle denotes the relative position of the maxilla and mandible to each other?

The ANB angle is an important cephalometric measurement used to assess the relationship between the maxilla (upper jaw) and the mandible (lower jaw). This angle is defined by the points A (the A-point on the maxilla), N (the nasion), and B (the B-point on the mandible). By measuring the ANB angle, one can determine if the maxilla is positioned more anteriorly or posteriorly relative to the mandible.

A positive ANB angle indicates that the maxilla is positioned more anteriorly than the mandible, often associated with Class I occlusion. A smaller or negative ANB suggests that the mandible is more forward relative to the maxilla, which could indicate Class III malocclusion. Thus, the ANB angle is a critical tool in orthodontics, particularly in diagnosing and planning treatment for skeletal relationships between these two important structures in the dental and facial framework.

In contrast, the FM angle (Frankfort Mandibular plane angle) is related to the orientation of the mandible in relation to the cranial base, while the SN angle (Sella-Nasion angle) describes the inclination of the maxilla relative to the cranial base. The term "age-related angle