Wits Appraisal — NDEB AFK MCQ
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Correct answer: C — The anteroposterior relationship between the maxilla and mandible using the occlusal plane as a reference
The Wits appraisal (Jacobson, 1975) assesses the anteroposterior jaw relationship by dropping perpendiculars from Point A and Point B onto the occlusal plane (or bisecting occlusal plane). The distance between these perpendiculars (AO-BO) indicates the AP skeletal relationship. Normal values: -1 mm for females, 0 mm for males. It was developed to overcome the limitations of the ANB angle, which can be affected by the vertical position of Nasion.
Reference: Proffit – Contemporary Orthodontics, 6th ed., 2019