What is the ANB measurement for a patient with Class II div I malocclusion?

The ANB angle is an important measurement used in orthodontics to assess skeletal relationships between the maxilla and mandible. It is calculated by taking the difference between the angle of the A-point (the most anterior point on the maxilla) and the angle of the B-point (the most anterior point on the mandible) with reference to the N-point (nasal point).

For a patient with Class II division I malocclusion, the skeletal relationship typically shows a protruded maxilla relative to the mandible. This often yields a positive ANB angle, indicating that the maxilla is positioned forward compared to the mandible.

In this specific case, a measurement such as +8 indicates a significant forward positioning of the maxilla relative to the mandible, which is consistent with a Class II division I occlusion. Patients with this type of malocclusion frequently exhibit a pronounced overjet, as their upper incisors may be more protruded and the lower incisors less prominent.

Thus, the measurement of +8 reflects the typical skeletal profile for this classification of malocclusion, making it the correct answer.