Which facial profile is associated with a Class II Division I malocclusion according to the material?

Which facial profile is associated with a Class II Division I malocclusion according to the material?

• A. Convex profile
• B. Concave profile
• C. Straight profile
• D. Not pronounced convex profile

Answer: (A)

A convex facial profile is typical in Class II Division I malocclusion. In this pattern the upper jaw tends to be protrusive relative to the lower jaw, or the lower jaw is retrusive, so the midface and lips project forward while the chin sits back. This creates a side view that curves outward, giving a convex silhouette. That forward projection of the skeletal and dental components is what makes the profile look convex. A concave profile is more associated with Class III patterns, where the chin is forward or the midface is retrusive. A straight profile represents a balanced, evenly proportional relationship, not the pronounced forward projection seen here. The option about not being a pronounced convex aligns less with the typical facial appearance of Class II Division I.

A convex facial profile is typical in Class II Division I malocclusion. In this pattern the upper jaw tends to be protrusive relative to the lower jaw, or the lower jaw is retrusive, so the midface and lips project forward while the chin sits back. This creates a side view that curves outward, giving a convex silhouette. That forward projection of the skeletal and dental components is what makes the profile look convex.

A concave profile is more associated with Class III patterns, where the chin is forward or the midface is retrusive. A straight profile represents a balanced, evenly proportional relationship, not the pronounced forward projection seen here. The option about not being a pronounced convex aligns less with the typical facial appearance of Class II Division I.