Which term best describes the facial profile typical of class II / 1 malocclusion gnatic form?

Which term best describes the facial profile typical of class II / 1 malocclusion gnatic form?

• A. Convex profile
• B. Concave profile
• C. Rectilinear profile
• D. Slightly convex profile

Answer: (A)

A convex facial profile is typical in Class II/1 skeletal relationships because the mandible sits back relative to the maxilla. When you look at the side of the face, the soft-tissue contour from the forehead to the chin bows outward, indicating forward projection of the upper jaw or retrusion of the lower jaw. This sagittal imbalance creates that bulging, outward-curved profile. If the jaw relationship were opposite—mandible forward relative to the maxilla—you'd see a concave profile. A straight or only slightly curved profile would suggest a more harmonized or mild discrepancy, not the common Class II image.

A convex facial profile is typical in Class II/1 skeletal relationships because the mandible sits back relative to the maxilla. When you look at the side of the face, the soft-tissue contour from the forehead to the chin bows outward, indicating forward projection of the upper jaw or retrusion of the lower jaw. This sagittal imbalance creates that bulging, outward-curved profile.

If the jaw relationship were opposite—mandible forward relative to the maxilla—you'd see a concave profile. A straight or only slightly curved profile would suggest a more harmonized or mild discrepancy, not the common Class II image.