Name the malocclusion that includes a convex facial profile.

Name the malocclusion that includes a convex facial profile.

• A. II/2 class
• B. II/1 class
• C. III class (skeletal form)
• D. I class

Answer: (B)

A convex facial profile comes from a forward-positioned upper jaw and lips relative to the lower jaw. In Class II Division 1 malocclusion, the mandible is retruded relative to the maxilla and the upper incisors are proclined, which pushes the upper lip forward and enhances the convex look of the profile. By contrast, Class II Division 2 features retroclined upper incisors and often a flatter or even straight-to-concave profile; skeletal Class III has a concave profile due to mandibular prognathism, and Class I usually presents with a more balanced, straight profile. So the pattern most associated with a convex facial profile is Class II Division 1.

A convex facial profile comes from a forward-positioned upper jaw and lips relative to the lower jaw. In Class II Division 1 malocclusion, the mandible is retruded relative to the maxilla and the upper incisors are proclined, which pushes the upper lip forward and enhances the convex look of the profile. By contrast, Class II Division 2 features retroclined upper incisors and often a flatter or even straight-to-concave profile; skeletal Class III has a concave profile due to mandibular prognathism, and Class I usually presents with a more balanced, straight profile. So the pattern most associated with a convex facial profile is Class II Division 1.