Class 2 - Div 1 - Adolescent Treatment
When the top teeth are ahead of the lowers (Class II) and the front teeth are flared out too much (buck teeth).
Buck Teeth - Top Teeth Flared with Lower Jaw Retrusive
A good test to see if the top teeth stick out too much is to view the patient with the lower jaw pushed far enough forward so that the top and bottom front teeth make contact. If that looks good, the problem is probably that the lower is too far back; otherwise, it is some degree of upper teeth protrusion.
Because his profile was improved when he brought his lower jaw forward, the decision was made to have him wear a functional appliance along with braces, hoping to encourage as much forward lower jaw growth as possible. The appliance also allows the teeth to move faster because the teeth are held apart on flat planes.
The space between his front teeth is closed, his lips now close comfortably over his teeth, his profile is improved and he certainly has a wonderful smile. When it comes to nice results, cooperation is everything.