This is the orthodontic consideration and treatment of the upper and lower jaw relationship. If the relationship is normal, this is called a Class I skeletal relationship. If the lower jaw is behind the upper jaw (back towards the ears) then this is called a Class II skeletal relationship. If the upper jaw is behind the lower teeth, giving the patient a bulldog appearance, then this is called a Class III skeletal relationship. If the teeth are the only problem

Splint therapy to correct a TMJ with a displaced articular disc will almost always cause the back upper and lower teeth to have a space between them. Sometimes this space can be quite large because the teeth and jaw misalignment was quite large. Braces are generally recommended after TMJ splint therapy to close this gap and realign the teeth into a position that favors a healthy jaw joint. In the image pictured, the splint is left in place and rubber