I've seen a TMJ specialist and he said that it could be the leading factor that caused my jaw line to shift to one side. As I have problems opening my mouth for eating/yawning as it locks up & jaw cracks. Not only that is the problem but also my left eye is lower and I have an over bite. I think having crooked teeth has lead to this I'm not sure. If I need surgery, what are the costs/procedures in Canada with health benefits? I'm 23 years old.