You sound like me, I had TMJ problems as a teenager. My jaw clicked and one side of my face dropped a bit. I had extensive orthodontics beginning when I was 17 instead of surgery which didn't fix the problem and left me with really short roots on my teeth - this is called root resorption and it can be caused by excessive orthodontic work. But it did change my face shape considerably, it pulled my lower jaw back and my face looked like it had cheekbones and was less round. When I was 30 I had braces again for 2 years, my jaw was so painful that I couldn't open my mouth wide or chew. I am 33 now and it is all fixed except for a bit of clicking, but the roots on my teeth are very short. I also had chemotherapy and that damaged my teeth too.
