It is difficult to evaluate without any Xrays. But from the pic, we can see that even your teeth are worn out, they have strong roots. So I believe a good solution for you could be performing crowns, porcelain crowns, and of course it is possible to match your upper teeth color and fix your bite...
I assume the filling was done on the upper arch. It is very likely you have a hematoma, basically and internal bruise. There is a network of blood vessels in the area the dentist gave you the anesthetic. If the needle enters that area, which is very easy to do, it can cause the...
I would highly recommend you see someone who is an expert in the diagnosis and treatment of TMJ issues. It is important, before anything is done to your mouth, to know what is happening to this complicated joint. There are many things that could be the cause of your open bite....