Can you tell me if my TMJ can be cured with a chiropractor?

Probably not. A chiropractor relieves pain by manipulating the muscles and skeleton. However, one usually has to continue treatment over many visits, sometimes indefinitely because adjusting done by a chiropractor, especially in the case of TMJ dysfunction, only addresses the symptoms. The source of the dysfunction needs to be diagnosed and corrected. This usually is a bite imbalance. See a TMJ specialist.
Depends on cause. If it is due to tense muscles, then yes, manipulation can help a great deal. If it is due to arthritis or intra-discal injury, then it most likely will not help.
Symptoms may improve. Chiropractic treatment of TMJ is like a form of physical therapy. You may experience improvement of symptoms. But not "cure".