Back Molar Teeth Touch at Rest.

My 2nd molars on both sides are rubbing against each other at rest. This has resulted in jaw tension and headaches. To the best of my knowledge, I don't have any other occasional issues apart from this. What are the options available to get this issue resolved. I do understand that I need to be evaluated by a dentist or an orthodontist, but I want to make sure that I'm aware of all the treatment options before visiting one.