TMJ (Temporal Mandibular Joint) pain can manifest itself as jaw pain, muscle pain in the head and neck and as headaches. There are many reasons why your jaw may be sore. They may include pain from an infected tooth, irregular occlusion (i.e. the way your teeth close together), internal deformation of the temporal mandibular joint, stressed jaw muscles, a lack of posterior teeth, and many other reasons.
There are many options for treating TMJ problems. These include non-surgical methods such as wearing a specially fabricated night guard. The night guard gives good posture to your jaw joint allowing the muscles that you chew with to relax and relieves the pain and inflammation you are experiencing.
Body posture and musculoskelatal issues can also be a factor in TMJ pain. In addition to treating contributing dental issues, consulting with a physical therapist who specializes in TMJ pain can be very helpful to some patients.