You should go to your General Dentist (or a dentist specialising in TMD) and get fitted with an occlusal splint
. This stops clenching and grinding
. Prolonged clenching and grinding
can actually cause TMD, cause it displaces the joints. Muscle relaxants. such as Valium, may aslo help the muscle spasms.
You may also have a back problem, because the muscle that leads to your jaw joint originates at the middle of your back.