I am curious as to why my jaw vibrates and lock for several seconds on a daily basis maybe once or twice? i don't have health insurance so any answers will be appreciated... it doesn't hurt much but its very wierd and happens periodically.

Any : Any number of factors can cause your jaw muscles to become tight and spasm, such as direct trauma, like a car accident. If you clench your jaw or grind your teeth, that will cause your jaw muscles to tighten, too. A jaw misalignment, even minor, can put the jaw muscles into continuous spasm. Sometimes something seemingly harmless, like gum chewing, might set off muscle spasms in your jaw. There are approximately many muscles that attach to the jaw, skull, and neck. Any muscle dysfunction can restrict blood flow in the blood vessels that pass through the muscles, as well as compress the nerves that also run through the muscles. This can cause pain in the jaw, ear, eyes, face, sinuses, teeth, neck, and shoulders, as well as all types of headaches. Muscles that are locked into deep spasms become very hard, and do not move or stretch like normal, relaxed muscle. If the muscles surrounding your jaw joint are in deep enough spasm, they will prevent the mouth from opening normally. Once these muscle spasms are inactivated, the mouth should regain normal function. You should definitely seek the help of a professional-a dentist, oral surgeon or even a physician. It is extremely hard to try and treat over the web. After seeing a health care professionalmany of your questions may be answered, also you may have more question but not properly diagnosing the problem will only make it impossible to coorrectly treat the problem. Good luck!