TMD (temporomandibular joint dysfunction) can be difficult to diagnose because the symptoms mimic many other disorders. Studies have confirmed that people who suffer from migraine pain and chronic headaches clench their jaws in balanced, centered positions. This causes extremely intense muscular contraction but little strain on the jaw. Nighttime jaw clenching usually goes unnoticed as well by patients- but this sets the stage for migraine pain and chronic headache pain as well as damage to teeth.
TMD/TMJ disorders can occur at any point in life, but that they are most commonly diagnosed in young adults between the ages of 20 and 40 years old. The American Association of Oral and Maxillofacial Surgeons also report that TMJ disorders are far more common among women than men. Though there is no way of knowing exactly how many people suffer from TMJ disorders (many go undiagnosed), the National Institute of Dental and Craniofacial Research estimates that approximately 10 million people in the U.S. currently suffer from TMJ conditions. Destruction to your teeth is another coincident result of clenching and grinding. Teeth can break or fracture due to clenching/grinding and also wear down over time. This wear may cause sensitivity due to the loss of enamel. Also, the teeth will become weaker from the loss of tooth structure from grinding.