According to the National Institute of Dental and Craniofacial Research (NIDCR), temporomandibular joint disorders (TMJ), also referred to as temporomandibular disorders (TMD), are the most common source of chronic facial pain and jaw dysfunction. It is estimated that more than 10 million people in the United States are affected by temporomandibular joint problems.
There are two temporomandibular joints that connect the left and right sides of the lower jaw to the temporal bone. Both joints and their associated muscles, ligaments and tendons work together to allow for all manner of oral function as the jaw moves up and down, front to back and from side to side. Containing a shock-absorbing, soft disc that sits between the rounded condyles of both sides of the lower jaw and the corresponding concavities in the skull's temporal bone, the TMJ makes chewing, speaking, yawning and all jaw movements possible.
Since the TMJ is a joint with both up and down hinge-like movements, as well as side to side and front to back sliding motions to perform, it is often considered one of the most complicated joints in the body and one of the most difficult to treat when problems arise.
TMJ disorders can fall into one or more of the following three categories:
Myofascial pain- Refers to pain in the area of the jaw joint due to various causes of increased muscle tension and spasm
Internal derangement-Involves displacement of the disc, jaw dislocation or trauma to the condyles of the jaw
Degenerative joint disease -Arthritis
The risk for developing a TMJ problem is greater in the presence of long-term teeth grinding or bruxism, a jaw injury or various types of arthritis such as rheumatoid arthritis and osteoarthritis. Furthermore, the manifestations of a TMJ disorder can vary from person to person with a wide range of symptoms possible, including earaches, ringing in the ears (tinnitus), headaches, back and neck pain, vertigo, muscle spasms and joint tenderness as well as jaw pain, popping or grating sounds with jaw movement, jaw locking and limited jaw movement. For some people a TMJ disorder can be resolved within a relatively short period of time, while for others it will continue to persist despite extensive therapy.
When evaluating for the presence of a TMJ disorder, the dentist will perform a thorough clinical assessment of joint symptoms and function. Special radiographic imaging and other diagnostic tests will be ordered as needed. The treatment of a TMJ disorder may include oral appliances such as night guards or stabilization splints to alleviate strain on the joints. Other types of therapy may include steroid injections, occlusal adjustments as well as orthodontic or prosthodontic treatment to improve occlusion. In cases of persistent and serious TMJ problems, surgery may be recommended.
Methods of self-care can be helpful in alleviating some of the symptoms of a TMJ disorder. Patients are typically advised to eat soft foods, avoid extreme jaw movement such as wide yawning and gum chewing, to practice stress reduction and relaxation techniques and applying ice packs or moist heat as directed. If recommended, a patient should follow the dentist or therapist's instruction for gentle stretching exercises. The short-term use of over-the-counter, non-steroidal, anti-inflammatory drugs and pain medications may provide relief. If not the dentist or physician may prescribe stronger pain or anti-inflammatory drugs, muscle relaxants or anti-depressants.
Bruxism is the repetitive pressure of clenching and grinding of your teeth. The cause of bruxism is not always clear, but it is usually linked to the alignment of your teeth and other factors such as stress and anxiety.
Aside from headaches and physical tension you can have, bruxism is damaging to your teeth. The pressure often causes cracks in the enamel creating openings for bacteria to infiltrate the tooth causing cavities, root infections or even root fractures. If the tooth has a root fracture, it would need to be extracted. Bruzism can do great harm to existing dental restorations (like implants, crowns or bridges you may already have) resulting in unusual wear, cracks, breaks or complete failure.
NIGHTTIME DENTAL GUARD: Since there are different types of dental guards, Dr. Britten will evaluate your needs and prescribe the right one just for you. The night guard clips onto the teeth and separates the upper and lower jaw while you sleep to prevent the teeth from contacting. This treatment is only effective for those who nighttime clenchers and requires commitment to wearing it every night.
DAYTIME: Stress may be causing you to clench or grind your teeth throughout the day which leads to soreness in your jaw and temples or even a severe migraine. Botox®* trigger point therapy may be just the right treatment you need.
*or the equivalent brand XEOMIN® (incobotulinumtoxinA) is commonly used