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Temporomandibular (TM) Disorders - What Increases Your Risk

Risk factors for temporomandibular (TM) disorders include:

  • Stress and anxiety, which can cause facial and jaw muscle tension.
  • Repetitive habits, such as grinding your teeth (bruxism), clenching your teeth, excessive gum chewing, eating hard or chewy foods, and nail biting.
  • Habits that can cause muscle tension, such as sleeping on one side of your face or with your mouth open, opening your mouth wide when yawning or singing, or holding your head up by cradling your jaw in your hand.
  • Injury to the jaw or head. TM disorders can result from a direct blow to the jaw, chin, or head; whiplash to the head or neck; overstretching the jaw during dental work or surgery; or other injuries that may lead to joint damage or muscle tension.
  • Age and gender. TM disorders primarily affect people between the ages of 20 and 50. 1Women are more likely to report symptoms of TM disorder than men.

In the past, malocclusion and orthodontics were thought to cause or contribute to TM disorders. Similarly, orthodontics have been used to treat TM disorders. Current research suggests that orthodontic treatment and malocclusion do not trigger TM disorders or make them worse.2

Recommended Related to Oral Health

Repairing a Chipped or Broken Tooth

You're crunching ice or a piece of hard candy when you notice something hard in your mouth that doesn't melt or dissolve. You get a sick feeling as you realize what it is -- a piece of broken tooth. Although the enamel that covers your teeth is the hardest, most mineralized tissue in the body, its strength has limits. Falling, receiving a blow to the face, or biting down on something hard -- particularly if a tooth already has some decay -- can cause a tooth to chip or break. If you discover...

Read the Repairing a Chipped or Broken Tooth article > >

WebMD Medical Reference from Healthwise

Last Updated: May 04, 2010
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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How Do I Measure Up? Get the Facts Fast!

Number of Days Per Week I Floss

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Only 18.5% of Americans never floss. You are missing out on a simple way to make a big difference in the health of your mouth. Regardless of how well you brush, plaque still forms between your teeth and along your gums. Floss removes food trapped between the teeth and removes the film of bacteria that forms there before it turns to plaque, which can cause inflamed gums (gingivitis), cavities, and tooth loss. Try flossing just one tooth to get started.

You are one of 31% of Americans who don't floss daily. You are missing out on a simple way to make a big difference in the health of your mouth. Regardless of how well you brush, plaque still forms between your teeth and along your gums. Toothbrush bristles alone cannot clean effectively between these tight spaces. Flossing removes up to 80% of the film that hardens to plaque, which can cause inflamed gums (gingivitis), cavities, and tooth loss. Aim for 3 more days!

You are one of 31% of Americans who don't floss daily, but you're well on your way to making a positive impact on your teeth and gums. Regardless of how well you brush, plaque still forms between your teeth and along your gums. Toothbrush bristles alone cannot clean effectively between these tight spaces. Flossing removes up to 80% of the film that hardens to plaque, which can cause inflamed gums (gingivitis), cavities, and tooth loss. Aim for all 7 days!

Only 50.5% of Americans floss daily, and good for you that you are one of them! Regardless of how well you brush, plaque still forms between your teeth and along your gums. Toothbrush bristles alone cannot clean effectively between these tight spaces. Flossing removes up to 80% of the film that hardens to plaque, which can cause inflamed gums (gingivitis), cavities, and tooth loss. Congratulations on your good oral health habit!

SOURCES:

American Dental Association, Healthy People 2010

This tool is intended only for adults 18 and older.

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