Bruxism  is a condition in which you grind, gnash or clench your teeth. If you have bruxism, you may unconsciously clench your teeth when you're awake (awake bruxism) or clench or grind them during sleep (sleep bruxism).

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Symptoms

• Teeth grinding or clenching, which may be loud enough to wake up your sleep partner

• Teeth that are flattened, fractured, chipped or loose

• Worn tooth enamel, exposing deeper layers of your tooth

• Increased tooth pain or sensitivity

• Tired or tight jaw muscles, or a locked jaw that won't open or close completely

• Jaw, neck or face pain or soreness

• Pain that feels like an earache, though it's actually not a problem with your ear

• Dull headache starting in the temples

• Damage from chewing on the inside of your cheek

• Sleep disruption