Doctors don't completely understand what causes bruxism. Possible physical or psychological causes may include:

  • Emotions, such as anxiety, stress, anger, frustration or tension
  • Aggressive, competitive or hyperactive personality type
  • Abnormal alignment of upper and lower teeth (malocclusion)
  • Other sleep problems, such as sleep apnea
  • Response to pain from an earache or teething (in children)
  • Stomach acid reflux into the esophagus
  • An uncommon side effect of some psychiatric medications, such as phenothiazines or certain antidepressants
  • A coping strategy or focusing habit
  • Complication resulting from a disorder such as Huntington's disease or Parkinson's disease
July 22, 2014