Occasional teeth grinding, medically called bruxism, does not usually cause harm, but when teeth grinding occurs on a regular basis the teeth can be damaged and other oral health complications can arise.
Because grinding often occurs during sleep, most people are unaware that they grind their teeth.
However, a dull, constant headache or sore jaw when you wake up is a telltale symptom of bruxism.
Many times people learn that they grind their teeth by their loved one who hears the grinding at night.
► See also: BRUXISM : Stopping Teeth Grinding or Bruxism