Because clenching and grinding (Bruxism) of the teeth most often occurs during sleep, most people are unaware that they are doing it.
A dull, constant headache or sore jaws are telltale symptoms of clenching or grinding.
Stress and anxiety often cause grinding. Other causes are an abnormal bite, missing teeth and maligned teeth.
If you are suffering with headaches and/or sore jaw, treatment is available.