Does your jaw feel stiff or do you have difficulty opening your mouth wide? Are your teeth sensitive to cold drinks? Do your jaw muscles feel tired in the morning?
You may be grinding your teeth at night - a medical condition called bruxism - or you may be clenching your teeth, which can be just as harmful. People with nighttime grinding habits may wear away their tooth enamel ten times faster than those without abusive chewing habits. Eventually your teeth may be worn down and destroyed.