One of the three major causes of tooth wear is attrition. Attrition is caused by tooth to tooth contact. The back teeth become flatter while the front teeth become shorter. In a healthy well-balanced bite the rate of attrition is minimal throughout life. When that rate is dramatically increased, wear will appear on some or all of the teeth. (See my website at www.lajolladental.com)
One of the conditions that accelerate the attrition or wear is bruxism. Bruxism is an involuntary clenching-grinding of the teeth. It is believed to be caused by stress, anxiety, and an imbalance in the biting position of the upper and lower jaws – malocclusion. Bruxism can occur subconsciously during the day or while sleeping.
Moderate to severe attrition of the front teeth can leave a patient with short and unpleasant looking teeth and an aged smile. It is possible to have attrition accompanied by acid erosion and/or abrasion.