Clenching, or grinding of your teeth (also known as bruxing) are common habits. Biting forces are normally small, gentle, fleeting and very frequent throughout the day. In fact, it's the normal stimulus necessary to keep your teeth and jawbone healthy. When you clench or grind your teeth you apply forces up to ten times normal (in the 200 lb range). And it's not just the force, it's the duration and frequency with which they're applied. High forces lasting for seconds or minutes, frequently exerted, can affect some or all of the masticatory system. This includes the teeth, jaws, jaw joints and muscles, causing aching jaws, headaches, earaches, neck and even backaches; and the teeth themselves causing excessive wear, fractures, or even loose teeth.
Why does grinding occur? Habitual grinding is most frequently a reaction to stress. Sometimes abnormalities in your bite or malocclusion (“mal” – bad; “occlusion” – bite) can trigger clenching or grinding. It is normal for children to sometimes grind their teeth when new teeth are coming in, but it may be indications of stress too. You may be grinding your teeth subconsciously in your sleep, but it may be so loud as to awaken your sleeping partner. Or our office may be the first to suspect it during a dental exam because of the apparent signs of change to muscles, joints and teeth especially abnormal tooth wear.
What can be done about teeth grinding or bruxing? If you are symptomatic, having pain, muscle, joint or tooth soreness, the first step is to get you comfortable. Generally, a mild non-steroidal anti-inflammatory medication (aspirin, ibuprofen) and muscle relaxants will help in addition to moist heat and mild jaw exercises. Stress management is also helpful. To prevent further damage, we may recommend a bite guard made of wear-resistant plastic that fits over the biting surfaces of your upper teeth. These customized unobtrusive appliances when properly fitted and adjusted stop clenching and grinding activity, or at least the damage they can do. A bite guard can be worn day or night especially during stressful periods.