What are the consequences of teeth grinding?

Many. Grinding your teeth can result in headaches, earaches, damage to your teeth and enamel causing erosion of the teeth and sensitivity, increased risk of cavities, and loose teeth. If you grind your teeth, see your dentist to get fitted for a mouth guard.
Pain/Dental distress. Teeth grinding may cause you to have pain in the jaw and TMJ area as well as wear away your teeth. Dental pain can result as well as the need to have expensive repair to your teeth (crowns, inlays, root canals, cavities, ) get seen by your dentist or orthodontist and get a good evaluation and help. You may need treatment for any underlying anxiety problem or other.