It is very common for people to clench or grind their teeth in their sleep. Unfortunately with this repeated excessive wear, our jaw joint and natural bite start to get damaged. In addition to jaw pain, waking up with headaches is another common symptom. If left unchecked, clenching and grinding can lead to so much tooth damage that restorations and crowns are needed to restore natural tooth function. Night guards are custom made to prevent the wear of your teeth, and save your TMJ (temporal mandibular joint) from damage.
Another type of mouth guard is specifically for sports. Many sports require players to wear sports guards to prevent tooth loss and damage as well as avoid or lessen concussions.