Bruxism is a common problem affecting at least 10% of the population. Teeth grinding can happen during the day or night and could prove challenging to stop because it often occurs unconsciously. The side effects of bruxism can be painful, such as jaw soreness and joint pain, worn enamel, cracked teeth, tension headaches, earaches, facial pain, and fatigue. Although researchers and dental experts are unsure, stress appears to be the primary cause of bruxism. Other factors contributing to teeth grinding include smoking, genetic predisposition, alcohol, certain medications, and sleep disorders like sleep apnea. Fortunately, most bruxers find relief from wearing mouth guards.