Do you frequently wake up and your jaw feels tender and sore? Or do you often have headaches when you wake up in the morning? If so, you may be experiencing complications from a common condition known as bruxism. Bruxism is a condition in which you clench and grind your teeth. The majority of patients who suffer from bruxism are unaware of it, as it is typically done during sleep. It is not uncommon for patients to be made aware of their problem at their routine hygiene examination appointment. Your teeth and mouth will show obvious signs that you clench and grind your teeth.