Clenching or grinding your teeth occasionally is normal and usually not harmful, but if done regularly, it can damage your teeth and cause other oral health problems. Teeth grinding can have different causes, but it is usually triggered by stress, medical conditions, or crooked or missing teeth.

Squeaking typically occurs during sleep, so it can be difficult for people to tell if they have bruxism. Signs include a sore jaw or constant headache, and a partner may sometimes hear the grinding. Your dentist may also look for symptoms such as changes or abnormalities in your teeth as well as jaw sensitivity.

“Whether you prefer a big sweat session or a stroll, exercise helps relieve stress, a common cause of bruxism.”

Severe bruxism can cause teeth to loosen or break and wear teeth so badly that crowns, implants, root canals, bridges or dentures may be needed. It can also damage your jaw, cause hearing loss, and change the shape of your face.

Source: www.sleep.org