Grinding teeth at night, also known as bruxism, can be a frustrating and even painful experience. Fortunately, there are several techniques you can try to how to stop grinding teeth at night. One of the most effective methods is to wear a mouthguard or splint while sleeping. These custom-fitted devices help to protect your teeth from grinding against each other and alleviate the pressure on your jaw. Additionally, stress and anxiety are often contributing factors to teeth grinding, so finding ways to relax and manage stress can be beneficial.