Mouthguards protect your teeth from injury. Anyone who plays contact sports, such as football, boxing, soccer, ice hockey, basketball, lacrosse or field hockey should wear a mouthguard. Bruxism, a fancy word for grinding your teeth, is a common habit for many people while they sleep. Wearing a custom mouthguard at night can prevent enamel wear and tooth damage. A custom-fitted mouthguard is designed and made in a dental laboratory. From an impression of your teeth, the technician molds a custom mouthguard using a durable acrylic material. While custom-made mouthguards are more of an investment than other types, they provide the most comfort and best protection.