Imagine what it would be like if you suddenly lost one or two of your front teeth. Smiling, talking, eating—everything would suddenly be affected. Knowing how to prevent injuries to your mouth and face is especially important if you participate in organized sports or other recreational activities. Mouthguards, also called mouth protectors, help cushion a blow to the face, minimizing the risk of broken teeth and injuries to your lips, tongue, face or jaw. They typically cover the upper teeth and are a great way to protect the soft tissues of your tongue, lips and cheek lining.