Night guard is also known as occlusal splint which is generally advised for patients who are habitual bruxers or heavy grinders or clenchers. These patients are at high risk of loosing their enamel leading to loss in vertical height of the tooth or sometimes even fracture of tooth. These patients are usually unaware of them being bruxers as most of this activity happens when he/ she sleeps. Night guards are custom made trays for either upper or lower dental arch and has to be worn at night for 5-6 nights a week. When the night guard is worn it prevents the upper and lower teeth from touching each other and thus prevents the damage.