You may need to wear a mouth guard or a mouth splint at night. These devices prevent tooth movement by evening out the pressure in your mouth.
A mouth guard or splint also creates a physical barrier between your upper and lower teeth to protect them from further damage. They also help reduce any grinding noises that you make at night.
Mouth guards are similar in appearance to those used in sports such as boxing. They are usually made out of bendy rubber or plastic and can be made by your dentist to fit your mouth. You will usually have to pay for this type of custom-made dental appliance.
Mouth guards are also available to buy from your local pharmacist. However, it is unlikely to fit as well as one that is made by your dentist.
A mouth splint (also known as an occlusal splint or bite plate) is made from harder plastic and fits precisely over your upper or lower teeth. A splint will usually be more expensive than a mouth guard.
for more infomation about bruxism mouth guard