Stock mouthguards are hard to keep in place and uncomfortable, which can make it difficult to sleep. While boil-and-bite mouthguards offer a better fit, they become brittle and weak with frequent use.

3. Stock mouthguards are preformed and "ready-to-wear." They are the least expensive and widely available in sporting goods stores.

Using mouth guards during sports or athletic activity can help prevent dental damage. They can also be worn at night to prevent teeth grinding.

Stock mouthguards are pre-formed and ready to wear, and they can be found for as low as two dollars at most sporting goods stores. Boil and bite mouthguards can also be purchased over-the-counter.

According to Hewlett, there are three categories of mouthguards. “The first is what we call the stock mouthguard — that is the one or two sizes fit-all type.

There are four different types of mouthguards that you can choose from to protect both children and adult teeth in sport: Stock mouthguards — These mouthguards can be worn without any ...

Stock mouthguards can be bought for as little as $1.50 each in a drugstore, he noted. Mouthguards: Custom-fitted mouthguard (left); "boil-and-bite" mouthguard (center); inexpensive "stock" mouthguard ...

Stock mouthguards: o Feel bulky and interfere with breathing and/or speech. o Must be held in place by biting down on it.