Regard of the type of contact sport your child may be in it is important that they wear a mouth guard in order to protect their teeth from accidental damage. A mouth guard is a piece of molded plastic that protect the upper and row of teeth. If your child plays a sport such as football, hockey, baseball, etc, they are at risk of mouth injury. Wearing a mouth guard helps to reduce the risk of teeth getting chipped, cracked or even knocked out while playing.