It is common for children to hit in the mouth when they are playing or sports. A dental injury can be to child knocking out a tooth completely, tooth loose, that a piece of the tooth is broken or that the tooth has been given a crack. Treatment depends partly on the extent of damage, and secondly on whether the tooth is permanent or a milk tooth.
If the child knocks out a permanent tooth to remove it completely you should contact a dentist or Cosmetic Dentist. The sooner the tooth is back in place, the greater the chances that it will heal well.
Most damage to the teeth heal without complications, but there is a risk that the new teeth waiting in the jaw [...]