Permanent Teeth Behind Baby Teeth. If there is a lot of space between the two sets the adult teeth are far behind the baby teeth the baby teeth may not loosen and fall out on their own and may need to be extracted by the dentist. The best thing you can do is to encourage your child to wiggle the baby tooth with side to side motions and twisting.
If you notice an adult tooth behind your childs baby tooth dont panic. Most commonly it affects only one or two teeth usually the top or bottom incisors. This occurs when a permanent tooth that doesnt fully erupt forward or when there are two rows of teeth along the lower jaw or overcrowding.
Generally when permanent teeth begin to grow up usually when your child is between 5 to 7 years old the tooth pushes on and breaks the roots connecting the baby tooth to the gum line.
The permanent tooth then takes the place of the baby tooth. Permanent teeth have a rough edge to break out through the surface of the gums. This will help coax the tooth to fall out and allow the adult tooth space to move. The permanent tooth then takes the place of the baby tooth.