Childs Permanent Teeth Growing Behind Baby Teeth. 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. In general baby teeth will start to fall out between the ages of 5 and 7 and permanent teeth will start to come through.
The nickname comes from the fact that sharks also have a double row of teeth. Shark teeth is a term used to describe the situation when a childs permanent teeth start to grow in before she loses her baby teeth. However Shark Teeth occur when the new adult teeth come in behind the baby teeth and dont dissolve the baby roots.
The root dissolves causing the tooth to become loose and fall out making room for the new tooth.
This area is known as the dental arches. Children have 20 baby teeth compared and 32 permanent teeth including wisdom tooth. The lower front teeth are the first to become loose and eventually fall off. In general baby teeth will start to fall out between the ages of 5 and 7 and permanent teeth will start to come through.