Permanent Tooth Growing Over Baby Tooth. 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 result is crowded teeth andor malocclusion a bad bite.
Over-retained baby teeth serve as a food and debris trap that may result in the decay not only of the tooth itself but of the nearby teeth as well. Parents can also aid children with wiggling out mobile primary teeth. In this case the adult tooth perhaps the baby tooth is not in the correct alignment to such an extent as to not be beneath the baby tooth.
If the permanent tooth does not grow in directly underneath the baby tooth the root of the baby tooth will remain intact and not get pushed out as it usually would.
Sometimes an adult tooth will form and grow behind a baby tooth. Teeth begin coming in around 6 to 10 months old. Permanent teeth growing in before baby teeth is out is a common dental issue faced by many parents. One of the permanent teeth actually caused an absess when it couldnt push the baby tooth out so now we dont wait that long as soon as he has a permanent tooth trying to get out we have the baby tooth removed.