What reason does deciduous tooth have permanent tooth below

summary

The deciduous teeth of children aged 6-12 gradually fall off, while the permanent teeth gradually emerge. Therefore, there are both deciduous teeth and permanent teeth in this period. Some parents can't correctly distinguish between permanent teeth and deciduous teeth, and often mistakenly think that the children's teeth are not in the right position and ask for extraction. In fact, permanent teeth should be retained as much as possible, because they cannot be regenerated after extraction. So what's the reason there are no permanent teeth under the deciduous teeth? We can generally distinguish by its shape, color, child's age, the degree of wear on the occlusal surface of teeth, etc.

What reason does deciduous tooth have permanent tooth below

First, the tooth germ with congenital lack of permanent teeth will naturally stay on the gums for a long time because there is no permanent tooth development and the root of deciduous teeth can not be compressed and stimulated, and there is no absorption phenomenon. Sometimes this kind of residual deciduous teeth has not fallen off in adulthood and still has a certain masticatory function.

Second, deciduous tooth disease is caused by the infection around the root of deciduous tooth, which leads to the necrosis of permanent tooth germ; or the injury of permanent tooth germ due to the trauma of deciduous tooth.

Third: the root of deciduous teeth and alveolar bone adhesion, due to inflammation caused by the root of deciduous teeth and alveolar bone adhesion, so that the root of deciduous teeth absorption is not complete or no absorption, resulting in deciduous teeth can not fall off.

matters needing attention

Some teeth may not be able to be clearly separated. If it comes to tooth extraction, it must be finally determined by the doctor. Once the permanent teeth are extracted, they can no longer grow, and it will be too late to regret.