All the parents know that the constant teeth will replace the primary teeth of their children. However, very often the constant teeth start growing before the loss of the primary ones. The teeth start growing in two rows and it forms the abnormal bite. The so-called shark teeth kids can be seen here and there. Why does it happen so?
Normally, the germs of the constant teeth perform a pressing action upon the roots of the primary teeth. Their roots start dissolving under this pressure and become movable. Finally, they fall out themselves or the doctor removes them easily. But sometimes it happens so that they are located in the parallel planes. In this case, during the dentition of the constant tooth the pressure it occurs on the root of the primary tooth is not enough. In such cases, it grows near or above the primary one.