A child’s teeth are blackened and rotting away, indicating that the child has developed dental caries. Depending on the severity of the caries, the usual treatment options are fissure sealing, filling, or extraction. 1. If the tooth is only black on the surface and has no pits or holes, it belongs to shallow caries state, that is, minor cavities, and can be closed. 2. If there is a black hole on the tooth, it belongs to the state of medium or deep caries, then it is no longer necessary to do fossa sealing, and you can only choose to fill the tooth, and the dentist will, according to the situation, carry out the cleaning and filling of caries damaged areas. 3. If the caries is too serious, it is necessary to extract the caries and fill in the empty space, so as to leave enough space for the permanent teeth to grow. It is best to take your child to the dentist as soon as possible when caries first forms. The degree of decay in the teeth, whether to have the sockets closed or fillings, or to have the teeth extracted, all need to be judged by a professional dentist.