Root resorption is an irreversible reaction that cannot be recovered. If there is a lot of root resorption, which has reached 1/3 of the root, the tooth may be loose enough to temporarily relieve the symptoms of tooth loosening by fixing the tooth, by connecting it to other teeth, or by fixing it with a fiber band. Root resorption usually occurs when there is early biting pain or trauma to the tooth that can cause resorption of the tooth root. When root resorption occurs, it is important to go to the dental clinic as soon as possible to stop the reabsorption of the tooth root, to perform perfect root canal treatment on the tooth, and to use medication to make the inflammation around the tooth disappear to prevent the appearance of reabsorption.