Yes, gums can grow back. This process is called gum (or periodontal) regeneration. In some cases, the gum tissue may be able to regenerate without any assistance, however, depending on the severity of the gum recession, a regenerative procedure may be needed to help the gum tissue grow back.
Gum regeneration is most often done through a surgical procedure, during which a periodontist removes the gum tissue that has receded, then secures the gum tissue to the teeth by stitching it into place. This allows the gum tissue to reattach to the tooth and encourages new gum tissue to grow.
In addition to surgery, some dentists may also use a nonsurgical method called guided tissue regeneration. This approach utilizes a special membrane that is inserted between the receded gum tissue and the underlying bone. This membrane prevents the growth of gum tissue, allowing the bone to regenerate and allowing the gum tissue to grow back.
Regardless of the method used, gum regeneration can help improve the appearance of the teeth and gums and improve the overall health of the mouth. It is important to note, however, that the process may take several months to complete and, in some cases, may need to be repeated in order to achieve the desired results. Therefore, it is important to work closely with a periodontist to determine the best course of action for your specific situation.