https://thegumdr.com/dental-services/pinhole-surgical-technique/

This new, minimally invasive technique is used to treat gum recession. Gum recession refers to the loss of gum tissue along the gum line. Gum recession can occur as a result of periodontal disease (gingivitis, periodontitis, or advanced periodontitis). This technique works best with existing good gum tissue. There are no skin grafts needed with this technique. It simply involves the adjustment of the existing tissue.