[Surgical techniques of peri-implant soft tissue recession].

Peri-implant soft tissue recession may cause biological and aesthetic complications. Establishing and maintaining sufficient soft tissue around the implant is the basis for achieving long-term stability of implant restoration. This article reviews the research progress on the common causes, surgical treatment indications and techniques of peri-implant soft tissue recession. Available studies indicate that the subepithelial connective tissue graft can result in predictable outcomes when the peri-implant soft tissue recession is sallow.