Abstract: Although implant denture is used widely in restoration treatment of the missing teeth, peri-implantitis, which is characterized as an inflammatory reaction that affects the hard and soft tissues, has been the main cause to the loss of implants. With the development of mini-invasive medical treatment, peri-implantitis management has developed towards non-surgical therapy. Laser has the advantages of mini-invasion and strong sterilization effects, which makes it used widely on periodontitis, so more and more research and clinical techniques have been taken in peri-implantitis to explore its effects on peri-implantitis and to apply it into clinical practice . In this paper, there will be an overview about the application and research progress of laser on peri-implantitis.

Key words: laser, dental implant, peri-implantitis, Er:YAG laser, Diode laser, CO? laser