Light has always fascinated mankind for many centuries. There have been innumerable references to light being a source of healing and curing many diseases for ancient cultures. The use of light for photodynamic therapy enabled early civilizations to treat a variety of dermatologic conditions using photosynthesizer chemicals found in plants. At present, laser technology has become associated within indispensable and diverse applications such as metrology, science and engineering, medicine, communications, art and entertainment, research work, defence, and astronomy. This book deals with the outcome of laser therapy, focusing on postoperative wound healing of periodontal and peri-implant tissues following treatment, based on scientific evidence from currently available in vitro, in vivo and clinical studies, as well as case reports.