Laser is an acronym for “light amplification by stimulated emission of radiation.”Laser procedures offer high quality, state-of-the-art dentistry because of new treatment modalities and enhancements to traditional treatments, with reduced need of anesthesia during treatment and a great reduction or lack of post-treatment pain.Today’s dental lasers are smaller, lightweight, highly portable and more reasonably priced.The future of dental lasers is bright. Some of the newest, still ongoing research deals with the use of dental lasers for guided tissue regeneration, connective tissue attachment and tissue welding. It is not inconceivable that dental lasers of the future will be used to make incisions, reflect flaps, perform osseous surgery and then weld the flaps into position. In this book, we have discussed the mechanism by which the lasers work, types and their use in dentistry in general with special focus on periodontology and implantology, lasers safety and future of lasers in dentistry. The book is written with the prime intention for those who want to acquire basic and sound knowledge of lasers and their applications in the field of dentistry.