Lasers have been used in dentistry since 1963 for a variety of indications from tooth decay, gum disease, biopsy or lesion removal to teeth whitening. The lasers deliver energy in the form of light.There is wide and continuous expansion of application of laser in dentistry. Laser can be a precise, effective and smarter way to perform many dental proce-dures. Hence, it is essential for the dental practitioner and academicians to know the laser fundamentals with types, safety and applications of lasers. Keeping this in mind, the book has been written to cater to the needs of den-tal professionals.