This book is about LASER, its indications in dentistry the advantages and disadvantages of LASER. Laser offers advantages such as bloodless operative field and postoperative course, no requirement of suturing minimal to total absence of postoperative pain, and high patient acceptance these combine to make lasers a highly advantageous alternative to conventional treatment modalities such as scalpel or electrosurgery. Thus, all these advantages emphasis to use Laser in dentistry.