The term LASER is an acronym for ‘Light Amplification by the Stimulated Emission of Radiation’. As its first application in dentistry by Miaman, in 1960, the laser has seen various hard and soft tissue applications. Laser technology has been recently introduced into the dental field with the idea to replace drilling. Having a less painful first dental experience by the use of modern instruments like laser can be an efficient preventive and therapeutic measure in dentistry. It can be effectively used for caries detection and removal, vital pulp therapy, reducing the risk of infection, inflammation and to achieve hemostasis. On the other hand, due to minimal invasion, laser treatment is well accepted by children and anxious patients. This review of literature aimed to provide details of the available types of lasers and their applications in dentistry.