ABSTRACT LASERs have been used in the field of dentistry for more than 40 years. Their wide range of application and reduced pain perception and bloodless procedure makes them readily acceptable for clinical practice. They have multiple advantages such as reduction in treatment duration, increase patient’s level of acceptance that helps orthodontists to improve on their treatment efficiency, improve smile esthetics by reducing patient discomfort. Pertaining to orthodontics, LASER application includes pain reduction, alternate to routine etching and bonding techniques, accelerating tooth movement, debonding of brackets, numbering of brackets, increase implant stability a, bracket mesh designing, reduction in rate of demineralization and soft tissue procedures namely, frenectomy, gingivectomy, exposure of impacted teeth, operculectomy, papilla flattening, etc. Like any other technique, LASERs have their own disadvantages. This review article is about the use of LASER in orthodontics, their effects on different tissue, mechanism by which it is formed and various types of commercially available LASERs and their uses clinically.