Laser dentistry a branch of dentistry is the use of lasers to treat various dental conditions. When compared to drills and other non-laser tools, laser dentistry may provide a more comfortable treatment option for a variety of dental procedures involving hard or soft tissue. LASER is an acronym that stands for "light amplification by stimulated emission of radiation." The instrument produces light energy in the form of a very narrow and focused beam. When this laser light strikes tissue, it causes a reaction that allows it to remove or shape the tissue. Lasers can improve the efficiency, cost effectiveness, and comfort of dental treatments such as teeth whitening and contouring. Food and Drug Administration (FDA) has approved laser dentistry as a treatment option for a variety of dental conditions.