photodynamic therapy: Definition, Uses, and Clinical Overview
photodynamic therapy is a light-activated treatment that uses a dye-like compound and a specific light to create a short-lived antimicrobial or tissue-targeting effect. In dentistry, it is most commonly used as an add-on (adjunct) to reduce microbes in areas that are hard to clean mechanically. It is used in settings such as gum (periodontal) care, around implants, and sometimes inside root canals. Outside dentistry, it is also used in some medical fields to target certain skin conditions and abnormal tissues.