Photodynamic Therapy

Photodynamic therapy (PDT) has emerged as a novel noninvasive photochemical disinfection therapeutic approach to treat cancer infections and diseases IN MEDICAL and dental fields. It includes the use of a low-power diode laser in combination with photosensitizing compounds. The photosensitizer binds to the target cells and when it is irradiated with light of specific wavelength in the presence of oxygen it undergoes a transition from a low-energy ground state to an excited singlet state; then singlet oxygen and other very reactive agents are produced which are toxic to these target cells Antimicrobial PDT (aPDT) seems to be a emerging unique and interesting therapeutic approach and holds promise as a substitute for currently available chemotherapy in the treatment of periodontal and peri-implant diseases.