Photosensitizing agents for medical and/or dental applications, namely, pharmaceuticals for the treatment of infectious diseases in the oral cavity; light-activated disinfectant compositions for killing disease-causing micro-organisms in the oral cavity; light-activated therapeutic preparations for killing bacterial, fungal and viral infections in the oral cavity; photosensitizers for use in photodynamic therapy and/or photodisinfection; namely, pharmaceuticals for the treatment of infectious diseases in the oral cavity; light-activated disinfectant compositions for killing disease-causing micro-organisms in the oral cavity; light-activated therapeutic preparations for killing bacterial, fungal and viral infections in the oral cavity; pharmaceutical compounds for anti-microbial use; namely, pharmaceuticals for the treatment of infectious diseases in the oral cavity; light-activated disinfectant compositions for killing disease-causing micro-organisms in the oral cavity; light-activated therapeutic preparations for killing bacterial, fungal and viral infections in the oral cavity

Medical and dental equipment, namely, lasers, led, arc lamps, incandescent lights, fluorescent lights, gas discharge tubes, sterilizable light wands, intra-oral dental light system, sensory light therapy unit for use in field of photodynamic therapy and/or photodisinfection; a light delivery device for use in photodisinfection of oral cavity; dental equipment, namely, intra-oral dental light system, lasers, led, arc lamps, incandescent lights, fluorescent lights, gas discharge tubes, sterilizable light wands, fiber optic probe tips and syringes used in treatment of periodontal diseases; optic probe tips for use with laser and/or intra-oral dental light system, medical syringes and aerosol dispenser used in photodynamic therapy and/or photodisinfection