10 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