Dental instruments for use in oral and joint therapeutic treatment of skin, nerve and muscle tissues; dental instruments, namely, oral irrigators, dental devices for root canal procedures in the nature of root canal therapy instruments used to shave the inside of a root canal and dental root files used in root canal dental procedures, dental handpieces, electromagnetic energy emitting devices for dental and medical use in the nature of lasers for dental and medical use and structural component parts therefor; electronic aesthetic skin treatment devices using light emitting diodes, namely, infrared, red, orange, yellow, green, and blue wavelengths for generating light rays; electronic light therapy apparatus for the skin; electronic stimulator for oral and joint treatment of skin, nerve and muscle tissues; lasers for medical purposes; lasers for medical use; lasers for surgical and medical use; lasers for the cosmetic treatment of the face and skin; light emitting devices, namely, lamps and LED devices for treatment of a variety of skin conditions; light emitting diode (LED) apparatus for lighting, incorporated into medical instruments; medical and surgical laparoscopes; medical apparatus and instruments for use in surgery