Dental instruments for use in oral, joint, skin, nerve and muscle therapies and treatments, namely, oral irrigators, handpieces, dental devices used in 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; electromagnetic energy emitting devices for dental and medical use in the nature of lasers for dental and medical use, and parts therefor; components of and accessories for lasers for dental and medical use, namely, handpieces, fibers, and laser tips; 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; 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