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, and dental handpieces; 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 the cosmetic...