lasers for medical and dental use, water cooling assembly apparatus for use with the aforesaid goods, lasers and other electromagnetic energy cutters utilizing fluids for cutting and/or ablating medical and dental materials and components therefore, dental instruments, namely, root canal shapers, drills, files, handpieces, reamers, and components therefor for dental use, irrigation and washing devices for endodontic use, endodontic storage and sterilization instruments, and surgical implants, namely, biomaterials comprised of natural and synthetic compounds that are compatible with living tissue for dental use