Dental implants; Dental x-ray apparatus; Dental apparatus and instruments; Dental apparatus for paralleling; Dental apparatus for milling; Dental apparatus, electric; Dental articulators; Dental bridges; Dental cleaning apparatus utilizing ultrasonic vibrations; Dental cleaning apparatus, other than for personal use; Dental descaling apparatus utilizing sonic vibrations; Dental hand pieces; Dental chairs; Dental crowns; Dental implant apparatus; Interdental stimulators for use in dental treatment; Instruments for use in the preparation of dental protheses; Inspection instruments for medical or dental use; Implants (prosthesis) for dental surgery; Implant materials (prosthesis) for use in dental surgery; X-ray film imaging apparatus for dental use; X-ray film viewers for dental use; Chairs especially made for dental use; Ultrasonic diagnostic instruments for dental use; Ultrasonic diagnostic apparatus for dental use; Apparatus for fabricating dental prostheses (specifically adapted for dental use); Apparatus for dental use; Apparatus for displaying dental images; Electrically operated dental apparatus; Dental tools; Apparatus for use in dental laboratories; Dental instruments