Medical machines and apparatus, and structural parts and fittings thereof; medical X-ray photography apparatus; dental X-ray photography apparatus; otorhinolaryngology X-ray photography apparatus; plastic surgery X-ray photography apparatus; ophthalmology X-ray photography apparatus; X-ray apparatus for medical and dental imaging; X-ray apparatus for medical and dental use; X-ray diagnostic apparatus for medical and dental use; X-ray computed tomography [CT] scanners for medical and dental use, and structural parts thereof; digital radiography apparatus for medical and dental use, namely, computed tomography equipment for medical and dental use, and structural parts thereof; X-ray generators for medical purposes, support members as a part of medical apparatus, base plates as a part of medical apparatus, rotation arms as a part of medical apparatus, X-ray image detectors for medical purposes, X-ray irradiation controllers for medical purposes, supporting devices for patient positioning, patient's chin positioners, spacing mouthpieces to be disposed between patient's upper and lower incisors, and electrical control panels for medical use as a part of medical apparatus; X-ray image processing apparatus for medical and dental use.;