X-ray apparatus for medical and dental use; X-ray detecting apparatus for medical and dental use, namely digital CCD sensor; digital X-ray image signal receiving and producing apparatus for medical and dental use, namely image-signal providing device on personal computers; main body holder also used as electric power source for aforesaid digital X-ray image-signal receiving and producing apparatus; parts for the aforesaid goods, namely interface cables, sensor hangers, hanger covers and dispo...