Abstract: A universal intraoral radiographic system for taking periapical as well as bite-wing radiographs comprises a bite block, a bite block holder and an x-ray beam alignment means. The bite block includes a bite portion having a substantially vertically extending film-holding slot permitting the film to extend therethrough into any desired position. A film-locking slot extends substantially horizontally through the bite portion so as to receive the bite block holder which locks the film in place within the film-holding slot. The x-ray beam alignment means or target comprises a substantially planar piece of radio transparent material which may have circular indicia for aligning an x-ray beam of circular cross-section or rectangular indicia for aligning an x-ray beam of rectangular cross-section. The system may also be used to practice the occlusal technique by utilizing an occlusal film holder having a coupling portion adapted to be received by the film-holding slot.