1. DR:TAGWA MIERGHANI MOHAMED

2.  There are variety between intra and extra oral machine design.  The radiographer must have clear understanding of the operating procedures for the specific equipment that use in dental office to avoid improper exposure of patients and dental personnel.

3.  Intra oral ( film placed inside the mouth )  Extra oral ( film placed out side the mouth )

5.  The typical intraoral dental x-ray machine features three component parts. 1- tube head : that produces dental x-ray. 2- extension arm : suspended the tube head the electrical wires and allows the movement.

8. 3- control panel : allows the dental radiographer to regulate the x-ray beam,the control panel is plugged into electrical outlet.that may be mounted to the floor or wall support. Or remote wall location outside the dental operatory.

10.  On-off switch  Exposure button  Control devices to regulate the x- ray beam and kilovaltage and also contain timer.

12.  A device use for hold the intraoral film in the mouth.  Film holders eliminate the need for patient to stabilize the film.  Its required for paralleling technique.

15.  Bite block  Snap –a-ray  Endo ray  Precision film holder  Rinn