DR:TAGWA MIERGHANI MOHAMED. There are variety between intra and extra oral machine design. The radiographer must have clear understanding of the operating.

DENTAL X-RAY EQUIPMENT

DR:TAGWA MIERGHANI MOHAMED

introduction

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 .

Types of machines

Intra oral ( film placed inside the mouth )

Extra oral ( film placed out side the mouth )

Component parts

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 .

Tube head

Extension arm

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 .

The control panel consist of :

On-off switch Exposure button Control devices to regulate

the x-ray beam and kilovaltage and also contain timer .

Control panel

Film holder

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 .

Types of film holders

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

Bite -bolck

Snap –a-ray

Endoray

precision