Intraoral Radiograph

Dental practitioners should stay informed of new developments in equipment, materials and techniques to ensure high quality radiograph. A good quality radiograph exhibits maximum detail. It will show the teeth and anatomic structures with minimum distortion and with optimal density and contrast.

Successful way of taking an intraoral radiograph has three factors. These are: proper positioning, appropriate exposure and correct processing.

The film must be properly positioned to ensure proper geometry and prevent distortion and overlap.

The exposure technique factors must be appropriate for the patient and the film selected.

Processing time, temperature and handling requirements must be followed to produce a quality radiograph.

Geometric distortion can be minimized by using a long X-ray source to object distance while maintaining the shortest distance between the film and object. This can be obtained using a long cone (16 inches) technique. It is also recommended to always use a film holding and position-indicating device (PID).

In vertical angulation, distortion when the vertical angle is large, can be avoided by simply placing the film deeper into the center of the mouth, so that tipping is not necessary.

In order to maximize the amount of contact opening in proximal area of the teeth, the beam should be directed at right angles to the contact area. Contact areas should always be visualized prior to taking bitewing radiographs.

Film selection is important to both radiographic success and to provide the lowest practical exposure to the patient. To achieve consistent quality radiographs, a consistent quality film must be used.

Even with the excellent automatic processors available today, many errors can occur during processing. Many of these errors revolve around improper film handling, but some can be due to the processor itself. Manufacturer’s recommendations for development time and temperature should be closely followed. Proper attention to chemical dilution, mixing and loading must also be followed.

    • kamwasir ruth
    • Mar 17th. 2011 11:58am

    The information given is very good, unfortunately many of the machines being explained are of the latest modules. in practice old modules are the ones in use because of the relatively high costs of the modified forms

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