Your dentist may need to take X-ray films of your teeth and jaws, sometimes on a regular basis. There are varied reasons for taking a radiograph (X ray film). They are:

1. To assess teeth for decay and to better examine the roots of teeth prior to carrying out fillings, crown and bridgework or root canal treatment.

2. To assess growth and jaw forms for orthodontic (braces) treatment or for jaw surgery to correct deformities.

3. To look for jaw cysts, tumours and fractures or to monitor their progress.

4. To examine the jawbones and joints prior to dental treatment.

In general, there are two main types of films: intraoral (inside the mouth) and extraoral. Intraoral films are generally smaller and are used primarily for visualising teeth. Extraoral films require a slightly higher radiation dose and are larger but accommodate the jaws in the image.

For taking radiographs, you may be required to wear a lead apron to minimise radiation exposure to the rest of the body. A special precaution is to avoid taking radiographs during pregnancy unless absolutely necessary. However, doses are low because the short exposure time required for these films.

The dental centre has comprehensive and new facilities for dental radiography. It also has well trained radiographers to provide efficient and safe care when such X ray films are required by your dentist.

Contributed by Dr Winston Tan

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