Don't shy away from x-rays

Your dentist takes x-rays of your teeth because they help in discovering and diagnosing any problems you may have. Many problems in the mouth can't be seen by your dentist. A digital image or an x-ray film will assist them.

The majority of dentists in Australia use film to take their x-rays, but the popularity of digital imaging is increasing. Digital systems offer some basic advantages, such as greatly reduced radiation exposure; faster processing; images that can be manipulated and stored on your dentist's computer; there are also environmental benefits because chemical film processing has been eliminated.

The need for an x-ray depends on such factors as how susceptible you are to decay; whether there are other problems in the mouth; whether the position of the teeth needs to be altered; and for planning restorative treatment.

From childhood to adolescence, generally about six x-rays are needed. Adults need x-rays at least every two years to check for decay and gum disease.

You should not be concerned about radiation from x-rays because your dentist follows very strict guidelines to ensure your safety.

There are three main types of x-rays: bitewing, periapical and panoramic. Bitewing shows the upper and lower teeth. Periapical shows the whole tooth including the root and surrounding tissues. Panoramic shows the teeth and jaws.

There are a number of situations where the use of x-rays may be necessary for correct diagnosis and proper treatment. They include:

Decay: An x-ray may be the best way of finding decay between teeth, or under old or leaking fillings or crowns.

Gum disease: An x-ray allows your dentist to assess the extent of damage to the bone caused by peridontal disease.

Wisdom teeth: An x-ray of a wisdom tooth allows your dentist to assess the area for possible sources of trouble in the removal procedure.

Root canal treatment: Problems associated with the nerves of teeth may be difficult to assess without x-rays.

Accidents: An x-ray by your dentist can determine the extent of damage caused by injuries to teeth and jaws.

Orthodontics: An x-ray by an orthodontist shows the position of the teeth before treatment; and helps determine where their proper position should be.