Many people worry about radiation when a dental film is requested. This article explains how safe it is and when a film is needed.
- Dental X-rays use a very low radiation dose with a lead apron.
- Dentists request films only when they are truly needed.
- How often depends on each person and has no single schedule.
- Bring old films to avoid repeat exposure.
X-rays allow the dentist to see what lies beneath the gums and inside the jawbone. Many people feel uneasy because they hear the word radiation. In fact, dental films use a very low dose, and a dentist requests them only when they are truly needed. Here is what you should know before your next visit.
How low is the radiation dose
A small dental film exposes only a very narrow area, and the exposure time is measured in fractions of a second. Modern machines use digital sensors, which lower the dose considerably compared with old film. Patients wear a lead apron that covers the chest and abdomen. The dose of a single dental film is much lower than many other imaging tests of the body, and the apron adds an extra layer of protection for the rest of you.
When the dentist requests a film
- To examine a toothache, suspected decay or an infection around the root tip.
- Before wisdom tooth removal, root canal treatment or an implant.
- To assess bone loss in gum disease.
- To check the result after treatment.
How often should films be taken
There is no fixed schedule for everyone. People at low risk of decay can have films less often, while people who get cavities often or have gum disease need closer follow up. The dentist decides based on your symptoms and history, and usually will not repeat a film if a recent one is still usable. Bring your old films to a new clinic to avoid repeated exposure.
Women who are pregnant or think they might be should tell the dentist first so that it can be considered carefully. You can read more in our articles on what a bitewing X-ray is and what a panoramic film shows. You can walk in during working hours or call the hotline 028.3868.1097.
Frequently asked questions
Are dental X-rays harmful?
The dose is very low and a lead apron is used. Dentists request films only when truly needed.
How often should dental films be taken?
It depends on the person. The dentist decides from symptoms and history, and there is no single schedule.
Should I bring my old films to a visit?
Yes, so the dentist can compare them and avoid unnecessary repeat films.