We often get asked about why we take x-rays or encounter people worried due to the risk of radiation. X-rays are a necessary part of good patient care. Since clinically, we can only see about one-third of the actual tooth, x-rays provide valuable information that we cannot visualize otherwise. Information that allows early detection of dental problems and can save the patient time, money and pain.

How often do I need X-rays?

The frequency of getting x-rays of your teeth often depends on the person. Your medical and dental history as well as your current health are all factors. Some people may need x-rays as often as every six months; others with no recent dental or gum disease and who visit their dentist regularly may get them only every couple of years. If you are a new patient, we like to take a set of new x-rays as part of the initial exam to establish a baseline record from which to compare changes that may occur over time, or if we need to address any concerns that are not visible to the naked eye.

Are X-rays harmful?

There is radiation emitted when dental are taken, so knowing if x-rays are harmful to you is important. When I go to the dentist, the last thing I’m worried about is radiation.  I’m keeping my fingers crossed that I have no cavities and hope they forget to ask me if I floss daily.  However, we want to put your mind at ease because the amount that is emitted is very minute. A dental X-ray gives off less radiation than the amount which you are exposed to from the earth’s atmosphere in one day. This is known as background radiation. All of us, for all of time, have been exposed to background radiation produced constantly by the natural environment. Taking a plane flight exposes you to the radiation of about 5 dental x-rays, still very minute. The radiation exposure of a chest x-ray is equivalent to 40 dental x-rays and a mammogram is equivalent to 500 dental x-rays. That’s probably more than you will have taken in your lifetime. With the advent of digital x-rays, the exposure is even less. Studies have shown that radiation from dental x-rays is so small that it is impossible to isolate it as a variable in terms of the harm that it may cause. In other words, it is negligible. The risk versus benefit ratio is highly in favor of the use of dental x-rays.

What is the policy for the taking of x-rays during pregnancy? Current research has approved the use of x-rays while pregnant. However, out of an abundance of caution, we definitely recommend them only if the patient is having a problem. If there is a problem that requires x-rays, we use 2 lead shield aprons. However, it’s very important to keep up your routine dental check-ups and cleanings.  Hormonal changes and the transfer of calcium from mother to fetus can have serious effects on the support structures of teeth, namely gum and bone. Google: “Dental Visits and Pregnancy” to learn more.

We hope this information helps to understand the importance and safety of dental x-rays as a powerful diagnostic and preventative tool.  You can always talk to your physician or message us with any other questions or concerns!