The safety of dental x-rays is a common concern of patients. The American and Canadian dental associations have guidelines for dental professionals to follow to make them as safe as possible. There is a general principle in radiation safety called ALARA – as low as reasonably achievable. Dental professionals use the lowest possible dose and to limit exposure whenever possible to be able to treat patients safely and efficiently. Digital x-rays in most offices use up to 80% less radiation than traditional film x-rays.
How much radiation do I get from dental x-rays?
A typical digital dental x-ray emits a dose of 8 or 9 micro-Sieverts. Your dentist may prescribe a panoramic x-ray, which spins around your head and shows the entire jaw and surrounding areas, this type of x-ray emits about 24 micro-Sieverts. This is a similar amount to what you would get by spending a day outside on a sunny day or taking a short plane ride.
How often do I need x-rays?
The frequency of x-rays is determined by your dentist, based on your risk level. People with a high decay risk or lesions that are being monitored may have radiographs taken more often. Those with minimal history of cavities may require x-rays less often. Other specific radiographs may be needed at varying frequencies based on an individual patient need. Based on additional clinical findings and past dental and medical history, your dentist will assess how often you require x-rays.
I’m pregnant, is it safe to have x-rays?
Pregnant women are generally advised to avoid dental x-rays. Though the radiation is minimal, it’s best to avoid all exposure when possible for the health of the developing fetus. For this reason, it’s important to tell your dentist if you are or may be pregnant.
What if I refuse x-rays?
X-rays are a very important tool for your dental professional. Radiographs are essential for completing an accurate assessment. They show what cannot be seen with the naked eye, such as, cavities in between the teeth or under fillings, bone loss under the gums and possible signs of oral cancer. Without baseline and routine sets of x-rays, it is difficult to diagnose any issues or measure the progression of diseases accurately. Many conditions would likely only be diagnosed through x-rays.
If you are concerned with the frequency of radiographs, have an open and honest conversation with your dentist or dental professional to determine what the best x-ray frequency is for you.