Exposure to dental X – rays is associated with potential risk of cancer , which was revealed in previous studies [6,7]. In the head and neck region, cancer risks caused by exposure to dental X – rays have been discussed.
Dental x – rays are one of the lowest radiation dose studies performed. A routine exam which includes 4 bitewings is about 0.005 mSv, which is less than one day of natural background radiation . It is also about the same amount of radiation exposure from a short airplane flight (~1-2 hrs).
The guidelines say children who are not at a high risk for cavities should get X – rays once every one to two years ; teens who are not at high risk should get them every year and a half to three years ; and adults who aren’t at high risk should get them every two to three years .
Medical Scans They’re acceptable sources of radiation that expose you to more radiation than your dentist will. For example, a CT scan of your chest will expose you to about 4 mSv of radiation each time you have one taken. One bitewing x – ray will expose you to just 0.002 mSv of radiation .
A single chest x – ray exposes the patient to about 0.1 mSv. This is about the same amount of radiation people are exposed to naturally over the course of about 10 days. A mammogram exposes a woman to 0.4 mSv, or about the amount a person would expect to get from natural background exposure over 7 weeks.
Risks of dental X – rays While dental X – rays do involve radiation, the exposed levels are so low that they’re considered safe for children and adults. If your dentist uses digital X – rays instead of developing them on film, your risks from radiation exposure are even lower.
Does any radiation stay in the body after an imaging exam? After a radiographic, fluoroscopic, CT, ultrasound, or MRI exam, no radiation remains in your body . For nuclear medicine imaging, a small amount of radiation can stay in the body for a short time.