Every day, we’re exposed to radiation. It comes from the sun, our cell phones, and even riding in an airplane (the longer the airplane ride, the more radiation you’re exposed to!)
But when you get a set of four “bitewing” X-rays (the images that are usually taken about once a year to check for new cavities,) the total amount of radiation is only about 0.005 mSv (micro-Sieverts,) which is less than an average daily dose of radiation in everyday life.
To give you an idea of other types of radiation encountered in everyday activities, consider these comparisons:
• Going through an airport security scanner 80 times is the equivalent to a single day of casual radiation exposure. 1,000 times equals the amount of radiation used for a chest X-ray.
• An average 7-hour plane ride exposes each passenger to approximately 0.02 mSv (or 16 small dental X-rays).