Fear sells, and the media loves it. If it’s scary, no matter how tenuous the link or inconclusive the study, you are going to see it on the news. How many times over the years have you heard that your cell phone might give you brain cancer, even though it never turns out to be true? Once such a claim is made, however, it becomes lodged into the public’s psyche and is accepted as true, even after refutations and retractions are published (see Wakefield, Andrew).
And so it is with x-rays. The latest scare du jour, a recent study out of Yale that claims to show a correlation between dental x-rays and intracranial meningioma — the most common brain tumor and usually benign — has been enjoying widespread attention in newspapers and on the evening news. We don’t know if it will be on Dr. Oz, because we can’t bring ourselves to watch that show, but we feel the chances are good. Other alt-medders will no doubt have collective woogasms over the story and will further incite fear and mistrust into the doctor-patient relationship. In fact, the Mercola website wasted no time in weighing in:
While this study does not necessarily establish causation between dental X-rays and tumors, previous research has also implicated dental X-rays in the development of thyroid cancer, and research clearly shows this type of radiation is not harmless…
Typical alarmist fear-mongering. When has any health care professional claimed that radiation is harmless? This is not cutting edge research; Wilhelm Röntgen, the discoverer of x-rays in 1895 and winner of the Nobel Prize in 1901 for his research in the field, advocated the use of lead aprons for protection from the ionizing radiation way back when. Further, trying to lump one study linking dental x-rays to meningioma to another study linking them to thyroid cancer is taking quite the kitchen sink approach. But if there are multiple alleged possible potential theoretical adverse effects from our dental death rays, it must be true, right?
Well, not so fast. We’re dentists, and unlike many knee-jerkers, we’ve actually read the study and would like to offer a little bit of insight into this before everyone panics. In fact, with respect to Letterman, we’d like to offer our Top Three Reasons Not To Panic:
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