[ RadSafe ] Frequent dental X-rays linked to most common brain tumor

Chris Alston achris1999 at gmail.com
Tue Apr 10 10:02:52 CDT 2012


This certainly sounds intriguing.  But, without even reading it, I
would say that it is clearly a context in which one wants to be very
careful about claims of causality versus claims of a merely associated
risk.  The brain is not radio-sensitive for carcinogenicity, is it?.
What geometry of dental x-rays would induce or promote brain tumors,
but not those of, say, the salivary glands, tongue, gums, bones of the
jaw, or even the thyroid?

I worry a lot about folks barking up the wrong tree.  Witness the
to-do over the airport backscatter scanners, where the effective dose
is an insignificant fraction of that incurred in the course of the
actual airplane trip.


---------- Forwarded message ----------
From: ROY HERREN <royherren2005 at yahoo.com>
Date: Mon, Apr 9, 2012 at 11:36 PM
Subject: [ RadSafe ] Frequent dental X-rays linked to most common brain tumor
To: radsafe at agni.phys.iit.edu

As luck would have it I had my annual dental X-rays just this afternoon.

Frequent dental X-rays linked to most common brain tumorApril 10, 2012 in Cancer

People who received frequent dental x-rays in the past have an increased risk of
developing the most commonly diagnosed primary brain tumor in the United States.
That is the finding of a study published early online in Cancer, a peer-reviewed
journal of the American Cancer Society. Although dental x-rays are necessary in
many cases, these findings suggest that moderate use of this form of imaging may
be of benefit to some patients.

 Roy Herren
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