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The Raelian Movement
for those who are not afraid of the future : http://www.rael.org
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Dental X-rays tied to brain tumour
REUTERS
People who get regular dental X-rays are more likely to suffer a common type of brain tumor, US researchers say.
Washington - People who get regular dental X-rays are more likely to suffer a common type of brain tumour, US researchers said on Tuesday, suggesting that yearly exams may not be best for most patients.
The study in the US journal Cancer showed people diagnosed with meningioma who reported having a yearly bitewing exam were 1.4 times to 1.9 times as likely as a healthy control group to have developed such tumours.
A bitewing exam involves an X-ray film being held in place by a tab between the teeth.
Also, people who reported getting a yearly panorex exam - in which an X-ray is taken outside the mouth and shows all the teeth on one film - were 2.7 to three times more likely to develop cancer, said the study.
A meningioma is a tumour that forms in the membrane around the brain or spinal cord. Most of the time these tumours are benign and slow growing, but they can lead to disability or life-threatening conditions.
The research, led by Elizabeth Claus of the Yale University School of Medicine, was based on data from 1,433 US patients who were diagnosed with the tumours between the ages of ages 20-79.
For comparison, researchers consulted data from a control group of 1,350 individuals who had similar characteristics but had not been diagnosed with a meningioma.
Dental patients today are exposed to lower radiation levels than they were in the past, but the research should prompt dentists and patients to re-examine when and why dental X-rays are given, said Claus.
“The study presents an ideal opportunity in public health to increase awareness regarding the optimal use of dental X-rays, which unlike many risk factors is modifiable,” she said.
The American Dental Association's guidelines call for children to get one X-ray every one to two years; teens to have one every 1.5 to three years, and adults every two to three years.
The ADA said in 2006 there was little evidence to back up the routine use of full-mouth dental X-rays in patients without any symptoms.
Michael Schulder, vice chairman of the department of neurosurgery at Cushing Neuroscience Institute, part of the North Shore Long Island Jewish Health System in New York, said he was not shocked by the findings.
“This should come as no great surprise given the connection between radiation and meningioma development that has been established in various other contexts,” said Schulder, who was not involved in the research.
“The chance of these tumours arising in patients who were X-rayed yearly still was low. Nonetheless, dentists and their patients should strongly consider obtaining X-rays less often than yearly unless symptoms suggest the need for imaging.” - Sapa-AFP
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WARNING FROM RAEL: For those who don't use their intelligence at its
full capacity, the label "selected by RAEL" on some articles does not
mean that I agree with their content or support it. "Selected by RAEL"
means that I believe it is important for the people of this planet to
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completely stupid and against our philosophy. When I selected articles
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for rain, I am sure no Rael-Science reader was stupid enough to believe
that I was supporting praying to change the weather. So, when I select
articles which are in favor of drugs, anti-Semitic, anti-Jewish, racist,
revisionist, or inciting hatred against any group or religion, or any
other stupid article, it does not mean that I support them. It just
means that it is important for all human beings to know about them.
Common sense, which is usually very good among our readers, is good
enough to understand that. When, like in the recent articles on drug
decriminalization, it is necessary to make it clearer, I add a comment,
which in this case was very clear: I support decriminalizing all drugs,
as it is stupid to throw depressed and sad people (as only depressed and
sad people use drugs) in prison and ruin their life with a criminal
record. That does not mean that there is any change to the Message which
says clearly that we must not use any drug except for medical purposes.
The same applies to the freedom of expression which must be absolute.
That does not mean again of course that I agree with anti-Jews,
anti-Semites, racists of any kind or anti-Raelians. But by knowing your
enemies or the enemies of your values, you are better equipped to fight
them. With love and respect of course, and with the wonderful sentence
of the French philosopher Voltaire in mind: "I disapprove of what you
say, but I will defend to the death your right to say it".
WARNING FROM RAEL: For those who don't use their intelligence at its
full capacity, the label "selected by RAEL" on some articles does not
mean that I agree with their content or support it. "Selected by RAEL"
means that I believe it is important for the people of this planet to
know about what people think or do, even when what they think or do is
completely stupid and against our philosophy. When I selected articles
in the past about stupid Christian fundamentalists in America praying
for rain, I am sure no Rael-Science reader was stupid enough to believe
that I was supporting praying to change the weather. So, when I select
articles which are in favor of drugs, anti-Semitic, anti-Jewish, racist,
revisionist, or inciting hatred against any group or religion, or any
other stupid article, it does not mean that I support them. It just
means that it is important for all human beings to know about them.
Common sense, which is usually very good among our readers, is good
enough to understand that. When, like in the recent articles on drug
decriminalization, it is necessary to make it clearer, I add a comment,
which in this case was very clear: I support decriminalizing all drugs,
as it is stupid to throw depressed and sad people (as only depressed and
sad people use drugs) in prison and ruin their life with a criminal
record. That does not mean that there is any change to the Message which
says clearly that we must not use any drug except for medical purposes.
The same applies to the freedom of expression which must be absolute.
That does not mean again of course that I agree with anti-Jews,
anti-Semites, racists of any kind or anti-Raelians. But by knowing your
enemies or the enemies of your values, you are better equipped to fight
them. With love and respect of course, and with the wonderful sentence
of the French philosopher Voltaire in mind: "I disapprove of what you
say, but I will defend to the death your right to say it".
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"Ethics" is simply a last-gasp attempt by deist conservatives and
orthodox dogmatics to keep humanity in ignorance and obscurantism,
through the well tried fermentation of fear, the fear of science and
new technologies.
There is nothing glorious about what our ancestors call history,
it is simply a succession of mistakes, intolerances and violations.
On the contrary, let us embrace Science and the new technologies
unfettered, for it is these which will liberate mankind from the
myth of god, and free us from our age old fears, from disease,
death and the sweat of labour.
Rael
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