[Oradlist] Use thyroid collars and aprons

Yang, Jie JYANG at DENTAL.Temple.edu
Thu Jul 7 11:24:14 PDT 2005

Dear Sharon, Brenda, and Thomas:
Thank you for the information. I assume that most States and schools do
require using thyroid collars and aprons before the recommendations of
NCRP 145 are adopted by the States.
-----Original Message-----
From: oradlist-bounces at lists.ucla.edu
[mailto:oradlist-bounces at lists.ucla.edu] On Behalf Of Sharon Brooks
Sent: Wednesday, July 06, 2005 3:34 PM
To: Oral Radiology Discussion Group
Subject: Re: [Oradlist] Use thyroid collars and aprons
I received the same information from the ADA but so far have not had any
questions from local dentists. We still use the apron and collar
Sharon Brooks 
On Jul 5, 2005, at 3:41 PM, Yang, Jie wrote: 
	Dear Colleagues: 
	Several dentists in Pennsylvania forwarded the following message
to me regarding ADA news and the National Academy of Science's report on
biological effects of low dose radiation and threshold. They were asking
whether or not they should use thyroid collars and aprons on all their
patients during dental x-rays although Pennsylvania Code for
Environmental Protection does not require using them. 
	Have you received the same information from ADA and questions
from your local dentists? If so, what would be your responses to them? 
	Thank you. 
	<image.tiff><image.tiff>June 30, 2005 
	A forum for breaking news and 
	timely information from the ADA 
	<image.tiff>Health Effects of Radiation 
	The National Academy of Sciences (NAS) just released a report on
the health effects of very low doses of radiation. This report was
developed after an investigation of the theory that there is a threshold
dose of radiation below which cancer is not induced. According to the
chair of the committee that developed the report, the health risk posed
by radiation from x-rays and other health procedures is so small that it
should not deter people from seeking needed medical care. However, the
report supports previously reported risk estimates and states, "It is
unlikely that there is a threshold below which cancer (is) not induced."

	The committee estimated that 1 out of 100 people would likely
develop solid cancer or leukemia from an exposure to 100 millisievert of
radiation over a lifetime, with half of those cases being fatal. The
report states that in the United States people are exposed to background
radiation at an average dose of 3 millisieverts annually, and according
to the Centers for Disease Control and Prevention, the radiation dose
from a dental x-ray ranges from 0.04 to 0.15 millisievert. Media
interest is anticipated, given the topic's broad appeal. 
	The ADA standby response to the NAS report is on ADA.org and
highlights the Association's long-standing recommendations that
encourage dentists to: 
	* Follow the ALARA (As Low As Reasonably Achievable) principle
and order x-rays only when necessary for diagnosis; and 
	* Appropriately use protective thyroid collars and aprons on all
patients during x-rays 
	<image.tiff><image.tiff><image.tiff>This ADA E-Gram is brought
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Enterprises, Inc., a for-profit subsidiary of the American Dental
Association. Copyright (c) 2005 American Dental Association.
Reproduction or republication strictly prohibited without prior written
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	To unsubscribe from our e-mail list, please click here. 
	Jie Yang, DDS, MMedSc, MS, DMD, Dip. ABOMR 
	Associate Professor & Director of Oral and Maxillofacial
	Temple University School of Dentistry 
	Associate Professor of Radiology 
	Temple University School of Medicine 
	Associate Professor of Oral Biology 
	Temple University Graduate School 
	3223 North Broad Street 
	Philadelphia, PA 19140, USA 
	Tel. 215-707-1579 
	Fax. 215-707-5719 
	 mailto:jyang at dental.temple.edu 
	Oradlist mailing list 
	Oradlist at lists.ucla.edu 
Sharon L. Brooks, DDS, MS 
Diplomate, American Board of Oral and Maxillofacial Radiology 
University of Michigan School of Dentistry 
Department of Oral Medicine/Pathology/Oncology 
Ann Arbor, MI 48109-1078 USA 
Tel: +1 734-764-1595 Fax +1-734-764-2469 
slbrooks at umich.edu 
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