Re[2]: Patient dose from dental radiography

[julian.gibbs@mcmail.vanderbilt.edu]

Dose at skin entry for intraoral dental films is now of the order of 1-1.5 mGy 
(sometimes a bit less) depending on projection and beam energy (dentists 
currently use machines ranging from ca 50 to 80 kVp half-wave rectified and in 
some newer machines 60-70 kVcp).  Skin dose from panoramics is difficult to 
specify because of the changing source-skin distance as the machine traverses 
its prescribed path.

Julian Gibbs

______________________________ Reply Separator _________________________________
Subject: Re: Patient dose from dental radiography
Author:  radsafe@romulus.ehs.uiuc.edu at +inet
Date:    2/13/97 10:38 AM


May I assume that this is skin entrance dose to the jaw?  
     
In Message Wed, 12 Feb 97 13:44:38 -0600,
  julian.gibbs@mcmail.vanderbilt.edu writes:
     
>     Current consensus estimates for effective dose (in some cases 
>     effective dose equivalent) from dental radiography:
>     
>        Full-mouth intraoral (ca 20 films)      40 uSv 
>        Panoramic                               10 uSv 
>     
>     These values assume state-of-the-art technology: fast screen/film, 
>     full collimation and filtration, etc.
>     
>     For details see White SC, Dentomaxillofacial Radiology 21:118, 1992. 
>
>    ====================================================================== 
>     S. Julian Gibbs, DDS, PhD                           Voice 615-322-3190 
>     Professor of Radiology                                FAX 615-322-3764 
>     Vanderbilt University Medical Center
>     Nashville TN 37232-2675    Internet julian.gibbs@mcmail.vanderbilt.edu 
>     ====================================================================== 
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William G. Nabor
University of California, Irvine
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