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Retrospective dosimetry using OSL of tooth enamel and dental repair materials irradiated under wet and dry conditions.

Geber, Therese LU ; Bernhardsson, Christian LU ; Mattsson, Sören LU and Rääf, Christopher LU (2012) In Radiation and Environmental Biophysics 51(4). p.443-449
Abstract
Following a radiological or nuclear emergency event, there is a need for quick and reliable dose estimations of potentially exposed people. In situations where dosimeters are not readily available, the dose estimations must be carried out using alternative methods. In the present study, the optically stimulated luminescence (OSL) properties of tooth enamel and different dental repair materials have been examined. Specimens of the materials were exposed to gamma and beta radiation in different types of liquid environments to mimic the actual irradiation situation in the mouth. Measurements were taken using a Risø TL/OSL reader, and irradiations were made using a (90)Sr/(90)Y source and a linear accelerator (6 MV photons). Results show that... (More)
Following a radiological or nuclear emergency event, there is a need for quick and reliable dose estimations of potentially exposed people. In situations where dosimeters are not readily available, the dose estimations must be carried out using alternative methods. In the present study, the optically stimulated luminescence (OSL) properties of tooth enamel and different dental repair materials have been examined. Specimens of the materials were exposed to gamma and beta radiation in different types of liquid environments to mimic the actual irradiation situation in the mouth. Measurements were taken using a Risø TL/OSL reader, and irradiations were made using a (90)Sr/(90)Y source and a linear accelerator (6 MV photons). Results show that the OSL signal from tooth enamel decreases substantially when the enamel is kept in a wet environment. Thus, tooth enamel is not reliable for retrospective dose assessment without further studies of the phenomenon. Dental repair materials, on the other hand, do not exhibit the same effect when exposed to liquids. In addition, dose-response and fading measurements of the dental repair materials show promising results, making these materials highly interesting for retrospective dosimetry. The minimum detectable dose for the dental repair materials has been estimated to be 20-185 mGy. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Radiation and Environmental Biophysics
volume
51
issue
4
pages
443 - 449
publisher
Springer
external identifiers
  • WOS:000310227800008
  • PMID:22972601
  • Scopus:84867883624
ISSN
1432-2099
DOI
10.1007/s00411-012-0434-9
language
English
LU publication?
yes
id
275ffe7a-39da-4369-88a1-4d00ee6dff8d (old id 3123998)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/22972601?dopt=Abstract
date added to LUP
2012-10-03 21:24:24
date last changed
2016-11-20 04:24:28
@misc{275ffe7a-39da-4369-88a1-4d00ee6dff8d,
  abstract     = {Following a radiological or nuclear emergency event, there is a need for quick and reliable dose estimations of potentially exposed people. In situations where dosimeters are not readily available, the dose estimations must be carried out using alternative methods. In the present study, the optically stimulated luminescence (OSL) properties of tooth enamel and different dental repair materials have been examined. Specimens of the materials were exposed to gamma and beta radiation in different types of liquid environments to mimic the actual irradiation situation in the mouth. Measurements were taken using a Risø TL/OSL reader, and irradiations were made using a (90)Sr/(90)Y source and a linear accelerator (6 MV photons). Results show that the OSL signal from tooth enamel decreases substantially when the enamel is kept in a wet environment. Thus, tooth enamel is not reliable for retrospective dose assessment without further studies of the phenomenon. Dental repair materials, on the other hand, do not exhibit the same effect when exposed to liquids. In addition, dose-response and fading measurements of the dental repair materials show promising results, making these materials highly interesting for retrospective dosimetry. The minimum detectable dose for the dental repair materials has been estimated to be 20-185 mGy.},
  author       = {Geber, Therese and Bernhardsson, Christian and Mattsson, Sören and Rääf, Christopher},
  issn         = {1432-2099},
  language     = {eng},
  number       = {4},
  pages        = {443--449},
  publisher    = {ARRAY(0x9228408)},
  series       = {Radiation and Environmental Biophysics},
  title        = {Retrospective dosimetry using OSL of tooth enamel and dental repair materials irradiated under wet and dry conditions.},
  url          = {http://dx.doi.org/10.1007/s00411-012-0434-9},
  volume       = {51},
  year         = {2012},
}