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Influence of dental restorative materials on ESR biodosimetry in tooth enamel
- Source :
- Radiation research. 176(2)
- Publication Year :
- 2011
-
Abstract
- Using an experimental model and PENELOPE Monte Carlo simulations, the effects of resin and amalgam on the absorbed doses in tooth enamel were studied to evaluate the feasibility of using restored teeth in electron spin resonance (ESR) dose reconstruction. The model consisted of a phantom containing a plate of these restorative materials placed between powered enamel layers exposed to X rays and a ⁶⁰Co beam. The experimental results and simulations agreed, showing that the attenuation produced by amalgam and resin with a thickness of 1, 2, and 4 mm is similar to that produced by the enamel itself in the case of the radiation sources employed. For X rays and ⁶⁰Co γ radiation the attenuation reached almost 100% and 40%, respectively. These results show that for ESR dose reconstruction, the use of all available enamel of a tooth leads to errors in the estimated dose due to attenuation effects in both healthy and restored teeth. Thus the importance of an enamel selection from different sides of the tooth surface to apply ESR dose reconstruction in the case of a practical situation is shown.
- Subjects :
- Materials science
Biophysics
Dentistry
Radiation
engineering.material
Radiation Dosage
Dental Amalgam
Imaging phantom
stomatognathic system
Biodosimetry
medicine
Radiology, Nuclear Medicine and imaging
Dental Enamel
Dental Restoration, Permanent
Radiometry
Dental restorative materials
Enamel paint
business.industry
Attenuation
Electron Spin Resonance Spectroscopy
Tooth enamel
Amalgam (dentistry)
stomatognathic diseases
Resins, Synthetic
medicine.anatomical_structure
visual_art
engineering
visual_art.visual_art_medium
Feasibility Studies
business
Subjects
Details
- ISSN :
- 19385404
- Volume :
- 176
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Radiation research
- Accession number :
- edsair.doi.dedup.....679ea89d2171c76d1a305861490ddad6