An analysis of paramagnetic centers in irradiated dentin using electron spin resonance.
The ESR spectra produced in irradiated dentin have been studied over a range of incident radiation energies from 50 kVp to 25 MVp. The behavior of the dentin ESR signal strength is similar to that of enamel as a function of the energy of the incident radiation. The magnitude of the dentin ESR signals are, however, up to 10 times smaller than the signals of dental enamel for a given radiation energy. The possible contributions of radiation interaction coefficients, chemical structure, and crystallite size to the differences in ESR spectra are discussed.
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Department of Oral Surgery and Oral Diagnosis, Faculty of Dentistry, Dalhousie University, Halifax, Nova Scotia, Canada.
Aldrich
J E
JE
Scallion
P L
PL
D003804:Dentin / Q000032:analysis / Q000528:radiation effects*; D004578:Electron Spin Resonance Spectroscopy; D006801:Humans; D014070:Tooth / Q000032:analysis / Q000528:radiation effects