Open AccessPreparation-induced errors in EPR dosimetry of enamel: pre- and post-crushing sensitivity
Author(s) -
E.H. Haskell,
Robert B. Hayes,
G.H. Kenner
Publication year - 1996
Language(s) - English
Resource type - Reports
DOI - 10.2172/483333
Subject(s) - enamel paint , tooth enamel , irradiation , materials science , dosimetry , radiation sensitivity , electron paramagnetic resonance , grain size , sensitivity (control systems) , dentistry , mineralogy , composite material , nuclear magnetic resonance , nuclear medicine , chemistry , medicine , physics , engineering , nuclear physics , electronic engineering
Errors in dose estimation as a function of grain size for tooth enamel has been previously shown for beta irradiation after crushing. We tested the effect of gamma radiation applied to specimens before and after crushing. We extend the previous work in that we found that post-crushing irradiation altered the slope of the dose-response curve of the hydroxyapatite signal and produced a grain-size dependent offset. No changes in the slope of the dose-response curve were seen in enamel caps irradiated before crushing