Determination of in vitro radiation sensitivity of human tooth dentin to neutron and photon radiations using electron paramagnetic resonance spectroscopy

«Radiation and Risk», 2013, vol. 22, No. 4, pp.21-29


Khailov A.M. – Senior Researcher, C. Sc., Biol., Medical Radiological Research Center of the Russian Ministry of Health, Obninsk. Contacts: 4 Korolyov str., Obninsk, Kaluga region, Russia, 249036. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. .
Orlenko S.P. Research Assistant, Medical Radiological Research Center of the Russian Ministry of Health, Obninsk.
Skvortsov V.G.– Head of Lab., C. Sc., Biol., Medical Radiological Research Center of the Russian Ministry of Health, Obninsk.


The response of human tooth dentin and enamel to neutron and gamma radiation was investigated using EPR spectroscopy. The EPR signals magnitude of crown dentin is 8.6±1.3 times and root dentin is 9.5±2 times lower than the signals of enamel exposed to 60Co gamma rays. The relative response of enamel, dentin crown and  root  dentin  to  fast  neutrons  of  14  MeV  were  determined as 3.3±4.4%, 18.3±11.8%, and 36.9±18.9%, respectively. The dentin was shown to be a preferable tooth tissue for assessment of the neutron component and enamel – for assessment of the photon component of the dose from the mixed radiation field.

Key words
Tooth dentin, neutron radiation, EPR spectroscopy.


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