Radiation and Environmental Biophysics

, Volume 57, Issue 1, pp 63–68 | Cite as

Camel molar tooth enamel response to gamma rays using EPR spectroscopy

  • N. A. El-FaramawyEmail author
  • I. El-Somany
  • A. Mansour
  • A. M. Maghraby
  • H. Eissa
  • A. Wieser
Original Article


Tooth enamel samples from molar teeth of camel were prepared using a combined procedure of mechanical and chemical tooth treatment. Based on electron paramagnetic resonance (EPR) spectroscopy, the dose response of tooth enamel samples was examined and compared to that of human enamel. The EPR dose response of the tooth enamel samples was obtained through irradiation to gamma doses from 1 Gy up to 100 kGy. It was found that the radiation-induced EPR signal increased linearly with gamma dose for all studied tooth enamel samples, up to about 15 kGy. At higher doses, the dose response curve leveled off. The results revealed that the location of the native signal of camel tooth enamel was similar to that of enamel from human molars at 2.00644, but different from that of enamel from cows and goats. In addition, the peak-to-peak width (ΔH pp) for human and camel molar teeth was similar. It was also found that the response of camel enamel to gamma radiation was 36% lower than that of human enamel. In conclusion, the results indicate the suitability of camel teeth for retrospective gamma dosimetry.


EPR dosimetry Camel Gamma ray sensitivity Retrospective dosimetry 


Compliance with ethical standards

Conflict of interest

The authors did not receive any grants or financial supports to assess any stage of this article.


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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • N. A. El-Faramawy
    • 1
    Email author
  • I. El-Somany
    • 1
  • A. Mansour
    • 2
  • A. M. Maghraby
    • 3
  • H. Eissa
    • 3
  • A. Wieser
    • 4
  1. 1.Physics Department, Faculty of ScienceAin Shams UniversityCairoEgypt
  2. 2.National Center for Radiation Research and Technology, Atomic Energy AuthorityCairoEgypt
  3. 3.Ionizing Radiation Metrology LaboratoryNational Institute of Standards (NIS)GizaEgypt
  4. 4.Helmholtz Zentrum München-German Research Center for Environmental Health, Department of Radiation Sciences, Institute of Radiation ProtectionNeuherbergGermany

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