Camel molar tooth enamel response to gamma rays using EPR spectroscopy.

Area of Science:

• Radiological Physics
• Biomaterials Science
• Dosimetry

Background:

• Electron paramagnetic resonance (EPR) spectroscopy is a method for detecting radiation-induced defects.
• Tooth enamel's stable structure makes it a potential material for retrospective dosimetry.
• Investigating novel biological materials for dosimetry applications is crucial for radiation safety and research.

Purpose of the Study:

• To evaluate the potential of camel tooth enamel for retrospective gamma dosimetry.
• To compare the EPR dose response of camel enamel with that of human enamel.
• To determine the feasibility of using camel teeth as a dosimeter for gamma radiation.

Main Methods:

• Preparation of camel molar tooth enamel samples using mechanical and chemical treatments.
• Irradiation of enamel samples with gamma doses ranging from 1 Gy to 100 kGy.
• Analysis of samples using electron paramagnetic resonance (EPR) spectroscopy to determine dose response and signal characteristics.

Main Results:

• Camel tooth enamel exhibits a linear EPR dose response up to approximately 15 kGy, with saturation at higher doses.
• The native signal location in camel enamel (g ≈ 2.00644) is similar to human enamel but distinct from bovine and caprine enamel.
• Camel enamel demonstrated a 36% lower response to gamma radiation compared to human enamel, with similar peak-to-peak widths.

Conclusions:

• Camel teeth are suitable for retrospective gamma dosimetry due to their dose-dependent EPR signal.
• The findings suggest camel enamel can be used to estimate past gamma radiation exposure.
• Camel enamel offers a viable alternative biological dosimeter, particularly for specific dose ranges and environmental conditions.