EPR dosimetry with tooth enamel: A review

Area of Science:

• Solid State Physics
• Radiation Dosimetry
• Biomaterials Science

Background:

• Tooth enamel contains radicals detectable by electron paramagnetic resonance (EPR) after radiation exposure.
• EPR dosimetry in enamel relies on correlating radiation-induced signals with absorbed radiation dose.
• Understanding enamel properties and EPR signals is crucial for accurate dosimetry.

Purpose of the Study:

• To critically review the application of electron paramagnetic resonance (EPR) dosimetry using tooth enamel.
• To analyze fundamental aspects of enamel properties, radiation-induced radicals, and EPR detection methods.
• To evaluate practical implementation challenges, uncertainties, and future prospects of enamel EPR dosimetry.

Main Methods:

• Review of fundamental properties of tooth enamel and synthetic apatite model systems.
• Analysis of radiation-induced and native EPR signals and their responsible radicals.
• Evaluation of EPR detection, spectrum analysis, solid-state modeling, and dose-response linearity.

Main Results:

• Detailed examination of EPR signal characteristics and radical identification in irradiated tooth enamel.
• Assessment of sample preparation, irradiation, spectrum acquisition, and data retrieval techniques.
• Discussion of energy dependence, sources of uncertainty, intercomparison results, and epidemiological study challenges.

Conclusions:

• EPR dosimetry with tooth enamel is a widely applied method with established protocols.
• Critical review highlights areas for improvement in understanding signal mechanisms and reducing uncertainties.
• Future research should focus on refining solid-state modeling and dose-response linearity for enhanced accuracy.