Comparison Between Deciduous And Permanent Teeth in Relation to their Utility for EPR Dosimetry Comparison Between Deciduous And Permanent Teeth in Relation to their Utility for EPR Dosimetry

Introduction Ionizing radiation generates extremly long lived CO2 radicals in calcified tissue. The CO2 concentration rises linearly with dose and can be detected directly by means of EPR spectroscopy (electron paramagnetic resonanc). For retrospective dose estimation tooth enamel and dentine as well as bone samples may be used as in-vivo-dosimeter. Enamel analysis of permanent teeth has been extensivly reported in the literature [1, 5]. But only few investigations were carried out on deciduous teeth giving results which indicate a twofold decrease in dose response compared with permanent teeth [7]. Our objective is to figure out possible differences concerning chemical composition, background signal and dose response in comparison to permanent teeth for the utility of deciduous teeth as reliable detector material.