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用电子自旋共振 ( ESR)技术研究了健康成年人牙釉质中顺磁物质本底水平分布特性及其辐射敏感性。结果表明 ,在 1 8～ 4 1岁年龄范围内 ,牙釉中顺磁物质本底水平在不同性别及不同年龄组间没有显著差别 ;不同个体样品辐照后信号强度的分散度并未增加 ,说明个体间对同种射线的辐射敏感性差异不大。提示在上述年龄范围内 ,用异体牙釉作辐射剂量估算是可行的。
Electrospinning resonance (ESR) technique was used to study the horizontal distribution and the radiosensitivity of paramagnetic materials in healthy adult enamel. The results showed that there was no significant difference in the background level of paramagnetic materials in dental enamels between the age of 18 and 41 years in different genders and in different age groups. The dispersion of signal intensity did not increase after exposure to different samples, That individual radiation sensitivity of the same type of radiation is not different. It suggests that it is feasible to use allograft enamel for radiation dose estimation in the above age range.