Influences of sample preparations on dentine ESR signals

ZHANG Wenyi; JIAO Ling; PAN Zhihong; ZENG Hongyu; ZHANG Liangan

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Influences of sample preparations on dentine ESR signals

更新时间：2023-03-30

- Influences of sample preparations on dentine ESR signals
- Journal of Radiation Research and Radiation Processing Vol. 23, Issue 3, Pages: 164-168(2005)
- 作者机构：
  
  1.中国医学科学院中国协和医科大学放射医学研究所　天津　300192
  2.广东江门市口腔医院　江门　529000
- 作者简介：
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ZHANG Wenyi, JIAO Ling, PAN Zhihong, et al. Influences of sample preparations on dentine ESR signals. [J]. Journal of Radiation Research and Radiation Processing 23(3):164-168(2005)
DOI：

ZHANG Wenyi, JIAO Ling, PAN Zhihong, et al. Influences of sample preparations on dentine ESR signals. [J]. Journal of Radiation Research and Radiation Processing 23(3):164-168(2005) DOI：

摘要

研究了不同制备方法对牙髓样品电子自旋共振（Electron spin resonance, ESR）信号的影响。无放射线照射史成年人群的臼齿分别用机械方法和机械方法加化学方法进行处理，制备牙髓样品和牙釉质样品。用,60,Co γ射线照射样品至不同剂量，测量其ESR信号。比较分析了单位质量样品对单位照射剂量的ESR信号响应灵敏度，以寻求能够有效降低牙髓样品本底信号对其剂量学信号的影响，提高牙髓样品ESR信号灵敏度的样品制备、处理方法。结果表明，不同方法制备的牙髓样品和牙釉质样品，其ESR信号对,60,Co γ射线的响应有十分明显的差异。在牙釉质样品缺乏的情况下，利用牙髓样品的ESR信号通过叠加剂量法对受照人员剂量进行重建是可行的。

Abstract

The work is to study influences of sample preparations on dentine ESR (electron spin resonance) signals, in order to use dentine samples for dose reconstruction, which has been performed with enamel samples. The dentine and enamel samples were collected from non-irradiated adult teeth and prepared by mechanical or mechanical plus chemical methods. The samples were scanned by an ESR spectrometer before and after their irradiation by ,60,Co γ-rays. The sensitivities of ESR signals of dentine and enamel samples to irradiation dose differed significantly among different sample preparation methods. The results show that dentine samples mechanically and chemically prepared have good enough ESR response to low dose γ-ray irradiations, and it is possible to use the dentine samples for dose reconstruction, as a substitution to enamel samples when they are short of supply.

关键词

电子自旋共振牙髓样品制备

Keywords

Electron spin resonanceDentineSample preparation

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