不同牙硬组织成分的太赫兹时域光谱特征研究

蔡江文; 熊宇; 朱礼国; 钟森城; 寇婷婷; 崔岳; 朱璨; 周继祥

doi:10.16016/j.1000-5404.201801181

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不同牙硬组织成分的太赫兹时域光谱特征研究

生物医学工程 | 更新时间：2026-01-09

- 不同牙硬组织成分的太赫兹时域光谱特征研究
- Properties of human dental hard tissues by THz-SDs transmission system
- 第三军医大学学报 2018年40卷第11期页码：1048-1052, 封三
- 作者机构：
- 作者简介：
- 基金信息：
  
  物理与生物医学交叉实验室孵化基金(WWS-2015-10)
- DOI：10.16016/j.1000-5404.201801181
  中图分类号：
- 收稿：2018-01-22，
  
  纸质出版：2018-06-15
- 稿件说明：
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蔡江文, 熊宇, 朱礼国, 等. 不同牙硬组织成分的太赫兹时域光谱特征研究[J]. 第三军医大学学报, 2018,40(11):1048-1052, 封三.

Jiangwen CAI, Yu XIONG, Liguo ZHU, et al. Properties of human dental hard tissues by THz-SDs transmission system[J]. Journal of Third Military Medical University, 2018, 40(11): 1048-1052, 封三.
蔡江文, 熊宇, 朱礼国, 等. 不同牙硬组织成分的太赫兹时域光谱特征研究[J]. 第三军医大学学报, 2018,40(11):1048-1052, 封三. DOI： 10.16016/j.1000-5404.201801181.

Jiangwen CAI, Yu XIONG, Liguo ZHU, et al. Properties of human dental hard tissues by THz-SDs transmission system[J]. Journal of Third Military Medical University, 2018, 40(11): 1048-1052, 封三. DOI： 10.16016/j.1000-5404.201801181.

摘要

Abstract

Objective

To explore the spectroscopical properties of human normal enamel and dentine by Terahertz time-domain spectroscopy (THz-SDs) transmission system

and to investigate the best parameter and frequency for imaging.

Methods

Fifteen intact third molars were freshly extracted and sliced mesiodistally to 0.7 mm in thickness

and ground serially with sand-papers under running tap water. Terahertz spectrum of enamel and dentin were obtained with the THz-SDs

and then the absorption coefficient

refractive index and refractive index ratio of the dental hard tissues were calculated in the frequency of 0.2 to 1.3 THz.

Results

① The absorption coefficient of enamel was statistically significantly different with that of dentin at 0.3

0.5 and 0.6 THz (

0.05); ② Obvious differences were also observed in the refractive index between enamel and dentin at the range of 0.2~1.3 THz (

0.05); ③ Since the refractive index may be more suitable to image the human dental hard tissue

and 0.3 THz was chosen to get the best contrast.

Conclusion

Terahertz can be used to identify enamel and dentin

and refractive index is more suitable to image dental hard tissue. At 0.3 THz

the refractive index contrast of enamel and dentin is the largest.

关键词

Keywords

references

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