Dielectric Characterization of Healthy Human Teeth from 0.5 to 18 GHz with an Open-Ended Coaxial Probe

Author:

Berezhanska Mariya1ORCID,Godinho Daniela M.2ORCID,Maló Paulo3,Conceição Raquel C.2ORCID

Affiliation:

1. Physics Department, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516 Caparica, Portugal

2. Instituto de Biofísica e Engenharia Biomédica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal

3. MALO DENTAL INTERNATIONAL, 1700-029 Lisbon, Portugal

Abstract

Dental caries is a major oral health issue which compromises oral health, as it is the main cause of oral pain and tooth loss. Early caries detection is essential for effective clinical intervention. However, methods commonly employed for its diagnosis often fail to detect early caries lesions, which motivates the research for more effective diagnostic solutions. In this work, the relative permittivity of healthy permanent teeth, in caries-prone areas, was studied between 0.5 and 18 GHz. The reliability of such measurements is an important first step to, ultimately, evaluate the feasibility of a microwave device for caries detection. The open-ended coaxial probe technique was employed. Its performance showed to be compromised by the poor probe-tooth contact. We proposed a method based on applying coupling media to reduce this limitation. A decrease in the measured relative permittivity variability was observed when the space between the probe tip and tooth surface was filled by coupling media instead of air. The influence of the experimental conditions in the measurement result was found to be less than 5%. Measurements conducted in ex vivo teeth showed that the relative permittivity of the dental crown and root ranges between 10.0–11.0 and 8.0–9.5, respectively.

Funder

Fundação para a Ciência e Tecnologia

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry

Reference49 articles.

1. Rajendran, A., and Sundaram, S. (2009). Shafer’s Textbook of Oral Pathology, Elsevier. [6th ed.].

2. (2022, September 25). World Health Organization “Oral Health”. Available online: https://www.who.int/news-room/fact-sheets/detail/oral-health.

3. Dental Caries;Selwitz;Lancet,2007

4. Ferreira Zandona, A., and Longbottom, C. (2019). Detection and Assessment of Dental Caries, Springer International Publishing.

5. Methods for Caries Detection: An Overview;Parveen;Pak. Oral Dent. J.,2015

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Dielectric Characterisation of Human Parathyroid Glands at Microwave Frequencies;2024 18th European Conference on Antennas and Propagation (EuCAP);2024-03-17

2. Hybrid Simulation-Measurement Method for Broadband Dielectric Characterization of Synthetic Human Head Tissues;2023 IEEE Conference on Antenna Measurements and Applications (CAMA);2023-11-15

3. Non-destructive testing of human teeth using microwaves: a state-of-the-art review;Journal of Electrical Engineering;2023-02-01

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3