Research on the detection of early caries based on hyperspectral imaging

Objective: We applied hyperspectral imaging (HSI) system to distinguish early caries from sound and pigmented areas. It will provide a theoretical basis and technical support, for research and development of an instrument that could be used for screening and detection of early dental caries. Methods...

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Main Authors: Cheng Wang, Haoying Zhang, Guangyun Lai, Songzhu Hu, Jun Wang, Dawei Zhang
Format: Article
Language:English
Published: World Scientific Publishing 2023-05-01
Series:Journal of Innovative Optical Health Sciences
Subjects:
Online Access:https://www.worldscientific.com/doi/10.1142/S1793545822500365
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author Cheng Wang
Haoying Zhang
Guangyun Lai
Songzhu Hu
Jun Wang
Dawei Zhang
author_facet Cheng Wang
Haoying Zhang
Guangyun Lai
Songzhu Hu
Jun Wang
Dawei Zhang
author_sort Cheng Wang
collection DOAJ
description Objective: We applied hyperspectral imaging (HSI) system to distinguish early caries from sound and pigmented areas. It will provide a theoretical basis and technical support, for research and development of an instrument that could be used for screening and detection of early dental caries. Methods: Eighteen extracted human teeth (molars and premolars), with varying degrees of natural pathology and no degree of decay involving dentin were obtained. HSI system with a wavelength range from 400 to 1000[Formula: see text]nm was used to obtain images of all 18 teeth containing sound, carious and pigmented areas. We compared the spectra of the wavebands at both 500[Formula: see text]nm and 780[Formula: see text]nm from the different tooth states, and the reflectance difference between sound versus carious lesions and sound versus pigmented areas, respectively. Results: There was a slight difference in reflectance between carious areas and pigmented areas at 500[Formula: see text]nm. A substantial difference was additionally noted in reflectance between carious areas and pigmented areas at 780[Formula: see text]nm. Conclusion: The results have shown that the interference of tooth surface pigment can be eliminated in the near-infrared (NIR) waveband, and the caries can be effectively identified from the pigmented areas. Thus, it could be used to detect carious areas of teeth in place of the traditional visual inspection method or white light endoscopy. Clinical significance: The NIR diffused light signal enables the identification of early caries from pigment and other interference, providing a reasonable detection tool for early detection and early treatment of teeth diseases.
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spelling doaj.art-98edbb190e6e4cd0bf16eca9bf497bde2023-05-16T06:39:07ZengWorld Scientific PublishingJournal of Innovative Optical Health Sciences1793-54581793-72052023-05-01160310.1142/S1793545822500365Research on the detection of early caries based on hyperspectral imagingCheng Wang0Haoying Zhang1Guangyun Lai2Songzhu Hu3Jun Wang4Dawei Zhang5Institute of Biomedical Optics and Optometry, Key Laboratory of Medical Optical Technology and Instruments Ministry of Education, University of Shanghai for Science & Technology, 200093, P. R. ChinaInstitute of Biomedical Optics and Optometry, Key Laboratory of Medical Optical Technology and Instruments Ministry of Education, University of Shanghai for Science & Technology, 200093, P. R. ChinaDepartment of Paediatric Dentistry, Ninth People’s Hospital, Shanghai Jiaotong University, 200011, P. R. ChinaEquipment Department, Nantong Hospital of Traditional Chinese Medicine, 226007, P. R. ChinaDepartment of Paediatric Dentistry, Ninth People’s Hospital, Shanghai Jiaotong University, 200011, P. R. ChinaEngineering Research Centre for Optical Instruments and Systems, Ministry of Education, Shanghai Key Laboratory of Modern Optical Systems, University of Shanghai for Science & Technology, 200093, P. R. ChinaObjective: We applied hyperspectral imaging (HSI) system to distinguish early caries from sound and pigmented areas. It will provide a theoretical basis and technical support, for research and development of an instrument that could be used for screening and detection of early dental caries. Methods: Eighteen extracted human teeth (molars and premolars), with varying degrees of natural pathology and no degree of decay involving dentin were obtained. HSI system with a wavelength range from 400 to 1000[Formula: see text]nm was used to obtain images of all 18 teeth containing sound, carious and pigmented areas. We compared the spectra of the wavebands at both 500[Formula: see text]nm and 780[Formula: see text]nm from the different tooth states, and the reflectance difference between sound versus carious lesions and sound versus pigmented areas, respectively. Results: There was a slight difference in reflectance between carious areas and pigmented areas at 500[Formula: see text]nm. A substantial difference was additionally noted in reflectance between carious areas and pigmented areas at 780[Formula: see text]nm. Conclusion: The results have shown that the interference of tooth surface pigment can be eliminated in the near-infrared (NIR) waveband, and the caries can be effectively identified from the pigmented areas. Thus, it could be used to detect carious areas of teeth in place of the traditional visual inspection method or white light endoscopy. Clinical significance: The NIR diffused light signal enables the identification of early caries from pigment and other interference, providing a reasonable detection tool for early detection and early treatment of teeth diseases.https://www.worldscientific.com/doi/10.1142/S1793545822500365Hyperspectral imagingnear-infrared lightearly dental cariesspectral reflectance
spellingShingle Cheng Wang
Haoying Zhang
Guangyun Lai
Songzhu Hu
Jun Wang
Dawei Zhang
Research on the detection of early caries based on hyperspectral imaging
Journal of Innovative Optical Health Sciences
Hyperspectral imaging
near-infrared light
early dental caries
spectral reflectance
title Research on the detection of early caries based on hyperspectral imaging
title_full Research on the detection of early caries based on hyperspectral imaging
title_fullStr Research on the detection of early caries based on hyperspectral imaging
title_full_unstemmed Research on the detection of early caries based on hyperspectral imaging
title_short Research on the detection of early caries based on hyperspectral imaging
title_sort research on the detection of early caries based on hyperspectral imaging
topic Hyperspectral imaging
near-infrared light
early dental caries
spectral reflectance
url https://www.worldscientific.com/doi/10.1142/S1793545822500365
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