Assessment of natural enamel lesions with optical coherence tomography in comparison with microfocus X-ray computed tomography

Jorge Espigares, Alireza Sadr, Hidenori Hamba, Yasushi Shimada, Masayuki Otsuki, Junji Tagami, Yasunori Sumi

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

A technology to characterize early enamel lesions is needed in dentistry. Optical coherence tomography (OCT) is a noninvasive method that provides high-resolution cross-sectional images. The aim of this study is to compare OCT with microfocus X-ray computed tomography (μCT) for assessment of natural enamel lesions in vitro. Ten human teeth with visible white spot-like changes on the enamel smooth surface and no cavitation (ICDAS code 2) were subjected to imaging by μCT (SMX-100CT, Shimadzu) and 1300-nm swept-source OCT (Dental SS-OCT, Panasonic Health Care). In μCT, the lesions appeared as radiolucent dark areas, while in SS-OCT, they appeared as areas of increased signal intensity beneath the surface. An SS-OCT attenuation coefficient based on Beer-Lambert law could discriminate lesions from sound enamel. Lesion depth ranged from 175 to 606 μm in SS-OCT. A correlation between μCT and SS-OCT was found regarding lesion depth (R=0.81, p<0.001) and also surface layer thickness (R=0.76, p<0.005). The images obtained clinically in real time using the dental SS-OCT system are suitable for the assessment of natural subsurface lesions and their surface layer, providing comparable images to a laboratory high-resolution μCT without the use of X-ray.

Original languageEnglish
Article number014001
JournalJournal of Medical Imaging
Volume2
Issue number1
DOIs
Publication statusPublished - Jan 1 2015
Externally publishedYes

Fingerprint

X Ray Computed Tomography
Enamels
Optical tomography
Optical Coherence Tomography
Dental Enamel
Tomography
X rays
Tooth
Dentistry
Dental Caries
Health care
Cavitation
X-Rays
Acoustic waves
Technology
Delivery of Health Care
Imaging techniques

Keywords

  • dentistry
  • enamel
  • optical coherence tomography
  • optical properties
  • tissue characterization
  • X-ray imaging

ASJC Scopus subject areas

  • Bioengineering
  • Radiology Nuclear Medicine and imaging

Cite this

Assessment of natural enamel lesions with optical coherence tomography in comparison with microfocus X-ray computed tomography. / Espigares, Jorge; Sadr, Alireza; Hamba, Hidenori; Shimada, Yasushi; Otsuki, Masayuki; Tagami, Junji; Sumi, Yasunori.

In: Journal of Medical Imaging, Vol. 2, No. 1, 014001, 01.01.2015.

Research output: Contribution to journalArticle

Espigares, Jorge ; Sadr, Alireza ; Hamba, Hidenori ; Shimada, Yasushi ; Otsuki, Masayuki ; Tagami, Junji ; Sumi, Yasunori. / Assessment of natural enamel lesions with optical coherence tomography in comparison with microfocus X-ray computed tomography. In: Journal of Medical Imaging. 2015 ; Vol. 2, No. 1.
@article{246ef0c9777a430ab7215fbea1b49916,
title = "Assessment of natural enamel lesions with optical coherence tomography in comparison with microfocus X-ray computed tomography",
abstract = "A technology to characterize early enamel lesions is needed in dentistry. Optical coherence tomography (OCT) is a noninvasive method that provides high-resolution cross-sectional images. The aim of this study is to compare OCT with microfocus X-ray computed tomography (μCT) for assessment of natural enamel lesions in vitro. Ten human teeth with visible white spot-like changes on the enamel smooth surface and no cavitation (ICDAS code 2) were subjected to imaging by μCT (SMX-100CT, Shimadzu) and 1300-nm swept-source OCT (Dental SS-OCT, Panasonic Health Care). In μCT, the lesions appeared as radiolucent dark areas, while in SS-OCT, they appeared as areas of increased signal intensity beneath the surface. An SS-OCT attenuation coefficient based on Beer-Lambert law could discriminate lesions from sound enamel. Lesion depth ranged from 175 to 606 μm in SS-OCT. A correlation between μCT and SS-OCT was found regarding lesion depth (R=0.81, p<0.001) and also surface layer thickness (R=0.76, p<0.005). The images obtained clinically in real time using the dental SS-OCT system are suitable for the assessment of natural subsurface lesions and their surface layer, providing comparable images to a laboratory high-resolution μCT without the use of X-ray.",
keywords = "dentistry, enamel, optical coherence tomography, optical properties, tissue characterization, X-ray imaging",
author = "Jorge Espigares and Alireza Sadr and Hidenori Hamba and Yasushi Shimada and Masayuki Otsuki and Junji Tagami and Yasunori Sumi",
year = "2015",
month = "1",
day = "1",
doi = "10.1117/1.JMI.2.1.014001",
language = "English",
volume = "2",
journal = "Journal of Medical Imaging",
issn = "0720-048X",
publisher = "Elsevier Ireland Ltd",
number = "1",

}

TY - JOUR

T1 - Assessment of natural enamel lesions with optical coherence tomography in comparison with microfocus X-ray computed tomography

AU - Espigares, Jorge

AU - Sadr, Alireza

AU - Hamba, Hidenori

AU - Shimada, Yasushi

AU - Otsuki, Masayuki

AU - Tagami, Junji

AU - Sumi, Yasunori

PY - 2015/1/1

Y1 - 2015/1/1

N2 - A technology to characterize early enamel lesions is needed in dentistry. Optical coherence tomography (OCT) is a noninvasive method that provides high-resolution cross-sectional images. The aim of this study is to compare OCT with microfocus X-ray computed tomography (μCT) for assessment of natural enamel lesions in vitro. Ten human teeth with visible white spot-like changes on the enamel smooth surface and no cavitation (ICDAS code 2) were subjected to imaging by μCT (SMX-100CT, Shimadzu) and 1300-nm swept-source OCT (Dental SS-OCT, Panasonic Health Care). In μCT, the lesions appeared as radiolucent dark areas, while in SS-OCT, they appeared as areas of increased signal intensity beneath the surface. An SS-OCT attenuation coefficient based on Beer-Lambert law could discriminate lesions from sound enamel. Lesion depth ranged from 175 to 606 μm in SS-OCT. A correlation between μCT and SS-OCT was found regarding lesion depth (R=0.81, p<0.001) and also surface layer thickness (R=0.76, p<0.005). The images obtained clinically in real time using the dental SS-OCT system are suitable for the assessment of natural subsurface lesions and their surface layer, providing comparable images to a laboratory high-resolution μCT without the use of X-ray.

AB - A technology to characterize early enamel lesions is needed in dentistry. Optical coherence tomography (OCT) is a noninvasive method that provides high-resolution cross-sectional images. The aim of this study is to compare OCT with microfocus X-ray computed tomography (μCT) for assessment of natural enamel lesions in vitro. Ten human teeth with visible white spot-like changes on the enamel smooth surface and no cavitation (ICDAS code 2) were subjected to imaging by μCT (SMX-100CT, Shimadzu) and 1300-nm swept-source OCT (Dental SS-OCT, Panasonic Health Care). In μCT, the lesions appeared as radiolucent dark areas, while in SS-OCT, they appeared as areas of increased signal intensity beneath the surface. An SS-OCT attenuation coefficient based on Beer-Lambert law could discriminate lesions from sound enamel. Lesion depth ranged from 175 to 606 μm in SS-OCT. A correlation between μCT and SS-OCT was found regarding lesion depth (R=0.81, p<0.001) and also surface layer thickness (R=0.76, p<0.005). The images obtained clinically in real time using the dental SS-OCT system are suitable for the assessment of natural subsurface lesions and their surface layer, providing comparable images to a laboratory high-resolution μCT without the use of X-ray.

KW - dentistry

KW - enamel

KW - optical coherence tomography

KW - optical properties

KW - tissue characterization

KW - X-ray imaging

UR - http://www.scopus.com/inward/record.url?scp=84937987866&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84937987866&partnerID=8YFLogxK

U2 - 10.1117/1.JMI.2.1.014001

DO - 10.1117/1.JMI.2.1.014001

M3 - Article

AN - SCOPUS:84937987866

VL - 2

JO - Journal of Medical Imaging

JF - Journal of Medical Imaging

SN - 0720-048X

IS - 1

M1 - 014001

ER -