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 language | English |
|---|---|
| Article number | 014001 |
| Journal | Journal of Medical Imaging |
| Volume | 2 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1 2015 |
| Externally published | Yes |
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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 journal › Article
}
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 -