Abstract
Frequency-domain photothermal radiometry (FD-PTR or PTR) is used to detect mechanical holes and demineralized enamel in the interproximal contact area of extracted human teeth. Thirty-four teeth are used in a series of experiments. Preliminary tests to detect mechanical holes created by dental burs and 37% phosphoric acid etching for 20 s on the interproximal contact points show distinct differences in the signal. Interproximal contact areas are demineral-ized by using a partially saturated acidic buffer system. Each sample pair is examined with PTR before and after micromachining or treating at sequential treatment periods spanning 6h to 30 days. Dental bitewing radiographs showed no sign of demineralized lesion even for samples treated for 30 days. Microcomputer tomography (μ-CT), transverse microradiography (TMR), and scanning electron microscopy (SEM) analyses are performed. Although μ-CT and TMR measured mineral losses and lesion depths, only SEM surface images showed visible signs of treatment because of the minimal extent of the demineralization. However, the PTR amplitude increased by more than 300% after 80 h of treatment. Therefore, PTR is shown to have sufficient contrast for the detection of very early interproximal demineralized lesions. The technique further exhibits excellent signal re-producibility and consistent signal changes in the presence of inter-proximal demineralized lesions, attributes that could lead to PTR as a reliable probe to detect early interproximal demineralization lesions. Modulated luminescence is also measured simultaneously, but it shows a lower ability than PTR to detect these interproximal demineralized lesions.
| Original language | English (US) |
|---|---|
| Article number | 034028 |
| Journal | Journal of Biomedical Optics |
| Volume | 12 |
| Issue number | 3 |
| DOIs | |
| State | Published - May 2007 |
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Keywords
- Dental photothermal radiometry
- Detection of demineralized dental lesions
- Interproxi-mal dental caries detection
- Modulated luminescence
ASJC Scopus subject areas
- Biomedical Engineering
- Biomaterials
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Radiology Nuclear Medicine and imaging
- Radiological and Ultrasound Technology
- Clinical Biochemistry
Cite this
Detection of interproximal demineralized lesions on human teeth in vitro using frequency-domain infrared photothermal radiometry and modulated luminescence. / Jeon, Raymond J.; Matvienko, Anna; Mandelis, Andreas; Abrams, Stephen H.; Amaechi, Bennett T; Kulkarni, Gajanan.
In: Journal of Biomedical Optics, Vol. 12, No. 3, 034028, 05.2007.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Detection of interproximal demineralized lesions on human teeth in vitro using frequency-domain infrared photothermal radiometry and modulated luminescence
AU - Jeon, Raymond J.
AU - Matvienko, Anna
AU - Mandelis, Andreas
AU - Abrams, Stephen H.
AU - Amaechi, Bennett T
AU - Kulkarni, Gajanan
PY - 2007/5
Y1 - 2007/5
N2 - Frequency-domain photothermal radiometry (FD-PTR or PTR) is used to detect mechanical holes and demineralized enamel in the interproximal contact area of extracted human teeth. Thirty-four teeth are used in a series of experiments. Preliminary tests to detect mechanical holes created by dental burs and 37% phosphoric acid etching for 20 s on the interproximal contact points show distinct differences in the signal. Interproximal contact areas are demineral-ized by using a partially saturated acidic buffer system. Each sample pair is examined with PTR before and after micromachining or treating at sequential treatment periods spanning 6h to 30 days. Dental bitewing radiographs showed no sign of demineralized lesion even for samples treated for 30 days. Microcomputer tomography (μ-CT), transverse microradiography (TMR), and scanning electron microscopy (SEM) analyses are performed. Although μ-CT and TMR measured mineral losses and lesion depths, only SEM surface images showed visible signs of treatment because of the minimal extent of the demineralization. However, the PTR amplitude increased by more than 300% after 80 h of treatment. Therefore, PTR is shown to have sufficient contrast for the detection of very early interproximal demineralized lesions. The technique further exhibits excellent signal re-producibility and consistent signal changes in the presence of inter-proximal demineralized lesions, attributes that could lead to PTR as a reliable probe to detect early interproximal demineralization lesions. Modulated luminescence is also measured simultaneously, but it shows a lower ability than PTR to detect these interproximal demineralized lesions.
AB - Frequency-domain photothermal radiometry (FD-PTR or PTR) is used to detect mechanical holes and demineralized enamel in the interproximal contact area of extracted human teeth. Thirty-four teeth are used in a series of experiments. Preliminary tests to detect mechanical holes created by dental burs and 37% phosphoric acid etching for 20 s on the interproximal contact points show distinct differences in the signal. Interproximal contact areas are demineral-ized by using a partially saturated acidic buffer system. Each sample pair is examined with PTR before and after micromachining or treating at sequential treatment periods spanning 6h to 30 days. Dental bitewing radiographs showed no sign of demineralized lesion even for samples treated for 30 days. Microcomputer tomography (μ-CT), transverse microradiography (TMR), and scanning electron microscopy (SEM) analyses are performed. Although μ-CT and TMR measured mineral losses and lesion depths, only SEM surface images showed visible signs of treatment because of the minimal extent of the demineralization. However, the PTR amplitude increased by more than 300% after 80 h of treatment. Therefore, PTR is shown to have sufficient contrast for the detection of very early interproximal demineralized lesions. The technique further exhibits excellent signal re-producibility and consistent signal changes in the presence of inter-proximal demineralized lesions, attributes that could lead to PTR as a reliable probe to detect early interproximal demineralization lesions. Modulated luminescence is also measured simultaneously, but it shows a lower ability than PTR to detect these interproximal demineralized lesions.
KW - Dental photothermal radiometry
KW - Detection of demineralized dental lesions
KW - Interproxi-mal dental caries detection
KW - Modulated luminescence
UR - http://www.scopus.com/inward/record.url?scp=34547917911&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34547917911&partnerID=8YFLogxK
U2 - 10.1117/1.2750289
DO - 10.1117/1.2750289
M3 - Article
C2 - 17614736
AN - SCOPUS:34547917911
VL - 12
JO - Journal of Biomedical Optics
JF - Journal of Biomedical Optics
SN - 1083-3668
IS - 3
M1 - 034028
ER -