Biomedical Applications in Molecular, Structural, and Functional Imaging

Clinical cross-polarization optical coherence tomography assessment of subsurface enamel below dental resin composite restorations

[+] Author Affiliations
Patricia Lenton

University of Minnesota, School of Dentistry, Department of Diagnostic and Biological Sciences, 7-546 Moos Tower, 515 Delaware Street Southeast, Minneapolis, Minnesota 55455

Joel Rudney

University of Minnesota, School of Dentistry, Department of Diagnostic and Biological Sciences, 7-546 Moos Tower, 515 Delaware Street Southeast, Minneapolis, Minnesota 55455

Alex Fok

University of Minnesota, School of Dentistry, Department of Restorative Sciences, 16-212a Moos Tower, 515 Delaware Street Southeast, Minneapolis, Minnesota 55455

Robert S. Jones

University of Minnesota, School of Dentistry, Department of Developmental and Surgical Sciences, 6-150C Moos Tower, 515 Delaware Street Southeast, Minneapolis, Minnesota 55455

J. Med. Imag. 1(1), 016001 (May 07, 2014). doi:10.1117/1.JMI.1.1.016001
History: Received January 27, 2014; Revised March 26, 2014; Accepted April 15, 2014
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Abstract.  A newly designed intraoral swept source cross-polarization optical coherence tomography (CP-OCT) imaging system was used to examine the integrity of the subsurface enamel below resin composite restorations placed in primary teeth. CP-OCT analysis was performed using images obtained from resin composite restoration in 62 (n=62) pediatric subjects. Clinical examination was performed by a single examiner prior to CP-OCT imaging and analysis. CP-OCT images are presented using a unique combined intensity image, where a false color scale is overlaid on the grayscale intensity image. There was a clear difference in the distribution of the mean-backscattered intensity (mR) between restorations recently placed and those possessing frank cavitation (Student’s t-test, P<0.0001). For mR above 15.49 dB, the sensitivity was 80% and specificity 86%. The Youden index J was 0.8 above 12.3 dB where sensitivity was 100% and specificity was 80%. CP-OCT imaging may be used to confirm the subsurface marginal integrity below resin composite restorations but with careful consideration of limitations of the imaging modality. CP-OCT imaging may be a useful adjunct to clinical visual investigation to confirm that a composite margin has a sound and well-adapted interface.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Patricia Lenton ; Joel Rudney ; Alex Fok and Robert S. Jones
"Clinical cross-polarization optical coherence tomography assessment of subsurface enamel below dental resin composite restorations", J. Med. Imag. 1(1), 016001 (May 07, 2014). ; http://dx.doi.org/10.1117/1.JMI.1.1.016001


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