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Journal of Biomedical Optics • Open Access

Influence of dental resin material composition on cross-polarization-optical coherence tomography imaging
Author(s): Carmen Lammeier; YuPing Li; Scott Lunos; Alex Fok; Joel Rudney; Robert S. Jones

Paper Abstract

The purpose of this study was to investigate cross-polarization-optical coherence tomography (CP-OCT) signal attenuation through different resin material compositions. Four distinct composite systems were used: Filtek supreme ultra (FSU) (3M ESPE), IPS empress direct (EMD) (Ivoclar Vivadent), estelite sigma quick (SQK) (Tokuyama Dental), and Z100 (3M ESPE). Cross-sectional images of different composite-demineralized phantoms (<b<n=108</b< ) were collected using a 1310-nm intraoral cross-polarization swept source OCT (CP-OCT) imaging system. <i<b<<%T</b< quantified the CP-OCT signal attenuation. Scanning electron microscopy, transmission electron microscopy, and energy-dispersive x-ray spectrometer chemical analysis was utilized to determine how different matrix/filler compositions affected attenuation of the near infrared (NIR) signal. CP-OCT imaging of dental resin composites showed enormous variation in signal attenuation. For each of our composite systems, there was not a consistent attenuation difference in the NIR signal for A to D shades. The four composites had similar measured backscattering values but attenuated the overall signal to different degrees. When comparing the A2 shades between the four different composite systems, the order of highest to lowest of <b<%T</b< was <b<EMD</b<<<b<Z100</b< , <b<FSU</b<<<b<SQK </b< (ANOVA, Tukey, <b<p<0.0001 </b<). As a result, we demonstrate the importance of understanding how the constituents of composite materials affect CP-OCT signal attenuation.

Paper Details

Date Published: 1 October 2012
PDF: 10 pages
J. Biomed. Opt. 17(10) 106002 doi: 10.1117/1.JBO.17.10.106002
Published in: Journal of Biomedical Optics Volume 17, Issue 10
Show Author Affiliations
Carmen Lammeier, Univ. of Minnesota, Twin Cities (United States)
YuPing Li, Univ. of Minnesota, Twin Cities (United States)
Scott Lunos, Univ. of Minnesota, Twin Cities (United States)
Alex Fok, Univ. of Minnesota, Twin Cities (United States)
Joel Rudney, Univ. of Minnesota, Twin Cities (United States)
Robert S. Jones, Univ. of Minnesota, Twin Cities (United States)


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