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

Patricia A Lenton, Joel D Rudney, Alex Fok, Robert S Jones

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

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.

Original languageEnglish (US)
Article number016001
JournalJournal of Medical Imaging
Volume1
Issue number1
DOIs
StatePublished - Apr 1 2014

Keywords

  • Optical coherence tomography
  • biomaterials
  • dentistry
  • polarization

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