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Assessing abrasion of orthodontic surface sealants using a modified ophthalmic optical coherence tomography device

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Abstract

Objective

Optical coherence tomography (OCT) is a clinical standard in ophthalmology. Currently, its application in dentistry is gaining increasing interest. In this study, we tested the possibility to use a modified commercially available spectral domain OCT (SD-OCT) to assess the layer thickness of orthodontic surface sealants.

Materials and methods

Reference samples of surface sealants for calibration and repeatability testing were measured using a micrometer screw. SD-OCT measurements were compared with micro-CT and light microscopic analyses. After validating the calibration of the SD-OCT, surface sealant layer thickness after aging (thermo cycling) and simulation of professional tooth cleaning (PTC) was assessed using the SD-OCT on 45 extracted teeth assigned to three test groups (n = 15 each): Light Bond™ Sealant, Pro Seal®, and Opal® Seal.

Results

SD-OCT showed excellent repeatability and accuracy for measurements of surface sealant layer thickness. Compared with micro-CT, SD-OCT showed better accordance with the reference measurements. The analysis of surface sealants after thermo cycling and PTC revealed poor resistance of Light Bond after only aging and demonstrated substantial wear of all sealants after aging and PTC.

Conclusion

Imaging using commercially available ophthalmic SD-OCT might represent a suitable non-invasive methodology for longitudinal assessments of surface sealant layer thickness in vitro and in vivo.

Clinical relevance

SD-OCT might be a suitable non-invasive method for longitudinal assessments of surface sealant durability in clinical trials.

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Acknowledgments

This manuscript is dedicated to the memory of Dr. Gerhard Zinser, who passed away on 19 November 2017.

The authors thank Ali Tafreshi, Joerg Fischer, Dr. Julian Weichsel, Dr. Stefan Schmidt, Ege Ilicak, and Dr. Gerhard Zinser (Heidelberg Engineering, Heidelberg, Germany) for providing OCT equipment and software.

Funding

The study was supported by a grant from the “physician scientist fellowship” to S. S. of the Medical Faculty of Heidelberg.

Author information

Authors and Affiliations

  1. Department of Orthodontics and Dentofacial Orthopaedics, University of Heidelberg, Heidelberg, Germany

    Sinan Şen, Ralf Erber, Gül Orhan, Christopher J. Lux & Sebastian Zingler

  2. Institute of Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany

    Kevin Kunzmann

  3. Department of Neuroradiology, University Medical Center of the Johannes Gutenberg-University, Mainz, Germany

    Stefanie Kirschner & Marc A. Brockmann

  4. Department of Neuroradiology, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany

    Stefanie Kirschner & Vanessa Weyer

  5. Division of Neurosurgical Research, Medical Faculty Mannheim, University of Heidelberg, 68167, Mannheim, Germany

    Lothar Schilling

  6. Department of Prosthodontics, Dental School, University of Heidelberg, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany

    Stefan Rues

Authors
  1. Sinan Şen
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  2. Ralf Erber
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  3. Kevin Kunzmann
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  4. Stefanie Kirschner
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  5. Vanessa Weyer
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  6. Lothar Schilling
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  7. Marc A. Brockmann
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  8. Stefan Rues
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  9. Gül Orhan
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  10. Christopher J. Lux
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  11. Sebastian Zingler
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Corresponding author

Correspondence to Sinan Şen.

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Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

The study protocol was approved by the ethics committee of the Medical Faculty of Heidelberg University (approval no. S-301/2011). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Şen, S., Erber, R., Kunzmann, K. et al. Assessing abrasion of orthodontic surface sealants using a modified ophthalmic optical coherence tomography device. Clin Oral Invest 22, 3143–3157 (2018). https://doi.org/10.1007/s00784-018-2410-5

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  • DOI: https://doi.org/10.1007/s00784-018-2410-5

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