Swept source optical coherence tomography for quantitative and qualitative assessment of dental composite restorations

Alireza Sadr, Yasushi Shimada, Juan Ricardo Mayoral, Ilnaz Hariri, Turki A. Bakhsh, Yasunori Sumi, Junji Tagami

Research output: Chapter in Book/Report/Conference proceedingConference contribution

22 Citations (Scopus)

Abstract

The aim of this work was to explore the utility of swept-source optical coherence tomography (SS-OCT) for quantitative evaluation of dental composite restorations. The system (Santec, Japan) with a center wavelength of around 1300 nm and axial resolution of 12 μm was used to record data during and after placement of light-cured composites. The Fresnel phenomenon at the interfacial defects resulted in brighter areas indicating gaps as small as a few micrometers. The gap extension at the interface was quantified and compared to the observation by confocal laser scanning microscope after trimming the specimen to the same cross-section. Also, video imaging of the composite during polymerization could provide information about real-time kinetics of contraction stress and resulting gaps, distinguishing them from those gaps resulting from poor adaptation of composite to the cavity prior to polymerization. Some samples were also subjected to a high resolution microfocus X-ray computed tomography (μCT) assessment; it was found that differentiation of smaller gaps from the radiolucent bonding layer was difficult with 3D μCT. Finally, a clinical imaging example using a newly developed dental SS-OCT system with an intra-oral scanning probe (Panasonic Healthcare, Japan) is presented. SS-OCT is a unique tool for clinical assessment and laboratory research on resin-based dental restorations. Supported by GCOE at TMDU and NCGG.

Original languageEnglish
Title of host publicationLasers in Dentistry XVII
Volume7884
DOIs
Publication statusPublished - 2011
Externally publishedYes
EventLasers in Dentistry XVII - San Francisco, CA, United States
Duration: Jan 23 2011Jan 23 2011

Other

OtherLasers in Dentistry XVII
CountryUnited States
CitySan Francisco, CA
Period1/23/111/23/11

Fingerprint

Dental composites
Optical tomography
Optical Coherence Tomography
restoration
Restoration
Tooth
tomography
Polymerization
composite materials
Tomography
Japan
Composite materials
Synthetic Resins
Scanning
X Ray Computed Tomography
Trimming
Medical imaging
Research laboratories
polymerization
Lasers

Keywords

  • Dental composite
  • Interface
  • SS-OCT
  • Tooth

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

Cite this

Sadr, A., Shimada, Y., Mayoral, J. R., Hariri, I., Bakhsh, T. A., Sumi, Y., & Tagami, J. (2011). Swept source optical coherence tomography for quantitative and qualitative assessment of dental composite restorations. In Lasers in Dentistry XVII (Vol. 7884). [78840C] https://doi.org/10.1117/12.877351

Swept source optical coherence tomography for quantitative and qualitative assessment of dental composite restorations. / Sadr, Alireza; Shimada, Yasushi; Mayoral, Juan Ricardo; Hariri, Ilnaz; Bakhsh, Turki A.; Sumi, Yasunori; Tagami, Junji.

Lasers in Dentistry XVII. Vol. 7884 2011. 78840C.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sadr, A, Shimada, Y, Mayoral, JR, Hariri, I, Bakhsh, TA, Sumi, Y & Tagami, J 2011, Swept source optical coherence tomography for quantitative and qualitative assessment of dental composite restorations. in Lasers in Dentistry XVII. vol. 7884, 78840C, Lasers in Dentistry XVII, San Francisco, CA, United States, 1/23/11. https://doi.org/10.1117/12.877351
Sadr A, Shimada Y, Mayoral JR, Hariri I, Bakhsh TA, Sumi Y et al. Swept source optical coherence tomography for quantitative and qualitative assessment of dental composite restorations. In Lasers in Dentistry XVII. Vol. 7884. 2011. 78840C https://doi.org/10.1117/12.877351
Sadr, Alireza ; Shimada, Yasushi ; Mayoral, Juan Ricardo ; Hariri, Ilnaz ; Bakhsh, Turki A. ; Sumi, Yasunori ; Tagami, Junji. / Swept source optical coherence tomography for quantitative and qualitative assessment of dental composite restorations. Lasers in Dentistry XVII. Vol. 7884 2011.
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