Optical coherence tomography for evaluation of enamel and protective coatings

Ehab Z. Alsayed, Ilnaz Hariri, Alireza Sadr, Syozi Nakashima, Turki A. Bakhsh, Yasushi Shimada, Yasunori Sumi, Junji Tagami

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Optical coherence tomography (OCT) is an interferometric imaging technique. This study aimed to employ OCT to evaluate four different resin-based materials including a coating containing glass-ionomer filler and calcium, a giomer, and two fluoride-releasing self-etch resins. The coating and its underlying and adjacent enamel were monitored using swept-source OCT (center wavelength: 1330 nm) at baseline, after 5,000 thermal cycles, and after 1, 4 and 7 days of demineralization (pH 4.5). The coatings showed different thicknesses (60–250 micrometers) and various levels of structural and interfacial integrity. OCT could detect a demineralization inhibition zone adjacent to the edge of the fluoride- and calcium-releasing material. Localized demineralization was occasionally observed under thinner coatings. Protection of susceptible enamel surfaces by thin resin-based bioactive coatings provides protection from demineralization. OCT can be used to non-destructively monitor the integrity of such coatings, as well as enamel changes beneath and adjacent to them.

Original languageEnglish
Pages (from-to)98-107
Number of pages10
JournalDental Materials Journal
Volume34
Issue number1
DOIs
Publication statusPublished - 2015
Externally publishedYes

Fingerprint

Enamels
Optical tomography
Optical Coherence Tomography
Protective coatings
Dental Enamel
Coatings
Resins
Calcium Fluoride
Calcium
Fluorides
Ionomers
Hot Temperature
Fillers
Imaging techniques
Glass
Wavelength

Keywords

  • Demineralization
  • Enamel
  • Optical coherence tomography
  • Resin coating

ASJC Scopus subject areas

  • Ceramics and Composites
  • Dentistry(all)

Cite this

Alsayed, E. Z., Hariri, I., Sadr, A., Nakashima, S., Bakhsh, T. A., Shimada, Y., ... Tagami, J. (2015). Optical coherence tomography for evaluation of enamel and protective coatings. Dental Materials Journal, 34(1), 98-107. https://doi.org/10.4012/dmj.2014-215

Optical coherence tomography for evaluation of enamel and protective coatings. / Alsayed, Ehab Z.; Hariri, Ilnaz; Sadr, Alireza; Nakashima, Syozi; Bakhsh, Turki A.; Shimada, Yasushi; Sumi, Yasunori; Tagami, Junji.

In: Dental Materials Journal, Vol. 34, No. 1, 2015, p. 98-107.

Research output: Contribution to journalArticle

Alsayed, EZ, Hariri, I, Sadr, A, Nakashima, S, Bakhsh, TA, Shimada, Y, Sumi, Y & Tagami, J 2015, 'Optical coherence tomography for evaluation of enamel and protective coatings', Dental Materials Journal, vol. 34, no. 1, pp. 98-107. https://doi.org/10.4012/dmj.2014-215
Alsayed, Ehab Z. ; Hariri, Ilnaz ; Sadr, Alireza ; Nakashima, Syozi ; Bakhsh, Turki A. ; Shimada, Yasushi ; Sumi, Yasunori ; Tagami, Junji. / Optical coherence tomography for evaluation of enamel and protective coatings. In: Dental Materials Journal. 2015 ; Vol. 34, No. 1. pp. 98-107.
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