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Proceedings Paper

Optical Coherence Tomography (OCT) for the evaluation of internal adaptation of class V resin restorations on dentin
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Paper Abstract

Internal adaptation of adhesive restorations affects their longevity. In a clinical setting, the dentists use visual and tactile examination to evaluate marginal adaptation, while radiographs provide somewhat reliable information about adaptation or secondary caries present. For class V restorations located on the vestibular (buccal) surfaces, none of the tools available can provide any information about the internal adaptation or the presence of secondary caries. OCT has been proven to be a useful tool for non-destructive assessment of internal adaptation of adhesive restorations. This paper is evaluating the use of a new high-resolution handheld OCT prototype with a pen-shaped intraoral tip and an imaging depth of 8mm to examine the internal adaptation and the presence of demineralization under resin restorations on the vestibular dentin surface. The Axsun OCT system helped evaluate the internal adaptation of composite restorations, differentiate between healthy and demineralised dentin, adhesive, and restoration layers. OCT provided a unique visualization and characterization of internal structures as well as non-contact assessment of marginal adaptation.

Paper Details

Date Published: 19 February 2020
PDF: 7 pages
Proc. SPIE 11217, Lasers in Dentistry XXVI, 1121706 (19 February 2020); doi: 10.1117/12.2544684
Show Author Affiliations
Marwa Abdelaziz, Univ. Clinic of Dental Medicine (Switzerland)
Univ. of California, San Francisco (United States)
Andrés F. Zuluaga, AXSUN Technologies Inc. (United States)
Francisco Betancourt, Univ. Clinic of Dental Medicine (Switzerland)
Daniel Fried, Univ. of California, San Francisco (United States)
Ivo Krejci, Univ. Clinic of Dental Medicine (Switzerland)
Tissiana Bortolotto, Univ. Clinic of Dental Medicine (Switzerland)

Published in SPIE Proceedings Vol. 11217:
Lasers in Dentistry XXVI
Peter Rechmann; Daniel Fried, Editor(s)

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