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Evaluation of Tizian overlays by means of a swept source optical coherence tomography system

Marcauteanu, Corina and Sinescu, Cosmin and Negrutiu, Meda Lavinia and Stoica, Eniko Tunde and Topala, Florin and Duma, Virgil Florin and Bradu, Adrian and Podoleanu, Adrian Gh. (2016) Evaluation of Tizian overlays by means of a swept source optical coherence tomography system. In: Todea, Carmen C. and Podoleanu, Adrian G.H. and Duma, Virgil-Florin, eds. Sixth International Conference on Lasers in Medicine. Proceedings of SPIE, 16 (62). SPIE, Bellingham, Washington, 96700X. ISBN 978-1-62841-893-4. (doi:10.1117/12.2191905) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:60078)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://doi.org/10.1117/12.2191905

Abstract

The teeth affected by pathologic attrition can be restored by a minimally invasive approach, using Tizian overlays. In this study we prove the advantages of a fast swept source (SS) OCT system in the evaluation of Tizian overlays placed in an environment characterized by high occlusal forces. 12 maxillary first premolars were extracted and prepared for overlays. The Tizian overlays were subjected to 3000 alternating cycles of thermo-cycling (from -10°C to +50°C) and to mechanical occlusal overloads (at 800 N). A fast SS OCT system was used to evaluate the Tizian overlays before and after the mechanical and thermal straining. The SS (Axsun Technologies, Billerica, MA) has a central wavelength of 1060 nm, sweeping range of 106 nm (quoted at 10 dB) and a 100 kHz line rate. The depth resolution of the system, measured experimentally in air was 10 ?m. The imaging system used for this study offers high spatial resolutions in both directions, transversal and longitudinal of around 10 ?m, a high sensitivity, and it is also able to acquire entire tridimensional (3D)/volume reconstructions as fast as 2.5 s. Once the full dataset was acquired, rendered high resolutions en-face projections could be produced. Using them, the overlay (i.e., cement) abutment tooth interfaces were remarked both on B-scans/two-dimensional (2D) sections and in the 3D reconstructions. Using the system several open interfaces were possible to detect. The fast SS OCT system thus proves useful in the evaluation of zirconia reinforced composite overlays, placed in an environment characterized by high occlusal forces. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Item Type: Book section
DOI/Identification number: 10.1117/12.2191905
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: Matthias Werner
Date Deposited: 25 Jan 2017 15:12 UTC
Last Modified: 26 Jan 2020 04:09 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/60078 (The current URI for this page, for reference purposes)
Bradu, Adrian: https://orcid.org/0000-0002-6890-1599
Podoleanu, Adrian Gh.: https://orcid.org/0000-0002-4899-9656
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