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Root canal filling evaluation using optical coherence tomography

Negrutiu, Meda and Sinescu, Cosmin and Topala, Florin and Nica, Luminita and Ionita, Ciprian and Marcauteanu, Corina and Goguta, Luciana and Bradu, Adrian and Dobre, George and Rominu, Mihai and Podoleanu, Adrian Gh. (2010) Root canal filling evaluation using optical coherence tomography. In: Biophotonics: Photonic Solutions for Better Health Care II. Proceedings of SPIE . SPIE. ISBN 978-0-8194-8188-7. (doi:10.1117/12.854842) (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)

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://dx.doi.org/10.1117/12.854842

Abstract

Endodontic therapy consists in cleaning and shaping the root canal system, removing organic debris and sealing the intra-canal space with permanent filling materials. The purpose of this study was to evaluate various root canal fillings in order to detect material defects, the marginal adaptation at the root canal walls and to assess the quality of the apical sealing. 21 extracted single-root canal human teeth were selected for this study. We instrumented all roots using NiTi rotary instruments. All canals were enlarged with a 6% taper size 30 GT instrument, 0,5 mm from the anatomical apex. The root canals were irrigated with 5% sodium hypochlorite, followed by 17% ethylenediaminetetraacetic acid (EDTA). After the instrumentation was completed, the root canals were obturated using a thermoplasticizable polymer of polyesters. In order to assess the defects inside the filling material and the marginal fit to the root canal walls, the conebeam micro-computed tomography (CBμCT) was used first. After the CBμCT investigation, time domain optical coherence tomography working in en face mode (TDefOCT) was employed to evaluate the previous samples. The TDefOCT system was working at 1300 nm and was doubled by a confocal channel at 970 nm. The results obtained by CBμCT revealed no visible defects inside the root-canal fillings and at the interfaces with the root-canal walls. TDefOCT investigations permit to visualize a more complex stratificated structure at the interface filling material/dental hard tissue and in the apical region.

Item Type: Book section
DOI/Identification number: 10.1117/12.854842
Uncontrolled keywords: Apical sealing, En face optical coherence tomography, Microleakage, Root canal filling evaluation, Apical sealing, Canal walls, Cone beam, Ethylenediaminetetraacetic acid, Filling materials, Hard tissues, Human teeths, Marginal adaptation, Marginal fit, Material defect, Microcomputed tomography, Microleakage, Optical coherence Tomography, Organic debris, Root canal filling, Root canal system, Root canal walls, Root canals, Sodium hypochlorites, Time domain optical coherence tomography, Canals, Defects, Filling, Health care, Hydraulic structures, Rating, Sodium, Space debris, Walls (structural partitions), Computerized tomography
Subjects: Q Science > QC Physics
R Medicine > R Medicine (General) > R857.O6 Optical coherence tomography
R Medicine > RK Dentistry
Divisions: Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User: Giles Tarver
Date Deposited: 16 Jul 2015 14:28 UTC
Last Modified: 01 Aug 2019 10:39 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49426 (The current URI for this page, for reference purposes)
Dobre, George: https://orcid.org/0000-0002-5695-2591
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