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Proceedings Paper

MicroCT and optical coherence tomography imagistic assessment of the dental roots adhesive
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Paper Abstract

Several obturation methods are available today to study the 3D filling of the root canal. There are also several methods capable to evaluate the ability to seal apically the root canals. However, the common methods of investigation are invasive; they also lead to the destruction of the samples. If the sectioning differs slightly from the desired area, the investigation is non-conclusive regarding the micro-leakages. Also, although the use of Cone-Beam Micro Computer Tomography (CBCT) appears to be most promising for endodontic purposes, its effective radiation doses are higher than with conventional intra-oral and panoramic imaging. In contrast, enface (ef) Optical Coherence Tomography (OCT) proves to be efficient for the investigation of material defects of dental restorations, dental materials, and micro-leakage at the interfaces, where the penetration depth depends on the material. Therefore, ef OCT has been proposed in our studies as a potential tool for in vivo endodontic imaging. Twenty five recently extracted human maxillary molars were selected for the study for caries or periodontal reasons. The pulp chambers were completely opened, the dental pulp was removed, and the root canals were shaped. Silver nanoparticles were used in half of the samples in order to increase the scattering of the adhesive material in comparison with the dental roots walls. The sample teeth were then probed using Time Domain (TD) OCT working at 1300 nm. A synchrotron radiation X-Ray microCT experiment was also performed. The imagistic results pointed out the efficiency of the silver nanoparticle layer used in order to increase the scattering of the root canal adhesive scattering for the OCT non-invasive investigation. MicroCT allowed for obtaining qualitative data related to the depth penetration of the root canal adhesive into the dentin walls.

Paper Details

Date Published: 19 March 2015
PDF: 8 pages
Proc. SPIE 9417, Medical Imaging 2015: Biomedical Applications in Molecular, Structural, and Functional Imaging, 94170U (19 March 2015); doi: 10.1117/12.2082470
Show Author Affiliations
Cosmin Sinescu, Univ. of Medicine and Pharmacy Victor Babes Timisoara (Romania)
Meda Lavinia Negrutiu, Univ. of Medicine and Pharmacy Victor Babes Timisoara (Romania)
Luminita Nica, Univ. of Medicine and Pharmacy Victor Babes Timisoara (Romania)
Adrian Manescu, Univ. Politecnica delle Marche (Italy)
Virgil-Florin Duma, Aurel Vlaicu Univ. of Arad (Romania)
Politehnica Univ. of Timisoara (Romania)
Univ. of West Timisoara (Romania)
Adrian Gh. Podoleanu, Univ. of Kent (United Kingdom)


Published in SPIE Proceedings Vol. 9417:
Medical Imaging 2015: Biomedical Applications in Molecular, Structural, and Functional Imaging
Barjor Gimi; Robert C. Molthen, Editor(s)

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