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Proceedings Paper

SEM and microCT validation for en face OCT imagistic evaluation of endodontically treated human teeth
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Paper Abstract

Successful root canal treatment is based on diagnosis, treatment planning, knowledge of tooth anatomy, endodontic access cavity design, controlling the infection by thorough cleaning and shaping, methods and materials used in root canal obturation. An endodontic obturation must be a complete, three-dimensional filling of the root canal system, as close as possible to cemento-dentinal junction, without massive overfilling or underfilling. There are several known methods which are used to assess the quality of the endodontic sealing, but most are invasive. These lead to the destruction of the samples and often no conclusion could be drawn in respect to the existence of any microleakage in the investigated areas of interest. Using an time domain en-face OCT system, we have recently demonstrated real time thorough evaluation of quality of root canal fillings. The purpose of this in vitro study was to validate the en face OCT imagistic evaluation of endodontically treated human teeth by using scanning electron microscopy (SEM) and microcomputer tomography (μCT). SEM investigations evidenced the nonlinear aspect of the interface between the endodontic filling material and the root canal walls and materials defects in some samples. The results obtained by μCT revealed also some defects inside the root-canal filling and at the interfaces between the material and the root canal walls. The advantages of the OCT method consist in non-invasiveness and high resolution. In addition, en face OCT investigations permit visualization of the more complex stratified structure at the interface between the filling material and the dental hard tissue.

Paper Details

Date Published: 17 March 2011
PDF: 6 pages
Proc. SPIE 7961, Medical Imaging 2011: Physics of Medical Imaging, 79614W (17 March 2011); doi: 10.1117/12.878320
Show Author Affiliations
Meda L. Negrutiu, Univ. of Medicine and Pharmacy Victor Babes (Romania)
Luminita Nica, Univ. of Medicine and Pharmacy Victor Babes (Romania)
Cosmin Sinescu, Univ. of Medicine and Pharmacy Victor Babes (Romania)
Florin Topala, Univ. of Medicine and Pharmacy Victor Babes (Romania)
Ciprian Ionita, Univ. at Buffalo (United States)
Adrian Bradu, Univ. of Kent (United Kingdom)
Emanuela L. Petrescu, Univ. of Medicine and Pharmacy Victor Babes (Romania)
Daniela M. Pop, Univ. of Medicine and Pharmacy Victor Babes (Romania)
Mihai Rominu, Univ. of Medicine and Pharmacy Victor Babes (Romania)
Adrian Gh. Podoleanu, Univ. of Kent (United Kingdom)


Published in SPIE Proceedings Vol. 7961:
Medical Imaging 2011: Physics of Medical Imaging
Norbert J. Pelc; Ehsan Samei; Robert M. Nishikawa, Editor(s)

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