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BioMed Research International
Volume 2015 (2015), Article ID 164065, 7 pages
Research Article

Dentin Morphology of Root Canal Surface: A Quantitative Evaluation Based on a Scanning Electronic Microscopy Study

1Department of Medical-Surgery and Odontostomatologic Experimental Sciences, University of Messina, Italy
2Department of Biomedical Sciences and Morpho-Functional Imaging, University of Messina, Italy
3IRCCS Centro Neurolesi “Bonino-Pulejo”, Messina, Italy
4IPCF-CNR Viale Stagno D’Alcontres, 98100 Messina, Italy
5Department of Human Pathology, University of Messina, Via Consolare Valeria, 98100 Messina, Italy

Received 14 February 2015; Revised 25 March 2015; Accepted 13 April 2015

Academic Editor: Levent Sarikcioglu

Copyright © 2015 Giuseppe Lo Giudice et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Dentin is a vital, hydrated composite tissue with structural components and properties that vary in the different topographic portions of the teeth. These variations have a significant implication for biomechanical teeth properties and for the adhesive systems utilized in conservative dentistry. The aim of this study is to analyse the root canal dentin going from coronal to apical zone to find the ratio between the intertubular dentin area and the surface occupied by dentin tubules varies. Observations were conducted on 30 healthy premolar teeth extracted for orthodontic reasons in patients aged between 10 and 14. A SEM analysis of the data obtained in different canal portions showed that, in the coronal zone, dentinal tubules had a greater diameter (4.32 μm) than the middle zone (3.74 μm) and the apical zone (1.73 μm). The average number of dentinal tubules (in an area of 1 mm2) was similar in coronal zone () and apical zone (), while in the middle zone they were lower in number (). However, intertubular dentin area was bigger going from apical to coronal portion. The differences between the analysed areas must be considered for the choice of the adhesive system.