title: Dentin Morphology of Root Canal Surface: A Quantitative Evaluation Based on a Scanning Electronic Microscopy Study.
abstract: 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 mm(2)) was similar in coronal zone (46,798 ± 10,644) and apical zone (45,192 ± 10,888), while in the middle zone they were lower in number (30,940 ± 7,651). 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.
authors.affiliation: Department of Medical-Surgery and Odontostomatologic Experimental Sciences, University of Messina, Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Lo Giudice
authors.affiliation: Department of Biomedical Sciences and Morpho-Functional Imaging, University of Messina, Italy ; IRCCS Centro Neurolesi "Bonino-Pulejo", Messina, Italy.
authors.forename: Giuseppina
authors.initials: G
authors.lastname: Cutroneo
authors.affiliation: Department of Biomedical Sciences and Morpho-Functional Imaging, University of Messina, Italy ; IRCCS Centro Neurolesi "Bonino-Pulejo", Messina, Italy.
authors.forename: Antonio
authors.initials: A
authors.lastname: Centofanti
authors.affiliation: Department of Medical-Surgery and Odontostomatologic Experimental Sciences, University of Messina, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Artemisia
authors.affiliation: Department of Medical-Surgery and Odontostomatologic Experimental Sciences, University of Messina, Italy.
authors.forename: Ennio
authors.initials: E
authors.lastname: Bramanti
authors.affiliation: Department of Medical-Surgery and Odontostomatologic Experimental Sciences, University of Messina, Italy.
authors.forename: Angela
authors.initials: A
authors.lastname: Militi
authors.affiliation: Department of Biomedical Sciences and Morpho-Functional Imaging, University of Messina, Italy ; IRCCS Centro Neurolesi "Bonino-Pulejo", Messina, Italy.
authors.forename: Giuseppina
authors.initials: G
authors.lastname: Rizzo
authors.affiliation: Department of Biomedical Sciences and Morpho-Functional Imaging, University of Messina, Italy ; IRCCS Centro Neurolesi "Bonino-Pulejo", Messina, Italy.
authors.forename: Angelo
authors.initials: A
authors.lastname: Favaloro
authors.affiliation: IPCF-CNR Viale Stagno D'Alcontres, 98100 Messina, Italy.
authors.forename: Alessia
authors.initials: A
authors.lastname: Irrera
authors.affiliation: Department of Medical-Surgery and Odontostomatologic Experimental Sciences, University of Messina, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: Lo Giudice
authors.affiliation: Department of Human Pathology, University of Messina, Via Consolare Valeria, 98100 Messina, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Cicciù
mesh_terms: D000293:Adolescent; D001641:Bicuspid / Q000737:chemistry / Q000648:ultrastructure; D002648:Child; D003804:Dentin / Q000737:chemistry / Q000648:ultrastructure*; D006801:Humans; D008855:Microscopy, Electron, Scanning / Q000379:methods*; D010784:Photomicrography; D014092:Tooth Root / Q000737:chemistry / Q000648:ultrastructure*