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In this paper, the fatigue and fracture properties of bovine dentin are evaluated using in vitro experimental analyses. Double cantilever beam (DCB) specimens were prepared from bovine maxillary molars and subjected to zero-to-tension cyclic loads. The fatigue crack growth rate was evaluated as a function of the dentin tubule orientation using the Paris law. Wedge-loaded DCB specimens were also prepared and subjected to monotonic opening loads. Moiré interferometry was used to acquire the in-plane displacement field during stable crack growth, and the instantaneous wedge load and crack length were acquired to evaluate the crack growth resistance and crack tip opening displacement (CTOD) with crack extension. The rate of fatigue crack growth was generally larger for crack propagation occurring perpendicular to the dentin tubules. The Moiré fringe fields documented during monotonic crack growth exhibited non-linear deformation occurring within a confined region adjacent to the crack tip. Both the wedge load and CTOD response provided evidence that a fracture process zone contributes to energy dissipation during crack extension and that dentin exhibits a rising R-curve behavior. Results from this preliminary investigation are being used as a guide for an evaluation of the fatigue and fracture properties of human dentin.

Titel:	Fatigue and fracture of bovine dentin : Special issue in biological and biologically inspired materals
Autor/in / Beteiligte Person:	AROLA, D ; ROULAND, J. A ; ZHANG, D
Link:	Volltext (PDF) View record from PASCAL Archive
Zeitschrift:	Experimental mechanics, Jg. 42 (2002), Heft 4, S. 380-388
Veröffentlichung:	Heidelberg: Springer, 2002
Medientyp:	academicJournal
Umfang:	print, 33 ref
ISSN:	0014-4851 (print)
Schlagwort:	Mechanics acoustics Mécanique et acoustique Sciences exactes et technologie Exact sciences and technology Physique Physics Etat condense: structure, proprietes mecaniques et thermiques Condensed matter: structure, mechanical and thermal properties Propriétés mécaniques et acoustiques de l'état condensé Mechanical and acoustical properties of condensed matter Propriétés mécaniques des solides Mechanical properties of solids Fatigue, fragilisation, rupture et fissures Fatigue, brittleness, fracture, and cracks Sciences biologiques et medicales Biological and medical sciences Sciences biologiques fondamentales et appliquees. Psychologie Fundamental and applied biological sciences. Psychology Biophysique des tissus, organes et organismes Tissues, organs and organisms biophysics Biomécanique. Biorhéologie Biomechanics. Biorheology Vertebres: systeme digestif Vertebrates: digestive system Cavité buccale. Glandes salivaires, exocrines et endocrines. Dents. Oesophage Mouth. Exocrine and endocrine salivary glands. Teeth. Esophagus Biomécanique Biomechanics Biomecánica Dent Tooth Diente Etude expérimentale Experimental study Estudio experimental Fissure fatigue Fatigue crack Fisura fatiga Homme Human Hombre Interférométrie optique Optical interferometry Interferometría óptica Méthode moiré Moire method Método muaré Propagation fissure Crack propagation Propagación fisura Rupture fatigue Fatigue fracture Rotura fatiga Résistance propagation fissure Crack propagation resistance Resistencia propagación grieta Dentin Moiré interferometry fatigue fracture process zone teeth
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Article File Description: text Language: English Author Affiliations: Department of Mechanical Engineering, University of Maryland Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250, United States ; Department of Astronautical Technology, National University of Defense Technology, Changsha 410073, China Rights: Copyright 2003 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Biophysics of tissues, organs and organisms ; Physics of condensed state: structure, mechanical and thermal properties ; Vertebrates : digestive and urinary system

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Fatigue and fracture of bovine dentin : Special issue in biological and biologically inspired materals