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TECHNICAL PAPERS

Contact Damage of Dental Multilayers: Viscous Deformation and Fatigue Mechanisms

[+] Author and Article Information
M. Huang, X. Niu, W. O. Soboyejo

The Princeton Materials Institute and The Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544

P. Shrotriya

Department of Mechanical Engineering, Iowa State University, Ames, IA 50011

V. Thompson, D. Rekow

College of Dentistry, New York University, New York, NY 10011

J. Eng. Mater. Technol 127(1), 33-39 (Feb 22, 2005) (7 pages) doi:10.1115/1.1836769 History: Received January 01, 2003; Revised September 14, 2004; Online February 22, 2005
Copyright © 2005 by ASME
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References

Figures

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The crack in the crown from the interface of the adhesive after 5 years service
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Schematic of test set-up. (a) Hertzian indentation, and (b) pure compression.
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Displacement-time curves obtained under cyclic loading
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Changes in compliance and subsurface cracking modes
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Plots of displacement versus time. (a) Trilayer, and (b) ceramic-filled foundation
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Spring and dashpot model
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Displacement versus time for 120 N of static loading of trilayer structure under Hertzian indentation
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Maximum principal stress distribution in the trilayer structure
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Maximum principal stress near ceramic/cement interface in the top ceramic layer versus time
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Stress increment after cyclic loading. The stress plotted is the maximum tensile stress near the ceramic/cement interface. For the simplicity of simulation, the defect is assumed with square shape and located at the bottom center of the top ceramics layer.
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Cement flow induced subcritical crack growth
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Stress intensity factor as a function of cement flow length
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Stress intensity factor as a function of crack length
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Critical crack length as a function of β

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