Dynamic Stress Analysis of Upper Central Teeth Using Finite Element Method: Effect of Visco-elasticity

Khani, Mohammad Mehdi; Tafazzoli Shadpour, Mohammad; Aghajani, Farzane; Naderi, Peyman

doi:10.22041/ijbme.2011.13137

Document Type : Full Research Paper

Authors

¹ Ph.D Student, Biomechanics Department, Faculty of Biomedical Engineering, Amirkabir University of Technology

² Associate Professor, Biomechanics Department, Faculty of Biomedical Engineering, Amirkabir University of Technology

³ Dentist of Dental Research Center, Tehran University of Medical Sciences

⁴ M.Sc, Biomechanics Department, Faculty of Biomedical Engineering, Amirkabir University of Technology

10.22041/ijbme.2011.13137

Abstract

Stress analysis is a proper tool in evaluation of vulnerable regions of dental tissues exposed to cyclic loading due to mastication and other physiological functions. In this study, effects of visco-elastic property of dental components on the distribution of stress are investigated in finite element models of upper central tooth prone to dynamic loading. Sensitivity of stress pulse to the visco-elastic property is studied. Results indicate reduction of stress pulse amplitude by elevation of visco-elastic parameter with highest effect in enamel-cementum junction and then in enamel-dentin junction. The visco-elastic property causes smoothening of the stress distribution in dental tissues. Such effect is due to reduction of stress wave amplitude and elevation of the ratio of minimum to maximum stress values. Increased visco-elasticity of components results in elevated phase shift between load and stress waves and higher attenuation of stress wave. This causes slow propagation of attenuated wave leading to lower maximum stress after reflection of stress wave in boundaries and junctions.

Keywords

Main Subjects

References

[1] Romeed S. A., et al., A comparison of 2D and 3D finite element analysis of a restored tooth; J. oral rehab, 2006; 33: 209-215.

[2] Toparli M., Stress analysis in a post-restored tooth utilizing finite element method; J. oral rehab, 2003; 30: 470-476.

[3] Jeon p., et al., Three-dimensional finite element analysis of stress in the periodontal ligament of the maxillary first molar with simulated bone loss; Am. J. Orthod. DentofacialOrthop, 2001; 119: 498-504.

[4] Kishen A., Kumar G. V., Chen N. N., Stress-strain response in human dentine: rethinking fracture predilection in post-core restored teeth; J. Dent. Traumatol, 2004; 20: 90-100.

[5] Telli C., Gulkan P., et al., Additional studies on the distribution of stresses during vertical compaction of gutta-percha in the root canal; Brit. Dent. J, 1999; 187: 32-37.

[6] Rees J. S., The role of cuspal flexure in the development of abfraction lesions: a Finite element study; Europ. J. oral scien, 1998; 106: 1028-1032.

[7] Rudolph D. J., et al., A Finite Element Model of apical force distribution from orthodontic tooth movement; Angle orthodon, 2001; 71: 127-131.

[8] Craig R. G., et al., Compressive properties of enamel, dental cements, and gold; J. Dent. Res, 1961; 40: 936-945.

[9] Sano H., et al., Tensile properties of mineralized and dematerialized human and bovine dentin; J. Dent. Res,1994; 73: 1205-1211.

[10] Dorrow C., et al., Finite element simulation of in vivo tooth mobility in comparison with experimental result; J. mech. Med. Boil, 2003; 3:79-94.

[11] Kinney J. H., et al., Hardness and Young’s modulus of human peritubular and intertubular dentin; Arch. Oral boil, 1996; 41: 9-13.

[12]Wood J. D., et al., Mechanical behavior of the Dentin-Enamel Interface; 9^th Intl. Cong. Soc. Experimental Mech, 2000.

[13] Ash M. M., Wheerer’s Dental Anatomy, Physiology and Occlusion; 8^nd Edition, Elsevier, 2003.

[14]Kardestuncer H., et al., Finite element handbook; First Edition, New York, McGraw-Hill, 1987.

[15]O’Brien W. J., Dental Material and Their Selection; 2^nd Edition, Chicago, Quintessence publishing co, 2002.

[16]Fung Y.C., Biomechanics: Mechanical properties of living tissue, 2^nd Edition, New York, Springer, 1993.

[17]Fratzl P., Collagen: Structure and Mechanics, an Introduction. In: Collagen: Structure and Mechanics; 3^nd Edition, New York, Springer, 2008.

[18]Shillinburg H. T., et al., Fundamentals Of fixed prosthodontics; 3^rd Edition, Chicago, Quintessence publishing co, 1997.

[19]Craig R. G., Restorative Dental Materials; 11^rd Edition, Elsevier, 2002.

[20]Anderson T. L., Fracture mechanics: Fundamentals and application; 5^rd Edition, Boca Raton, Taylor & Francis, 2005.

[21] Shigley J. E., Mischke C. R.; Standard handbook of machine design; First Edition, New York, McGraw-Hill, 1986.

Iranian Journal of Biomedical Engineering

Dynamic Stress Analysis of Upper Central Teeth Using Finite Element Method: Effect of Visco-elasticity

References

References

Volume 5, Issue 1 - Serial Number 1
June 2011
Pages 13-20

Dynamic Stress Analysis of Upper Central Teeth Using Finite Element Method: Effect of Visco-elasticity

References

References

Volume 5, Issue 1 - Serial Number 1June 2011Pages 13-20

Volume 5, Issue 1 - Serial Number 1
June 2011
Pages 13-20