Stresses present in bone surrounding dental implants in FEM model experiments

• Autorzy: Żmudzki J. , Walke W. , Chladek W.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Appropriate selection of material and geometric characteristics of intraosseus pillar implant part creates a possibility to control the bone tissue loading. Design/methodology/approach: A basic tool that is commonly used the evaluation of bone loading state is the linear FEM analysis. It requires setting of appropriate experiment conditions. Hence, an analysis has been carried out in order to determine the influence of dividing method of finite elements (tetragonal type 187 in Ansys system v.11) on stresses in pillar and surrounding bone tissue. Findings: Seeking of loading values cortical bone tissue is highly affected by the increase of mesh density on the edge of implant insertion into the cortex bone. Loading stresses values have significantly increased along with increased mesh density, whereas the differences have even reach 47 MPa. Research limitations/implications: Research has been carried out only for the Ansys system in the linear range assuming standard shape and mechanical characteristics of implant and bone, as well as regarding the after the osseointegration phase because if the presumed complete adherence of the pillar to the bone. Practical implications: Excessive increase of mesh density leads to overestimation of loading stresses values and further to an unjustified increase of pillars' diameter. At the other hand, too large elements might lead, through an underestimation of loading stress level, to overloading atrophy of bone tissue. Originality/value: This paper points out the necessity of more determined activities aimed on defining appropriate and uniform FEM experiment conditions that would enable achievement of more real results of model researches and their comparability.

Słowa kluczowe

EN

numerical techniques; dental implant; bone; FEM

PL

techniki numeryczne; implanty dentystyczne; kość

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 27, nr 1
• Strony: 71--74
• Opis fizyczny: Bibliogr. 20 poz., il., tab.

Twórcy

autor

Żmudzki J.

autor

Walke W.

autor

Chladek W.

• Department of Technological Processes Modelling and Medical Engineering,Faculty of Materials Science and Metallurgy, Silesian University of Technology,ul. Krasińskiego 8, 40-019 Katowice, Poland,

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