Abstract:
OBJECTIVE:To investigate the effects of graded models on the biomechanical behavior of a bone-implant system under osteoporotic conditions. Methodology : A finite element model (FEM) of the jawbone segments with a titanium implant is used. Two types of models (a graded model and a non-graded model) are established. The graded model is established based on the graded variation of the elastic modulus of the cortical bone and the non-graded model is defined by homogeneous cortical bone. The vertical and oblique loads are adopted. The max von Mises stresses and the max displacements of the cortical bone are evaluated. RESULTS:Comparing the two types of models, the difference in the maximum von Mises stresses of the cortical bone is more than 20%. The values of the maximum displacements in the graded models are considerably less than in the non-graded models. CONCLUSIONS:These results indicate the significance of taking into account the actual graded properties of the cortical bone so that the biomechanical behavior of the bone-implant system can be analyzed accurately.
journal_name
Pak J Med Scijournal_title
Pakistan journal of medical sciencesauthors
Li Y,Shuang Liu Z,Ming Bai X,Zhang Bdoi
10.12669/pjms.292.2963subject
Has Abstractpub_date
2013-04-01 00:00:00pages
619-24issue
2eissn
1682-024Xissn
1681-715Xjournal_volume
29pub_type
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journal_title:Pakistan journal of medical sciences
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