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KMID : 0362120040260010069
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Journal of Technologic Dentistry
2004 Volume.26 No. 1 p.69 ~ p.76
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A 3-dimensional Finite Element Analysis of Stress Distribution in the Supporting Bone by Diameters of Dental Implant Fixture
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Lee Myung-Kon
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Abstract
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The objective of this finite element method study was to analyze the stress distribution inducedon a supporting bone by 3.75, 4.0, 5.0diameter of dental implant fixture(13length). 3-dimensional finite element models of simplified gold alloy crown(7height) and dental implantstructures(gold cylinder screw, gold cylinder, abutment screw, abutment, fixture and supportingbone(cortical bone, cancellous bone) designs were subjected to a simulated biting force of 100 Nwhich was forced over occlusal plane of gold alloy crown vertically.Maximum von Mises stresses(MPa) under vertical loading were 9.693(3.75diameter offixture), 8.885(4.0diameter of fixture), 6.301(5.0diameter of fixture) and the highest vonMises stresses of all models were concentrated in the surrounding crestal cortical bone. The wide diameter implant was the good choice for minimizing cortical bone-fixture interface stress.
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KEYWORD
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dental implant, fixture diameter, fem, stress distribution
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