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Biomechanical response of implant systems placed in the maxillary posterior region under various conditions of angulation, bone density, and loading.
Int J Oral Maxillofac Implants. 2008 Jan-Feb; 23(1):57-64.IJ

Abstract

PURPOSE

The aim of this study was to determine the relative contribution of changes in implant system, position, bone type, and loading condition on the biomechanical response of a single-unit implant-supported restoration using nonlinear 3-dimensional finite element analysis (3D FEA).

MATERIALS AND METHODS

FEA models of a single-unit (crown) restoration supported by the Frialit-2 implant and MH-6 abutment or the Straumann standard implant with the Straumann solid abutment were used. Each system was analyzed by FEA with both straight and 20-degree angled abutments. Simulated implant placement was performed in the maxillary premolar area with 3 variations in implant orientation relative to the residual ridge. Analysis of each orientation was conducted for each of 4 bone quality types described by Lekholm and Zarb, with lateral and axial loading conditions imposed. The effect of each variable was expressed as a percentage of the total sum of squares as computed using analysis of variance.

RESULTS

Larger strain values were noted in cortical bone with lateral force and the Frialit-2 system. Bone strain increased with decreasing bone density and was affected primarily by bone quality. Implant stress was influenced mainly by implant position.

CONCLUSIONS

Better stress/strain distribution is possible when implants are placed along the axis of loading with multiple areas of cortical contact. The Straumann solid abutment performed better as a force-transmission mechanism.

Authors+Show Affiliations

Lin CL
Department of Mechanical Engineering, Chang Gung University, Tao-yuan, Taiwan.
Wang JC
No affiliation info available
Ramp LC
No affiliation info available
Liu PR
No affiliation info available

MeSH

Alveolar ProcessBicuspidBiomechanical PhenomenaBone DensityComputer SimulationCrownsDental AbutmentsDental Implantation, EndosseousDental Implants, Single-ToothDental Prosthesis DesignDental Stress AnalysisFinite Element AnalysisHumansImaging, Three-DimensionalMaxillaNonlinear DynamicsStress, MechanicalTomography, X-Ray ComputedWeight-Bearing

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18416413

Citation

Lin, Chun-Li, et al. "Biomechanical Response of Implant Systems Placed in the Maxillary Posterior Region Under Various Conditions of Angulation, Bone Density, and Loading." The International Journal of Oral & Maxillofacial Implants, vol. 23, no. 1, 2008, pp. 57-64.
Lin CL, Wang JC, Ramp LC, et al. Biomechanical response of implant systems placed in the maxillary posterior region under various conditions of angulation, bone density, and loading. Int J Oral Maxillofac Implants. 2008;23(1):57-64.
Lin, C. L., Wang, J. C., Ramp, L. C., & Liu, P. R. (2008). Biomechanical response of implant systems placed in the maxillary posterior region under various conditions of angulation, bone density, and loading. The International Journal of Oral & Maxillofacial Implants, 23(1), 57-64.
Lin CL, et al. Biomechanical Response of Implant Systems Placed in the Maxillary Posterior Region Under Various Conditions of Angulation, Bone Density, and Loading. Int J Oral Maxillofac Implants. 2008 Jan-Feb;23(1):57-64. PubMed PMID: 18416413.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biomechanical response of implant systems placed in the maxillary posterior region under various conditions of angulation, bone density, and loading. AU - Lin,Chun-Li, AU - Wang,Jen-Chyan, AU - Ramp,Lance C, AU - Liu,Perng-Ru, PY - 2008/4/18/pubmed PY - 2008/7/11/medline PY - 2008/4/18/entrez SP - 57 EP - 64 JF - The International journal of oral & maxillofacial implants JO - Int J Oral Maxillofac Implants VL - 23 IS - 1 N2 - PURPOSE: The aim of this study was to determine the relative contribution of changes in implant system, position, bone type, and loading condition on the biomechanical response of a single-unit implant-supported restoration using nonlinear 3-dimensional finite element analysis (3D FEA). MATERIALS AND METHODS: FEA models of a single-unit (crown) restoration supported by the Frialit-2 implant and MH-6 abutment or the Straumann standard implant with the Straumann solid abutment were used. Each system was analyzed by FEA with both straight and 20-degree angled abutments. Simulated implant placement was performed in the maxillary premolar area with 3 variations in implant orientation relative to the residual ridge. Analysis of each orientation was conducted for each of 4 bone quality types described by Lekholm and Zarb, with lateral and axial loading conditions imposed. The effect of each variable was expressed as a percentage of the total sum of squares as computed using analysis of variance. RESULTS: Larger strain values were noted in cortical bone with lateral force and the Frialit-2 system. Bone strain increased with decreasing bone density and was affected primarily by bone quality. Implant stress was influenced mainly by implant position. CONCLUSIONS: Better stress/strain distribution is possible when implants are placed along the axis of loading with multiple areas of cortical contact. The Straumann solid abutment performed better as a force-transmission mechanism. SN - 0882-2786 UR - https://www.unboundmedicine.com/medline/citation/18416413/Biomechanical_response_of_implant_systems_placed_in_the_maxillary_posterior_region_under_various_conditions_of_angulation_bone_density_and_loading_ DB - PRIME DP - Unbound Medicine ER -