Analysis of Bone-implant Interfacial Stress during Disocclusion in Complete Implant-supported Prosthesis: A Finite Element Study
Journal Title: Journal of Advances in Medicine and Medical Research - Year 2017, Vol 21, Issue 8
Abstract
Aim: Little is known about the biomechanical behavior of disocclusion patterns in implant-supported prostheses. Thus, the aim of the present study was to analyze the stresses generated at bone-implant interface during different patterns of disocclusion in an implant-supported lower complete denture without free distal ends using the three-dimensional (3-D) finite element method. Study Design: Finite element method. Methods: A 3-D model of a complete denture supported by five inter-foraminal implants and two distal was developed (CAE software Abaqus). A canine guide disocclusion (CG) was simulated applying a nodal load of 15 N at an angle of 45° on the canine tooth prosthesis, while to a bilateral balanced occlusion (BBO) a similar load pattern was applied at four distinct points, bilaterally. Linear elastic static analysis was used to compare the magnitude of maximum and minimum principal stresses at bone-implant interface for each simulation. Results: The disocclusion pattern generated during CG exhibited a greater stress concentration at the bone-implant interface of the distal implant on the working side. BBO showed a more homogeneous stress distribution pattern at the bone-implant interface of the two distal implants. Anterior implants showed lower stress concentration. Conclusions: Bilateral balanced occlusion (BBO) resulted in a more favorable stress distribution in this complete implant-supported prosthesis model.
Authors and Affiliations
Gustavo Diniz Greco, Carolina Nemesio de Barros Pereira, Giovani Lana Peixoto de Miranda, Guilherme Carvalho Silva, Cláudia Silami de Magalhães, Allyson Nogueira Moreira
Keywords
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- EP ID EP311778
- DOI 10.9734/BJMMR/2017/33607
- Views 71
- Downloads 0
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