The Biomechanical Responses of Mandibular Bone Installed with Fixed Partial Denture

Abstract:

This study aimed to evaluate the biomechanical responses in the peri-implant bony structure installed with the fixed partial dentures (FPDs). Unlike traditional configuration, the FPD considered here comprises a superstructure and is supported by three implants. The computational model of mandibular bone and the implant prosthesis were constructed based on patient-specific computerized tomography (CT) images and Computer Aided Design (CAD) tools. To better reflect the real clinical situation, the 3D real-time loading data of maximum voluntary clenching measured using piezo-electric force transducers in patient were adopted in the 3D finite element (FE) analyses (FEA). The von Mises equivalent stress, maximum shear stress, equivalent strain and strain energy density in the peri-implant bone regions are quantified. The peak stresses and strains in the peri-implant bone were observed around the neck of the implant, indicating risk of micro-motion and bone resorption. In this study, we successfully conducted a computational simulation in silico based on in vivo 3D force measurement of a specific patient. The results provided important biomechanical data for clinical treatment, potentially helping enhancing the longevity and reliability of the implant-supported FPD restoration.

• Periodical: Applied Mechanics and Materials (Volume 846)
• Pages: 276-281
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.846.276
• Online since: July 2016
• Authors: Nobuhiro Yoda*, Zhi Peng Liao, Jun Ning Chen, Keiichi Sasaki, Qing Li
• Keywords: Biomechanics, Bone Remodeling, Dental Implant, Finite Element Analysis, Fixed Partial Denture (FPD)

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