Effect of Different Implant Designs on Strain and Stress Distribution under Non-Axial Loading: A Three-Dimensional Finite Element Analysis

Hélder Oliveira, Aritza Brizuela Velasco, José-Vicente Ríos-Santos, Fernando Sánchez Lasheras, Bernardo Ferreira Lemos, Francisco Javier Gil, Alexandrine Carvalho and Mariano Herrero-Climent
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Hélder Oliveira: Faculty of Health Sciences, University Fernando Pessoa, 4200-150 Porto, Portugal
Aritza Brizuela Velasco: Department of Surgery and Medical-surgical Specialties, University of Oviedo, 33006 Oviedo, Spain
José-Vicente Ríos-Santos: Department of Periodontology, University of Seville, School of Dentistry, 41009 Sevilla, Spain
Fernando Sánchez Lasheras: Mathematics Department, Faculty of Sciences, University of Oviedo, Oviedo 33007, Spain
Bernardo Ferreira Lemos: Faculty of Health Sciences, University Fernando Pessoa, 4200-150 Porto, Portugal
Francisco Javier Gil: Bioengineering Institute of Technology, International University of Catalonia, 08017 Barcelona, Spain
Alexandrine Carvalho: Faculty of Health Sciences, University Fernando Pessoa, 4200-150 Porto, Portugal
Mariano Herrero-Climent: Porto Dental Institute, 4150-518 Oporto, Portugal

IJERPH, 2020, vol. 17, issue 13, 1-17

Abstract: Implant design evolved alongside the development of implant therapy. The purpose of this finite element analysis (FEA) study was to analyze the influence of different implant designs on the stress and strain distribution to the implants and surrounding bone. Three implant designs with the same length and diameter were used. The three-dimensional geometry of the bone was simulated with a cortical bone of three different thicknesses and two medullar bone densities: low density (150 Hounsfield units) and high density (850 Hounsfield units). A 30° oblique load of 150 N was applied to the implant restoration. Displacement and stress (von Mises) results were obtained for bone and dental implants. The strain and stress distributions to the bone were higher for the tissue-level implant for all types of bone. The maximum principal strain and stress decreased with an increase in cortical bone thickness for both cancellous bone densities. The distribution of the load was concentrated at the coronal portion of the bone and implants. All implants showed a good distribution of forces for non-axial loads, with higher forces concentrated at the crestal region of the bone–implant interface. Decrease in medullar bone density negatively affects the strain and stress produced by the implants.

Keywords: dental implants; design; finite element analysis; strain distribution; stress distribution; bone quality (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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