Numerical FEM modeling in dental implantology

Roateşi, Iulia; Roateşi, Simona

doi:10.1063/1.4952126

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…Note that we made several versions of the mesh to a fineness which does not lead to errors greater than a 3.5% solution [33]. Element convergence tests were performed in order to obtain a reliable FE model to study the osseointegration progress.…”

Section: Discussionmentioning

confidence: 99%

Modeling of Dental Implant Osseointegration Progress by Three-Dimensional Finite Element Method

Roateşi

2020

Applied Sciences

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As osseointegration is a time-dependent process, biomechanical assessment is thought to determine whether a fibrous encapsulation or a bone covering will develop around an implant, according to the stress in the implant and surrounding bone. This study proposes a model for stress evaluation by finite element method (FEM) during the osseointegration progress, the main factor implied in implant success or failure. The loadings due to masticatory forces generate stress concentration and consequently, an adequate risk concerning the implant stability should be assessed. An accurate FEM model is used to calculate the stress and displacement in the whole implant–bone system during the osseointegration progress. This process is simulated by taking into account the gradual increase in the damaged biomechanical properties of the cortical bone. The results reveal that as the implant osseointegration occurs gradually, the bone stiffness from the peri-implant area increases gradually, such that in the end (healing) we observed that the cortical bone begins to take over the bending loading. In addition, the displacements decrease as the osseointegration gradually occurs and the cortical bone stress reaches higher values, which are placed in the mandibular ridge. The FEM is suitable to model the osseointegration progress, offering valuable information concerning the stress concentration zones in the implant–bone system and consequently, the risk evaluation, both for pre- and post-osseointegration.

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Section: Discussionmentioning

confidence: 99%

Modeling of Dental Implant Osseointegration Progress by Three-Dimensional Finite Element Method

Roateşi

2020

Applied Sciences

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“…The FEA approach may be applied efficiently to analyze the biomechanical behavior of the crown at the cement-implant interface and to verify the areas of elevated stress concentration in clinical and in vitro analyses 19 . Over 2D axially symmetric models, FEA models have offered a more precise three-dimensional understanding of the events happening at the interface of the crown implant 20,21,22 . In addition, statistical analysis has been proven to be a useful tool for determining the factors that significantly affect stress and strain concentrations 23 .…”

Section: Introductionmentioning

confidence: 99%

FEM: Mono-implant cement retained crown with two different adhesive materials

Shakir,

Muhsin,

Al Marza

2023

J Bagh Coll Dent

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Background: The finite element method (FEM) is expected to be one of the most effective computational tools for measuring the stress on implant-supported restorations. This study was designed using the 3D-FEM to evaluate the effect of two adhesive luting types of cement on the occlusal stress and deformation of a hybrid crown cemented to a mono-implant. Materials and Method: The mono-screw STL file was imported into the CAD/CAM system library from a database supported by De-Tech Implant Technology. This was to assist in the accurate reproduction of details and design of a simulated implant abutment. Virtually, a digital crown was designed to be cemented on an abutment screw. A minimum occlusal thickness of 1mm and marginal fitting of 1.2mm was intended. An 80µm cement interface thickness for this study’s purposes was applied using U-Cem Premium and 3M RelyXTm adhesives. The FEA software meshed into tetrahedral elements. Two three-dimensional finite element models were simulated under different loads of 200N, 400N, 600N, 800N, 1000N, 1200N, and 1400N. Results: The results showed that the hybrid ceramic crown attached to a mono-implant with each adhesive cement exhibited comparable stress and strain. However, the amount of distortion was less when RelyX cement was used. Conclusion: Overall, it was advisable to use 3M RelyXTm adhesive cement up to 1400N load.

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Application of numerical modeling in dental implantology biomechanics

Roateşi

2019

AIP Conference Proceedings

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Numerical FEM modeling in dental implantology

Cited by 3 publications

References 4 publications

Modeling of Dental Implant Osseointegration Progress by Three-Dimensional Finite Element Method

Modeling of Dental Implant Osseointegration Progress by Three-Dimensional Finite Element Method

FEM: Mono-implant cement retained crown with two different adhesive materials

Application of numerical modeling in dental implantology biomechanics

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