Finite element analysis of peri-implant bone volume affected by stresses around Morse taper implants: effects of implant positioning to the bone crest

Macedo, José Paulo; Pereira, Jorge; Faria, J. G.; Souza, Júlio C. M.; Alves, J. I.; López‐López, José; Henriques, Bruno

doi:10.1080/10255842.2018.1507025

Cited by 24 publications

(34 citation statements)

References 37 publications

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“…Several methods, such as strain gauges, photoelastic models, and finite element analysis (FEA), have been used to investigate the relationship between peri-implant bone remodeling, implant design, and loading. Considering the experimental limitations of in vivo studies, FEA has played an important role in the study of the biomechanics of the implant and surrounding bone, as well as in predicting the success of implant systems in various clinical situations [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Biomechanical Evaluation of Stress Distribution in Equicrestal and Sub-crestally Placed, Platform-Switched Morse Taper Dental Implants in D3 Bone: Finite Element Analysis

Ellendula¹,

Sekar²,

Nalla³

et al. 2022

Cureus

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Aim The aim of the study was to assess the effect of implant placement depth on stress distribution in bone around a platform-switched and Morse taper dental implants placed at the equi-crestal and 1 mm and 2 mm sub-crestal levels in a D3 bone using the 3D finite element analysis. Methodology A mechanical model of a partially edentulous maxilla was generated from a computerized tomography (CT) scan of an edentulous patient, as it can give exact bony contours of cortical bone. Also, from accurate geometric measurements obtained from the manufacturer, 3D models of Morse taper and platform-switched implants were manually drawn. The implant and bone models were then superimposed to simulate implant insertion in bone. Three implant positioning levels such as the equi-crestal, 1 mm sub-crestal, and 2 mm sub-crestal models were created, and meshing was done to create the number of elements for distribution of applying loads. The elastic properties of cortical bone and implant, such as Young's modulus and Poisson's ratio (µ), were determined. A load (axial and oblique) of 200N that simulated masticatory force was applied. Results On comparing stresses within the bone around the equi-crestal and 1 mm and 2 mm sub-crestal implants, it was observed that the maximum stresses were seen within cortical bone around the equi-crestally placed implant (21.694), the least in the 2 mm sub-crestally placed implant (18.85), and intermediate stresses were seen within the 1 mm sub-crestally placed implant (18.876). Conclusion Sub-crestal (1-2mm) placement of a Morse taper and a platform-switched implant is recommended for long-term success, as maximum von Mises stresses were found within cortical bone around the equi-crestal implant followed by the 1 mm sub-crestal implant and then the 2 mm sub-crestal implant.

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Section: Introductionmentioning

confidence: 99%

Biomechanical Evaluation of Stress Distribution in Equicrestal and Sub-crestally Placed, Platform-Switched Morse Taper Dental Implants in D3 Bone: Finite Element Analysis

Ellendula¹,

Sekar²,

Nalla³

et al. 2022

Cureus

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“…The finite element method (FEM) has been used for the assessment of the stress distribution of dental implants for several clinical situations, materials, and design 28–30 . FEM allows the modeling of dental structures with good accuracy, avoiding time‐consuming on in vitro or even in vivo assays 31–33 .…”

Section: Introductionmentioning

confidence: 99%

“…23,26,27 The finite element method (FEM) has been used for the assessment of the stress distribution of dental implants for several clinical situations, materials, and design. [28][29][30] FEM allows the modeling of dental structures with good accuracy, avoiding time-consuming on in vitro or even in vivo assays. [31][32][33] Despite some simplifications of the complex biological structures by FEM, such numerical method can provide insights on the stress state of peri-implant regions and even osseointegration rate prediction.…”

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confidence: 99%

Biomechanical analyses of one‐piece dental implants composed of titanium, zirconia, PEEK, CFR‐PEEK, or GFR‐PEEK: Stresses, strains, and bone remodeling prediction by the finite element method

et al. 2021

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This work aimed to assess the biomechanics, using the finite element method (FEM), of traditional titanium Morse taper (MT) dental implants compared to one-piece implants composed of zirconia, polyetheretherketone (PEEK), carbon fiber-reinforced PEEK (CFR-PEEK), or glass fiber-reinforced PEEK (GFR-PEEK). MT and one-piece dental implants were modeled within a mandibular bone section and loaded on an oblique force using FEM. A MT implant system involving a Ti6Al4V abutment and a cp-Ti grade IV implant was compared to one-piece implants composed of cp-Ti grade IV, zirconia (3Y-TZP), PEEK, CFR-PEEK, or GFR-PEEK. Stress on bone and implants was computed and analyzed while bone remodeling prediction was evaluated considering equivalent strain. In comparison to one-piece implants, the traditional MT implant revealed higher stress peak (112 MPa). The maximum stresses on the onepiece implants reached $80 MPa, regardless their chemical composition. MT implant induced lower bone stimulus, although excessive bone strain was recorded for PEEK implants. Balanced strain levels were noticed for reinforced PEEK implants of which CFR-PEEK one-piece implants showed proper biomechanical behavior. Balanced strain levels might induce bone remodeling at the peri-implant region while maintaining low risks of mechanical failures. However, the strength of the PEEKbased composite materials is still low for long-term clinical performance.biomechanics, dental implants, dental materials, finite elements analysis, implant design 1 | INTRODUCTION Titanium dental implants have been increasingly used to replace missing teeth within a high long-term success rate as reported in literature. [1][2][3][4] Dental implants are often composed of two components: the endosseous implant itself and the abutment. The connection between traditional abutment and endosseous implants can be commonly achieved by screwing the abutment in the inner implant surfaces up to a maximum adequate torque or within a Morse taper (MT) effect, in which an applied preload generates stresses that keep the components attached to each each other. 5,6 At last, a single-or multi-unit prosthesis is cemented and/or screwed over the abutment to replace the coronal dental structure. MT implant systems typically reveal higher mechanical stability due to their connection on contacting surfaces and distribution of stresses to the bone. [5][6][7][8] However, the microgap existing between

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“…A high number of studies present the use of FEA in oral implantology. They evaluate biomechanical aspects [59,60,61,62,63] but also tissue-related issues [64,65,66,67,68]. Such tests might provide only partially relevant information since the accurate definition of tissue parameters is impossible.…”

Section: Discussionmentioning

confidence: 99%

New Dental Implant with 3D Shock Absorbers and Tooth-Like Mobility—Prototype Development, Finite Element Analysis (FEA), and Mechanical Testing

et al. 2019

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Background: Once inserted and osseointegrated, dental implants become ankylosed, which makes them immobile with respect to the alveolar bone. The present paper describes the development of a new and original implant design which replicates the 3D physiological mobility of natural teeth. The first phase of the test followed the resistance of the implant to mechanical stress as well as the behavior of the surrounding bone. Modifications to the design were made after the first set of results. In the second stage, mechanical tests in conjunction with finite element analysis were performed to test the improved implant design. Methods: In order to test the new concept, 6 titanium alloy (Ti6Al4V) implants were produced (milling). The implants were fitted into the dynamic testing device. The initial mobility was measured for each implant as well as their mobility after several test cycles. In the second stage, 10 implants with the modified design were produced. The testing protocol included mechanical testing and finite element analysis. Results: The initial testing protocol was applied almost entirely successfully. Premature fracturing of some implants and fitting blocks occurred and the testing protocol was readjusted. The issues in the initial test helped design the final testing protocol and the new implants with improved mechanical performance. Conclusion: The new prototype proved the efficiency of the concept. The initial tests pointed out the need for design improvement and the following tests validated the concept.

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Finite element analysis of peri-implant bone volume affected by stresses around Morse taper implants: effects of implant positioning to the bone crest

Cited by 24 publications

References 37 publications

Biomechanical Evaluation of Stress Distribution in Equicrestal and Sub-crestally Placed, Platform-Switched Morse Taper Dental Implants in D3 Bone: Finite Element Analysis

Biomechanical Evaluation of Stress Distribution in Equicrestal and Sub-crestally Placed, Platform-Switched Morse Taper Dental Implants in D3 Bone: Finite Element Analysis

Biomechanical analyses of one‐piece dental implants composed of titanium, zirconia, PEEK, CFR‐PEEK, or GFR‐PEEK: Stresses, strains, and bone remodeling prediction by the finite element method

New Dental Implant with 3D Shock Absorbers and Tooth-Like Mobility—Prototype Development, Finite Element Analysis (FEA), and Mechanical Testing

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