Mechanical behaviour of dental implants

Bicudo, Pedro; Reis, José Alexandre; Deus, A.M.; Reis, Luisa Fernanda Ribeiro; Vaz, M. Fátima

doi:10.1016/j.prostr.2016.02.005

Cited by 26 publications

(19 citation statements)

References 6 publications

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“…The most implemented material in manufacturing of dental implants is titanium of different grades of pureness, since this material promotes a stable and functional connection between the bone and the surface of the implant [2], [3].…”

Section: Introductionmentioning

confidence: 99%

“…Hence, reducing stress in the bone-implant interface area can lead to reduction of osseointegration damage and improve dental implant stability inside the bone [6]. Moreover, osseointegration depends on many factors such as the type of loading applied, the length and diameter of the implant, its geometry and surface, the bone-implant surface, and the quality of surrounding bone [2].…”

Section: Introductionmentioning

confidence: 99%

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The Worst-Case Conditions of Endosseous Dental Implants Vary in Implant Diameter and Length: A Finite Element Analysis

Zhang¹,

Co.²,

Li³

et al. 2019

IJMMM

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For the dental implant which is available in various dimensions and/or configurations, the dynamic testing should be performed under "worst-case" condition. Thus, a finite element analysis was applied to investigate the effect of implant diameter and length on the stress distribution of dental implant and find out the worst-case condition. In this paper, six models were computer-simulated by varying the implant diameters (3.5, 4.3 and 5.0mm) and lengths (8 and 15mm). The models were used to investigate the influence of length factor: (1) implants with a diameter of 3.5mm and lengths of 8mm and 15mm; (2) implant diameters of 4.3mm and lengths of 8mm and 15mm; (3) implant diameters of 5.0mm and lengths of 8mm and 15mm. The influence of implant diameters was modeled using implant with a length of 8mm and diameter of 3.5, 4.3 and 5.0mm, length of 15mm and diameter of 3.5, 4.3 and 5.0mm. One vertical load (200N) was applied on the horizontal plane of the crown. A pre-torque of 30N• cm on the central screw was loaded to simulated pretightening force. The results showed that the maximum stress () of each component occurred in the model with the longest implant length and smallest diameter (model 2).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Worst-Case Conditions of Endosseous Dental Implants Vary in Implant Diameter and Length: A Finite Element Analysis

Zhang¹,

Co.²,

Li³

et al. 2019

IJMMM

View full text Add to dashboard Cite

show abstract

“…There are scientific publications which discuss how can be simulated some of these measuring methods and how influence the implant type (shape, threads, surface) the stress distribution around the implant depending of the bone material properties and structures [10][11][12][13][14]. The direct simulation of a screw implant stability is not a clear process.…”

Section: Introductionmentioning

confidence: 99%

Calculating ISQ Primary Stability of a Dental Implant through Micromotion

Pammer

2019

Period. Polytech. Mech. Eng.

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There are several types of primary and secondary stability measuring methods, but there are no calculating methods to determine direct primary stability. The aim of this work is to make a calculation method for primary stability. The out coming result of the calculation should be the same form and unit as available in the clinical and used RFA (Resonance Frequency Analysis) method, especially the ISQ (Implant Stability Quotient). Dental implant analog screws were inserted in bone modelling standard PUR (Polyurethane) solid foam blocks, and the insertion torque and the micromotion was monitored. The ISQ values of the inserted screws were measured also. On the basis of results, the characteristic equation was determined, which showed an excellent correlation (r = 0.96) between the micro mobility and ISQ. To simulate the micro mobility of an inserted screw with FEA (Finite Element Analysis) in any case of the change the bone material properties is not difficult instead of in vitro and in vivo examinations. Using the simulation results and the characteristic equation the clinically used ISQ value could be determinable. Thanks to this simple method, it is easy to monitor virtually the stability change in any lesion of bone structure. As a result of the conducted measurements and simulations, it can be concluded that the ISQ value, which represent the implant primary stability, can be calculated via FEA. With this simulation method, it is possible to predict and monitor pre-clinically the primary stability of dental implants with new geometries.

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“…Especially, the stability of the implant under cyclic biting loads, the integrity of the implant to the bone tissue, and stress transformation from the implant to the bone tissue are the most important concerns in the success of implantation. In order to make considerable progress in this technology, it is essential to determine the reasons underlying the failure of implants [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…e integration mechanism of the implant is based on the placement and then the quantity and quality of cortical and trabecular bones, which affect the primary stability and so the fixation of the implant [4]. Herein, the osseointegration, which consists of anchorage of metallic implants to the related bone, makes the implant-bone interaction site the most important issue.…”

Section: Introductionmentioning

confidence: 99%

The Mechanical Behaviors of Various Dental Implant Materials under Fatigue

Bayata

Yıldız

2018

Advances in Materials Science and Engineering

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e selection of materials has a considerable role on long-term stability of implants. e materials having high resistance to fatigue are required for dental implant applications since these implants are subjected to cyclic loads during chewing. is study evaluates the performance of different types of materials (AISI 316L stainless steel, alumina and its porous state, CoCr alloys, yttriumstabilized zirconia (YSZ), zirconia-toughened alumina (ZTA), and cp Ti with the nanotubular TiO 2 surface) by finite element analysis (FEA) under real cyclic biting loads and researches the optimum material for implant applications. For the analysis, the implant design generated by our group was utilized. e mechanical behavior and the life of the implant under biting loads were estimated based on the material and surface properties. According to the condition based on ISO 14801, the FEA results showed that the equivalent von Mises stress values were in the range of 226.95 MPa and 239.05 MPa. e penetration analysis was also performed, and the calculated penetration of the models onto the bone structure ranged between 0.0037389 mm and 0.013626 mm. L-605 CoCr alloy-assigned implant model showed the least penetration, while cp Ti with the nanotubular TiO 2 surface led to the most one. However, the difference was about 0.01 mm, and it may not be evaluated as a distinct difference. As the final numerical evaluation item, the fatigue life was executed, and the results were achieved in the range of 4 × 10 5 and 1 × 10 9 cycles. ese results indicated that different materials showed good performance for each evaluation component, but considering the overall mechanical performance and the treatment process (implant adsorption) by means of surface properties, cp Ti with the nanotubular TiO 2 surface material was evaluated as the suitable one, and it may also be implied that it displayed enough performance in the designed dental implant model.

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Mechanical behaviour of dental implants

Cited by 26 publications

References 6 publications

The Worst-Case Conditions of Endosseous Dental Implants Vary in Implant Diameter and Length: A Finite Element Analysis

The Worst-Case Conditions of Endosseous Dental Implants Vary in Implant Diameter and Length: A Finite Element Analysis

Calculating ISQ Primary Stability of a Dental Implant through Micromotion

The Mechanical Behaviors of Various Dental Implant Materials under Fatigue

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