Prognosis of implant longevity in terms of annual bone loss: a methodological finite element study

Demenko, Vladislav; Linetskiy, Igor; Linetska, Larysa; Nesvit, Vitalij; Shevchenko, A. K.; Yefremov, Oleg; Weisskircher, Hans-Werner

doi:10.1080/10255842.2015.1005079

Cited by 16 publications

(10 citation statements)

References 36 publications

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“…There is controversy as to the causes for failures. Nonetheless, one cause for failure can be occlusal overload 3,4. Human mastication, dietary habits and parafunctional loads are cyclic and multidirectional and of variable magnitudes 5–7.…”

Section: Introductionmentioning

confidence: 99%

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Bite force and dental implant treatment: a short review

Flanagan¹

2017

MDER

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Dental implants are placed endosseously, and the bone is the ultimate bearer of the occlusal load. Patients are not uniform in the maximum bite force they can generate. The occlusal biting load in the posterior jaw is usually about three times of that found in the anterior. It is possible for supporting implants to be overloaded by the patients’ biting force, resulting in bone loss and failure of the fixture. Bite force measurement may be an important parameter when planning dental implant treatment. Some patients can generate extreme biting loads that may cause a luxation of the fixture and subsequent loss of osseointegration. A patient with low biting force may be able to have a successful long-term outcome even with poor anatomical bone qualities. Patients with a high bite force capability may have an increased risk for late component fracture or implant failure. There is no correlation of any bite force value that would indicate any overload of a given implant in a given osseous site. Nonetheless, after bite force measurement, a qualitative judgement may be made by the clinician for the selection of an implant diameter and length and prosthetic design.

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Section: Introductionmentioning

confidence: 99%

“…Nonetheless, one cause for failure can be occlusal overload. 3 , 4 Human mastication, dietary habits and parafunctional loads are cyclic and multidirectional and of variable magnitudes. 5 – 7 The posterior human bite force magnitude is about three times that of the anterior.…”

Section: Introductionmentioning

confidence: 99%

Bite force and dental implant treatment: a short review

Flanagan¹

2017

MDER

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“…Such peaks are unfavourable, as high levels of strain may cause bone rupture by fatigue, being irreparable damage due to start at about 20000 μɛ. 17,30,43,49,50 The “two pins model” presents a smoothing effect on the first two strain curves, which are relatively close to the strains curves of the natural model. Therefore, the probability of stress-shielding effect to occur slightly decreased and the irregular peaks of strain disappeared.…”

Section: Discussionmentioning

confidence: 64%

Modelling and simulation of alternative designs for the femur–implant interface of Journey patellofemoral prosthesis

Castro

Completo

Simões

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part L:

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The implantation of conventional patellofemoral arthroplasty solutions has been identified as a source of later femur weakness, which is associated with bone resorption and stress-shielding effect. In this work, the Journey PFJ® arthroplasty system, of Smith & Nephew (UK), is investigated. The purpose is to evaluate the structural effects of different femoral components on the bone–implant interface. The finite element method is used to evaluate the influence of the geometry and stiffness of alternative implants, for post-implantation and long-term scenarios. Firstly, the original bone–femur interface of Journey PFJ®, with four fixation pins, was modelled. Secondly, four alternative models were developed: (i) model with two pins; (ii) model without pins; (iii) model with new pin design; (iv) model with increased thickness. The behaviour of the five models was evaluated and compared. Validation against experimental data was also performed. Results showed that the elastic strain is two to three times lower on bone areas close to the pins, in the post-implantation scenario, which is most likely due to a stress-shielding effect. In a long-term scenario, bone rupture by fatigue may occur, associated with an increase in elastic strains. This effect is particularly noticed in the implants supported by fixation pins. In addition, contact analyses evidenced that implant stability is best promoted without fixation pins. Such outcomes suggest that the alternative implant without fixation pins on the bone–femur interface can improve the protection of the femur after patellofemoral arthroplasty, assuming good cement fixation throughout the implant’s lifetime.

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“…Most finite element (FE) models that study implant behavior assume the bone-implant interface to be either perfectly bonded or fully sliding (Gupta et al, 2010;Tomaszewski et al, 2010;Chou et al, 2014;Demenko et al, 2016;Rittel et al, 2017;Mondal and Ghosh, 2019). While perfectly bonded contact conditions do not allow for debonding to occur, interface behavior that is modeled as frictionless or by classical Coulomb's friction cannot fully represent the non-linear interface behavior of the bone-implant interface before nor after osseointegration occurs (Dammak et al, 1997;Viceconti et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Modeling the debonding process of osseointegrated implants due to coupled adhesion and friction

Immel,

Nguyen,

Haiat

et al. 2021

Preprint

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Cementless implants have become widely used for total hip replacement surgery. The long-term stability of these implants is achieved by bone growing around and into the porous surface of the implant, a process called osseointegration. However, debonding of the bone-implant interface can still occur due to aseptic implant loosening and insufficient osseointegration, which may have dramatic consequences. The aim of this work is to describe a new 3D finite element frictional contact formulation for the debonding of partially osseointegrated implants. The contact model is based on a modified Coulomb's friction law (Immel et al, 2020) that takes into account the tangential debonding of the bone-implant interface. This model is extended in the direction normal to the bone-implant interface by considering a cohesive zone model, to account for adhesion phenomena in the normal direction and for adhesive friction of partially bonded interfaces. The model is applied to simulate the debonding of an acetabular cup implant. The influence of partial osseointegration and adhesive effects on the long-term stability of the implant is assessed. The influence of different patient-and implant-specific parameters such as the friction coefficient µ b , the trabecular Young's modulus E b and the interference fit IF is also analyzed, in order to determine the optimal stability for different configurations. Furthermore, this work provides guidelines for future experimental and computational studies, that are necessary for further parameter calibration.

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Prognosis of implant longevity in terms of annual bone loss: a methodological finite element study

Cited by 16 publications

References 36 publications

Bite force and dental implant treatment: a short review

Bite force and dental implant treatment: a short review

Modelling and simulation of alternative designs for the femur–implant interface of Journey patellofemoral prosthesis

Modeling the debonding process of osseointegrated implants due to coupled adhesion and friction

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