Finite Element Analysis and Experimental Investigations on Stress Distribution of Dental Implants around Implant-Bone Interface

Dhatrak, Pankaj; Shirsat, Uddhav; Sumanth, S.; Deshmukh, Vijay

doi:10.1016/j.matpr.2017.12.157

Cited by 49 publications

(19 citation statements)

References 5 publications

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“…The finite element analysis is a useful aid for the assessment of stress rising in the bone due to the presence of prosthetic devices. It represents an easy way to investigate complex biomechanical systems instead of experimental techniques that are difficult to apply [14,15]. To perform a reliable simulation, several fundamental parameters have to be taken into account, such as the bone tissues material model, the state of osseointegration of the implant, and the preload of the internal screw.…”

Section: Discussionmentioning

confidence: 99%

Prosthetic and Mechanical Parameters of the Facial Bone under the Load of Different Dental Implant Shapes: A Parametric Study

et al. 2019

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In recent years the science of dental materials and implantology have taken many steps forward. In particular, it has tended to optimize the implant design, the implant surface, or the connection between implant and abutment. All these features have been improved or modified to obtain a better response from the body, better biomechanics, increased bone implant contact surface, and better immunological response. The purpose of this article, carried out by a multidisciplinary team, is to evaluate and understand, through the use also of bioengineering tests, the biomechanical aspects, and those induced on the patient's tissues, by dental implants. A comparative analysis on different dental implants of the same manufacturer was carried out to evaluate biomechanical and molecular features. Von Mises analysis has given results regarding the biomechanical behavior of these implants and above all the repercussions on the patient's tissues. Knowing and understanding the biomechanical characteristics with studies of this type could help improve their characteristics in order to have more predictable oral rehabilitations.

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Section: Discussionmentioning

confidence: 99%

Prosthetic and Mechanical Parameters of the Facial Bone under the Load of Different Dental Implant Shapes: A Parametric Study

et al. 2019

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“…The novelty of this study is the direct calculation of the ISQ stability values from the FEA simulated micro mobility result. Scientific studies analyses numerical methods to simulate the stress distribution around dental implants [34][35][36][37][38][39][40][41] but these stress results do not give any comparable information about the actual stability of the implant. It is not possible to determine direct form the simulated stress distribution the clinically used ISQ values.…”

Section: Discussionmentioning

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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“…All materials used in FEA were assumed as homogenous, linearly elastic, and isotropic ( Table 1 ). 15 , 16 The bone and implant was considered as complete osseointegration, and the interface of bone-implant was defined as the bonded contact. 17 In all models, the tetrahedral solid element was adopted for the mesh.…”

Section: Methodsmentioning

confidence: 99%

The effect of implant neck microthread design on stress distribution of peri-implant bone with different level: A finite element analysis

Jin

Peng

2020

Journal of Dental Sciences

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Background/purpose Significant research has proposed that the implant with microthread in the neck can significantly reduce marginal bone loss, but whether it is consistent in the condition of marginal bone loss is still unknown. The objective of this study is to investigate the effect of microthread on stress distribution in peri-implant bone with different bone level using finite element analysis. Materials and methods A series of computational models of mandible segments with different bone resorption and implant models with or without microthread in the neck was installed by computer-aided design software. The simulated occlusal force of 150N was applied buccolingually on the top center point of implant. The FEA was performed, and the von Mises stress, principal stress and shear stress in peri-implant bone were recorded and analyzed. Results In all models, the T-neck group exhibits higher von Mises stress and principal stress, as well as lower shear stress than S-neck group. Three types of stresses increase with the depth of bone resorption developed, but the differences of shear stress between two groups of implants were gradually decreased. Conclusion The micro-thread design in implant neck can reduce marginal bone loss by decreasing shear stress in peri-implant bone, but this effect is gradually weakened with the decline of the marginal bone level.

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Finite Element Analysis and Experimental Investigations on Stress Distribution of Dental Implants around Implant-Bone Interface

Cited by 49 publications

References 5 publications

Prosthetic and Mechanical Parameters of the Facial Bone under the Load of Different Dental Implant Shapes: A Parametric Study

Prosthetic and Mechanical Parameters of the Facial Bone under the Load of Different Dental Implant Shapes: A Parametric Study

Calculating ISQ Primary Stability of a Dental Implant through Micromotion

The effect of implant neck microthread design on stress distribution of peri-implant bone with different level: A finite element analysis

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