Application of finite element analysis in implant dentistry: A review of the literature

Geng, Jinkun; Tan, Kong-Bing; Liu, Guirong

doi:10.1067/mpr.2001.115251

Cited by 835 publications

(720 citation statements)

References 63 publications

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“…where the axial component of resistive force during loosening r L F is given by equation (8). The efficiency of TIS connection is defined as the ratio of the loosening torque to the tightening torque,…”

Section: Loosening Torquementioning

confidence: 99%

“…7 Screw complications, such as loosening, had been encountered with the screw-type implantabutment connection mechanism, in particular in single tooth replacement scenarios. 8,9 Inadequate preload, the misfit of the mating components and rotational characteristics of the screws were considered to be the reasons leading to screw loosening or fracture. 9 Design improvements and using gold, as screw material, resulted in significant improvements 1 in the loosening incidences encountered early on, in systems using titanium retention screws 10,11 .…”

Section: Introductionmentioning

confidence: 99%

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Mechanics of the taper integrated screwed-in (TIS) abutments used in dental implants

Bozkaya

Müftü

2005

Journal of Biomechanics

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The tapered implant-abutment interface is becoming more popular due to the mechanical reliability of retention it provides. Consequently, understanding the mechanical properties of the tapered interface with or without a screw at the bottom has been the subject of a considerable amount of studies involving experiments and finite element (FE) analysis. This paper focuses on the tapered implant-abutment interface with a screw integrated at the bottom of the abutment. The tightening and loosening torques are the main factors in determining the reliability and the stability of the attachment.Analytical formulas are developed to predict tightening and loosening torque values by combining the equations related to the tapered interface with screw mechanics equations.This enables the identification of the effects of the parameters such as friction, geometric properties of the screw, the taper angle, and the elastic properties of the materials on the mecha nics of the system. In particular, a relation between the tightening torque and the screw pretension is identified. It was shown that the loosening torque is smaller than the tightening torque for typical values of the parameters. Most of the tightening lo ad is carried by the tapered section of the abutment, and in certain combinations of the parameters the pretension in the screw may become zero. The calculations performed to determine the loosening torque as a percentage of tightening torque resulted in the range 85-137%, depending on the values of taper angle and the friction coefficient.

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Section: Loosening Torquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanics of the taper integrated screwed-in (TIS) abutments used in dental implants

Bozkaya

Müftü

2005

Journal of Biomechanics

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“…4,5 It is showing overwhelming capability and versatility in its application in dentistry. [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] This paper reviews past and current practices in the finite element analysis of dental implants. The achievements and limitations of the existing analysis are discussed and the gap in research is identified.…”

Section: Introductionmentioning

confidence: 99%

Application of the finite element method in dental implant research

Staden

Guan

Loo

2006

Computer Methods in Biomechanics and Biomedical Engineering

222

139

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This article provides a review of the achievements and advancements in dental technology brought about by computer-aided design and the all powerful finite element method of analysis. The scope of the review covers dental implants, jawbone surrounding the implant and the biomechanical implant and jawbone interaction. Prevailing assumptions made in the published finite element analysis, and their limitations are discussed in some detail which helps identify the gaps in research as well as future research direction.

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“…It is a computer-based method used to calculate and visually represent stresses and strains in complex structures subjected to simulated loads [4,5]. Three-dimensional finite element stress analysis has been extensively used to study the biomechanics of dental implants and offers many advantages over other methods [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Stresses Around Dental Implants Placed in Normal and Fibula Reconstructed Mandibular Models using Finite Element Analysis

Nesappan

Ariga

2014

JCDR

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Purpose: This study was formulated to evaluate and compare stresses around endosseous implants in various normal and fibula reconstructed mandibular models using finite element analysis method. Materials and Methods:CT scan data of a completely edentulous patient and a fibula reconstructed patient was made and the Dicom images were used to design 3-D mandibular models using software. Based on the information from the scan data, various types of reconstructed FEA models were made. Implants (fixtures) and superstructures were then embedded in each model and Von Mises stress around the neck of each implant under a vertical loading of 200 N and Horizontal load of 50 N was calculated using finite element structural analysis software. The results were compared between the reconstructed mandible and their respective normal mandible. Results:Higher stress values were obtained for all the reconstructed types under horizontal loading and in reconstructed models involving larger area of reconstruction the stress were more. In the models involving smaller area of reconstruction like symphysis alone or body alone there is no significant change in the stress values on vertical loading. Conclusion:Stresses were comparatively smaller in mandibles involving a smaller area of reconstruction. Hence, fixed prosthesis could be advised and a bar retained over denture for reconstruction for larger area of reconstruction.Thiyaneswaran nesappan 1 , padma ariga 2

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Application of finite element analysis in implant dentistry: A review of the literature

Cited by 835 publications

References 63 publications

Mechanics of the taper integrated screwed-in (TIS) abutments used in dental implants

Mechanics of the taper integrated screwed-in (TIS) abutments used in dental implants

Application of the finite element method in dental implant research

Comparison of Stresses Around Dental Implants Placed in Normal and Fibula Reconstructed Mandibular Models using Finite Element Analysis

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