The effectiveness of a new algorithm on a three‐dimensional finite element model construction of bone trabeculae in implant biomechanics

Sato, Yuuji; Teixeira, Eduardo Rolim; Tsuga, Kazuhiro; Shindoi, N.

doi:10.1046/j.1365-2842.1999.00442.x

Cited by 25 publications

(21 citation statements)

References 6 publications

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“…[12] According to Sato et al . [13] in a 3D finite element study, variation in bone stress around an implant were negligible if the length of bone between the modeled implant and the bone segment end was at least 4.2 mm. Therefore, the length of the modeled bone segment was 12.5 mm.…”

Section: Discussionmentioning

confidence: 99%

Impact of implant diameter and length on stress distribution in osseointegrated implants: A 3D FEA study

Eazhil¹,

Swaminathan²,

Gunaseelan³

et al. 2016

J Int Soc Prevent Communit Dent

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Aims and Objectives:Dimension of dental implant is an important parameter which has a considerable impact on the biomechanical load transfer characters and its prognosis. Excessive stress in the bone–implant interface may result in the failure of the implant. The aim of this study was to evaluate the impact of implant diameter and length on neighboring tissues around the implant. The results of the study will help in developing a scientific methodology to select appropriate implant diameter and length.Materials and Methods:In this study, tapered implants of different diameter and length were numerically analyzed using bone–implant models developed from computed tomography generated images of mandible with osseointegrated implants. The impact of various diameters on stress distribution was examined using implants with a length of 13 mm and diameters of 3.5 mm, 4.3 mm and 5.0 mm. Implants with a diameter of 4.3 mm and lengths of 10 mm, 13 mm, 16 mm was developed to examine the impact of various implant length. All materials were assumed to be linearly elastic and isotropic. Masticatory load was applied in a natural direction, oblique to the occlusal plane. The Statistical Package for the Social Sciences software package was used for statistical analysis.Results:Maximum von Mises stresses were located around the implant neck. It was demonstrated that there was statistically significant decrease in von Mises stress as the implant diameter increased.Conclusion:Within the limitations of this study there was statistically significant decrease in von Mises stress as the implant diameter increased.

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Section: Discussionmentioning

confidence: 99%

Impact of implant diameter and length on stress distribution in osseointegrated implants: A 3D FEA study

Eazhil¹,

Swaminathan²,

Gunaseelan³

et al. 2016

J Int Soc Prevent Communit Dent

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“…The downsized elements were used at the locations where the higher stress level was expected. Sato et al . (1999) established a new algorithm for three‐dimensional FEA bone trabeculae models without downsizing the elements.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of design parameters of osseointegrated dental implants using finite element analysis

Chun

Cheong

Han

et al. 2002

J of Oral Rehabilitation

228

178

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Finite element analyses were performed for various shapes of dental implant to study effects on stress distribution generated in the surrounding jaw bone and to determine an optimal thread shape for even stress distribution. It was found that the square thread shape filleted with a small radius was more effective on stress distribution than other dental implants used in the analyses. Additional analyses were performed on the implant with the thread shape obtained from previous analyses for varying other design parameters, such as the width of thread end and height of thread for various load directions, to determine the optimal dimensions of the implant. Stress distribution was more effective in the case when the width of thread end and the height of thread were 0.5p and 0.46p, respectively, where p is the screw pitch. Then, using the optimal implant thread dimensions determined previously, stress analyses were performed with various screw pitches and implant lengths, to investigate effects on stress distribution and to find the way to reduce the maximum effective stress generated in the jaw bone. Results show that the maximum effective stress decreased not only as screw pitch decreased gradually but also as implant length increased.

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“…As a matter of fact, actual experimental techniques and clinical trials should follow to establish the true nature of the biologic system and therefore further investigations are required [49].…”

Section: Implant-abutment Stressmentioning

confidence: 99%

Study of Biomechanics of Porous Coated Root Form Implant Using Overdenture Attachment: A 3D FEA

Savadi

Goyal

2010

J Indian Prosthodont Soc

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The purpose of this article is to do a three-dimensional finite element stress analysis, in relation to root form implant supported by overdenture attachment, during axial and non-axial loading. Two porous coated Titanium-aluminum-vanadium (Ti-6Al-4V) implants with overdenture abutment were embedded in both simple and 3D model of interforaminal region of mandible. The material properties of tissue ingrowth bonded interface were calculated considering Iso-Strain condition. The masticatory forces: axial load of 35 N, a horizontal load of 10 N, and an oblique load of 120 N, was applied for the two qualities of cancellous bone. It implied that porous topography of the implant led to optimal stress transfer at the tissue ingrowth bonded interface and insignificant punching stress at the apex than a smooth surface implant. The inferior bone quality was deformed even under physiologic loads and showed wider stress pattern. Simulated implant abutment to implant bone interface stress may be significantly affected by the quality of the bone and the surface topography of the implant. The interface is affected to a lesser extent by the prosthetic material properties. Threedimensional anatomical model was more close to reality than the geometry of much simpler altered models.

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The effectiveness of a new algorithm on a three‐dimensional finite element model construction of bone trabeculae in implant biomechanics

Cited by 25 publications

References 6 publications

Impact of implant diameter and length on stress distribution in osseointegrated implants: A 3D FEA study

Impact of implant diameter and length on stress distribution in osseointegrated implants: A 3D FEA study

Evaluation of design parameters of osseointegrated dental implants using finite element analysis

Study of Biomechanics of Porous Coated Root Form Implant Using Overdenture Attachment: A 3D FEA

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