Selection of dental implants based on masticatory load of the patient: A novel approach

Kumararama, Sindhu Sudhakar; Chowdhary, Ramesh

doi:10.4103/ijdr.ijdr_124_16

Cited by 9 publications

(7 citation statements)

References 2 publications

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“…Abutment type has significant influence on the stress distribution because of different load transfer mechanisms and the differences in size of contact area between the abutment and implant Heoung jae et al have concluded that the internal hex abutment generated the least von mises stress for all the loading condition so straight abutments with internal hex were used in this study (13). In Normal masticatory function, occlusal loads cover a range of values from 15 to 50 N so 3 different forces were used with different direction of application of force to stimulate the dynamic nature of the forces generated in the mouth (14,15).…”

Section: Discussionmentioning

confidence: 99%

Finite element analysis of stress concentration between surface coated implants and non surface coated implants - An in vitro study

et al. 2019

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BackgroundTo determine qualitative comparison in stress distribution between surface coated implants and non surface coated implants using 2 different lengths and vertical, oblique, and lateral forces.Material and Methods3 dimensional finite element study was carried out at first molar site with 4 surface coated and 4 non surface coated implants using mimic 8.11, solid edge 2004, hypermesh 9.0, and ansys12.1 software.ResultsThe pattern of stress distribution was almost similar between vertical and oblique loading but varied with lateral loads between surface coated and non surface coated implants. As the length of the implants increased stress concentration had no significant variation between surface coated and non surface coated implants, but had a tendency to increase at the abutment and abutment screw on all 3 forces.ConclusionsAmong the surface coated and non surface implants the pattern of stress distribution was similar signifying that surface coating of implants had no significant role in stress distribution using 3d finite element analysis and within the limitations of this study. Key words:Surface coating, non surface coating, implants, stress and bone.

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Section: Discussionmentioning

confidence: 99%

Finite element analysis of stress concentration between surface coated implants and non surface coated implants - An in vitro study

et al. 2019

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“…The knowledge of the masticatory mechanism forces on the system of prosthesis over implant is crucial for failure prevention [4][5][6]. When an implant-supported prosthesis is submitted to a certain load [6][7][8], it promotes bone remodeling [6,9].…”

Section: Introductionmentioning

confidence: 99%

“…Firstly, using a 2D model [6,13] and from the 80's until today, 3D models [2,3,14] have been used to develop and improve this tool for the study of biomechanical behavior of prostheses and implants.…”

Section: Introductionmentioning

confidence: 99%

Stress and strain distributions on short implants with two different prosthetic connections – an in vitro and in silico analysis

Tribst

Piva

Rodrigues

et al. 2017

BDS

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101 ResumoObjetivo: Uma biomecânica ideal que minimiza a tensão entre implante e osso pode proporcionar sucesso para implantes osseointegrados. Este estudo avaliou a concentração de deformação no tecido circundante e a tensão nos componentes de dois implantes com diferentes conexões protéticas através de métodos in vitro e in silico. Material e Métodos: Vinte blocos de poliuretano foram divididos em dois grupos (n = 10), seguido da instalação de hexágono interno (IH) (AS Tecnologia -Titanium Fix, São José dos Campos, Brasil) ou de implantes cone morse (LT) (Bicon Dental Implants). Para o método da extensometria (SG), foram colocados quatro sensores ao redor dos implantes. Para a análise por elementos finitos (FEA), o mesmo bloco foi modelado e analisado. Foi aplicada uma carga axial (30 kgf) para ambas as metodologias. Os valores de tensão e deformação foram analisados quanto à correlação com o SG. Resultados: Para SG, LT apresentou uma média de deformação mais agressiva (-932) que IH (-632). Para FEA, a LT mostrou menor tensão (-547) que IH (-1169). Conclusão: Para os dois sistemas implantes, os valores de microdeformação capazes de induzir remodelação óssea indesejada não foram medidos. No entanto, para o implante IH, a presença de um parafuso de retenção tem a desvantagem de concentrar a tensão, enquanto um pilar sólido dissipa a carga axial através do implante, o que sugere um melhor desempenho para o grupo LT. ABsTRACTObjective: An ideal biomechanics minimizes the stress between implant and bone that can provide success for osseointegrated implants. This study evaluated the strain concentration in surrounding tissue and stress in the components of two implants with different prosthetic connections through an in vitro and in silico methods. Methods: Twenty polyurethane blocks were divided into two groups (n=10) followed by the installation of internal hexagon (IH) (AS Technology -Titanium Fix, São José dos Campos, Brazil) or locking taper implants (LT) (Bicon Dental Implants). For strain gauge (SG) method, four sensors were placed around the implants. For finite element analysis (FEA), the same block was modeled and analyzed. An axial load (30 kgf) was applied for both methodologies. The values of stress and strain were analyzed for correlation to SG. Results: For SG, LT presented a mean of strain most aggressive (-932) than IH (-632). For FEA, LT showed less stress (-547) then IH (-1169). Conclusion: For two implant's system, microstrain values capable to induce unwanted bone remodeling were not measured. However, for IH implant, the presence of a retention screw has the disadvantage to concentrate stress while a solid abutment dissipates the axial load through the implant that suggests a better performance for LT group.

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“…Holmgren et al reported that the wider the maximum diameter of a dental implant thread, the smaller the maximum equivalent stress, resulting in more effective stress distribution [28][29][30][31]. During masticatory movements, our teeth are subjected to combined loads, and torsional loading is one of the primary causes of dental implant failure [32,33]. Therefore, in this study, the maximum torque and weak points in dental implant structures to torsional loading were set as the QOI, and the structural stability of dental implants was investigated under COU.…”

Section: Part 1: Dental Implantsmentioning

confidence: 99%

Validation of the Finite Element Model versus Biomechanical Assessments of Dental Implants and Total Knee Replacements

Kang,

Park,

Ahn

et al. 2023

Bioengineering

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Computer modeling and simulation (CM&S) technology is widely used in the medical device industry due to its advantages such as reducing testing time and costs. However, the developer’s parameter settings during the modeling and simulation process can have a significant impact on the results. This study developed a test model for the rotational shear strength of dental implants and the constraint force of total knee replacements based on CM&S technology and proposes ideal parameters to ensure reliability. For dental implants, the load area and sliding contact conditions were considered, and for total knee replacements, the friction coefficient, medial–lateral displacement, valgus–varus rotation, and elastic modulus were considered. By comparing the simulation results and mechanical tests, boundary conditions with an error rate of less than 1.5% were selected. When a jig (gripper and collector) was applied with the same boundary conditions, an error rate of 48~22% occurred; otherwise, it was confirmed that the error rate was within 10~0.2%. The FE model was verified with an error of 2.49 to 3% compared to the mechanical test. The friction coefficient variable had the greatest influence on the results, accounting for 10 to 13%, and it was confirmed that valgus–varus rotation had a greater influence on the results than medial–lateral displacement. Relatively, the elastic modulus of the insert had the least effect on the results. These research results are expected to make CM&S techniques useful as a medical device digital development tool (M3DT) in the development of total knee replacements and dental implants.

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Selection of dental implants based on masticatory load of the patient: A novel approach

Cited by 9 publications

References 2 publications

Finite element analysis of stress concentration between surface coated implants and non surface coated implants - An in vitro study

Finite element analysis of stress concentration between surface coated implants and non surface coated implants - An in vitro study

Stress and strain distributions on short implants with two different prosthetic connections – an in vitro and in silico analysis

Validation of the Finite Element Model versus Biomechanical Assessments of Dental Implants and Total Knee Replacements

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