The Effect of Different Implant-Abutment Mis-Matches on Stress Distribution: A 3-Dimensional Finite Element Study

2021 ◽  
Author(s):  
Douglas Albert Deporter ◽  
Vahid Esfahanian ◽  
Armin khosravi ◽  
Mohammad Ketabi
Keyword(s):  
Finite Element ◽  
Bone Density ◽  
Marginal Bone Loss ◽  
3 Dimensional ◽  
Posterior Maxilla ◽  
Implant Abutment ◽  
Modeling Software ◽  
Dimensional Finite Element ◽  
Platform Switching ◽  
Element Study

Platform-switching reduces peri-implant marginal bone loss (MBL), and the aim of this study was to compare the effect of platform-switching on stress within crestal bone using different implant-abutment mis-matches (0.65 and 1mm) under two different vertical loads (30 N vs 200 N) for implants placed in posterior jaw sites. 3-D modeling software was used for an implant of 4.5mm diameter and 13mm length. Molars were modeled using CT images of bone density in human maxilla (D3 bone) and mandible (D2 bone). Collected data were analyzed using CATIA software. In posterior mandible, stress of 30 N force with platform mis-matches of 0.65 or 1mm were 2.920 and 2.440 MPa respectively. Using 200 N force, values increased to 19.44 and 16.30 MPa. In posterior maxilla and 30 N force, stresses with mis-matches of 0.65 and 1mm were 3.77 and 3.18 MPa respectively increasing to 25.14 & 20.17 with 200 N force. The effect can be predicted to be greatest as the mis-match increases with implants placed into lower quality bone (posterior maxilla with D3 quality).

Stress Analysis in Platform-Switching Implants: A 3-Dimensional Finite Element Study

2012 ◽  
Vol 38 (5) ◽  
pp. 587-594 ◽  
Author(s):  
Eduardo Piza Pellizzer ◽  
Fellippo Ramos Verri ◽  
Rosse Mary Falcón-Antenucci ◽  
Joel Ferreira Santiago Júnior ◽  
Paulo Sérgio Perri de Carvalho ◽  
...  
Keyword(s):  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
3 Dimensional ◽  
Finite Element Study ◽  
Significant Difference ◽  
Implant Abutment ◽  
Dimensional Finite Element ◽  
Platform Switching ◽  
Element Study

The aim of this study was to evaluate the influence of the platform-switching technique on stress distribution in implant, abutment, and peri-implant tissues, through a 3-dimensional finite element study. Three 3-dimensional mandibular models were fabricated using the SolidWorks 2006 and InVesalius software. Each model was composed of a bone block with one implant 10 mm long and of different diameters (3.75 and 5.00 mm). The UCLA abutments also ranged in diameter from 5.00 mm to 4.1 mm. After obtaining the geometries, the models were transferred to the software FEMAP 10.0 for pre- and postprocessing of finite elements to generate the mesh, loading, and boundary conditions. A total load of 200 N was applied in axial (0°), oblique (45°), and lateral (90°) directions. The models were solved by the software NeiNastran 9.0 and transferred to the software FEMAP 10.0 to obtain the results that were visualized through von Mises and maximum principal stress maps. Model A (implants with 3.75 mm/abutment with 4.1 mm) exhibited the highest area of stress concentration with all loadings (axial, oblique, and lateral) for the implant and the abutment. All models presented the stress areas at the abutment level and at the implant/abutment interface. Models B (implant with 5.0 mm/abutment with 5.0 mm) and C (implant with 5.0 mm/abutment with 4.1 mm) presented minor areas of stress concentration and similar distribution pattern. For the cortical bone, low stress concentration was observed in the peri-implant region for models B and C in comparison to model A. The trabecular bone exhibited low stress that was well distributed in models B and C. Model A presented the highest stress concentration. Model B exhibited better stress distribution. There was no significant difference between the large-diameter implants (models B and C).

scholarly journals Efficacy of different designs of mandibular expanders: A 3-dimensional finite element study

2020 ◽  
Vol 157 (5) ◽  
pp. 641-650
Author(s):  
Tao Shen ◽  
Bingjing Zhao ◽  
Chao Wang ◽  
Yihan Xiao ◽  
Yichen Han ◽  
...  
Keyword(s):  
Finite Element ◽  
3 Dimensional ◽  
Finite Element Study ◽  
Dimensional Finite Element ◽  
Element Study

scholarly journals Evaluation of the effect of an offset implant configuration in the posterior maxilla with external hexagon implant platform: A 3-dimensional finite element analysis

2017 ◽  
Vol 118 (3) ◽  
pp. 363-371 ◽  
Author(s):  
Victor Eduardo de Souza Batista ◽  
Fellippo Ramos Verri ◽  
Daniel Augusto de Faria Almeida ◽  
Joel Ferreira Santiago Junior ◽  
Cleidiel Aparecido Araújo Lemos ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
3 Dimensional ◽  
Posterior Maxilla ◽  
Dimensional Finite Element

Effects of Different Abutment Connection Designs on the Stress Distribution Around Five Different Implants: A 3-Dimensional Finite Element Analysis

2012 ◽  
Vol 38 (S1) ◽  
pp. 491-496 ◽  
Author(s):  
Ali Balik ◽  
Meltem Ozdemir Karatas ◽  
Haluk Keskin
Keyword(s):  
Finite Element ◽  
Static Solution ◽  
Virtual Design ◽  
Element Analysis ◽  
3 Dimensional ◽  
Implant Abutment ◽  
Connection System ◽  
Dimensional Finite Element ◽  
Favorable Clinical Outcome ◽  
The Stability

The stability of the bone-implant interface is required for the long-term favorable clinical outcome of implant-supported prosthetic rehabilitation. The implant failures that occur after the functional loading are mainly related to biomechanical factors. Micro movements and vibrations due to occlusal forces can lead to mechanical complications such as loosening of the screw and fractures of the abutment or implants. The aim of this study was to investigate the strain distributions in the connection areas of different implant-abutment connection systems under similar loading conditions. Five different implant-abutment connection designs from 5 different manufacturers were evaluated in this study. The investigation was performed with software using the finite element method. The geometrical modeling of the implant systems was done with CATIA virtual design software. The MSC NASTRAN solver and PATRAN postprocessing program were used to perform the linear static solution. According to the analysis, the implant-abutment connection system with external hexagonal connection showed the highest strain values, and the internal hexagonal implant-abutment connection system showed the lowest strain values. Conical + internal hexagonal and screw-in implant abutment connection interface is more successful than other systems in cases with increased vertical dimension, particularly in the posterior region.

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