Importance of the Meshing Accuracy for Stress Evaluation in All-Ceramic Restored Teeth

2013 ◽  
Vol 404 ◽  
pp. 112-117
Author(s):  
Sorin Porojan ◽  
Florin Topală ◽  
Liliana Porojan
Keyword(s):  
Finite Element ◽  
Design Method ◽  
In Vitro Study ◽  
Material Behavior ◽  
Element Analysis ◽  
All Ceramic ◽  
Distribution Of Stress ◽  
Ceramic Restorations

The fracture resistance of all-ceramic restorations is one of the major concerns in clinical applications of these materials. An in vitro study can help to estimate the in vivo behavior of a new dental material and design method. The FEM (finite element method) seems to be a proper tool to study material behavior in relation to their composition, relationship and geometry, by analyzing the distribution of stress. The purpose of this study was to evaluate, by finite element analysis, the importance of meshing accuracy on stresses induced in all-ceramic restored teeth during protrusion loading. For the experimental analysis, a 3D model of a central incisor was achieved: intact teeth, unrestored teeth with chamfer marginal preparation, the same tooth restored with full pressed ceramic crown. Stress analysis was performed on the restored incisor during protrusion. To evaluate the importance of the meshing accuracy for stresses in all-ceramic restored teeth three kinds of meshing options were chosen: coarse, medium and fine. For the analysis choosing of the proper meshing options is essential for accurate results. The medium meshing is enough to obtain favorable results.

scholarly journals Three-Dimensional Finite Element Analysis to Evaluate Stress Distribution in Tooth and Implant-Supported Fixed Partial Denture–An In Vitro Study

2020 ◽  
Vol 8 (03) ◽  
pp. 084-091
Author(s):  
Himani Jain ◽  
Tarun Kalra ◽  
Manjit Kumar ◽  
Ajay Bansal ◽  
Deepti Jain
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Alveolar Bone ◽  
Three Dimensional ◽  
In Vitro Study ◽  
Stress Concentrations ◽  
Element Analysis ◽  
Three Dimensional Finite Element

Abstract Introduction This study was undertaken to assess the influence of different superstructure materials, when subjected to occlusal loading, on the pattern of stress distribution in tooth-supported, implant-supported, and tooth implant-supported fixed partial prostheses, using the finite element analysis with a comparative viewpoint. Materials and Methods The geometric models of implant and mandibular bone were generated. Three models were created in accordance with the need of the study. The first model was given a tooth-supported fixed partial prosthesis. The second model was given tooth implant-supported fixed partial prosthesis, and the third model was given implant-supported fixed partial prosthesis. Forces of 100 N and 50 N were applied axially and buccolingually, respectively. Results The present study compared the stresses arising in the natural tooth, implant, and the whole prostheses under simulated axial and buccolingual loading of three types of fixed partial dentures, namely, tooth-supported, tooth implant-supported, and implant-supported fixed partial dental prostheses using three different types of materials. Conclusion The pattern of stress distribution did not appear to be significantly affected by the type of prosthesis materials in all models. The maximum stress concentrations were found in the alveolar bone around the neck of the teeth and implants.

Isolating the effects of equine hoof shape measurements on capsule strain with finite element analysis

2003 ◽  
Vol 16 (02) ◽  
pp. 67-75 ◽  
Author(s):  
H. L. McClinchey ◽  
J. C. Jofriet ◽  
J. J. Thomason
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Finite Element Methods ◽  
In Vivo Studies ◽  
Finite Element Models ◽  
Element Analysis ◽  
Toe Angle ◽  
Equine Hoof

SummaryThe shape of the equine hoof capsule affects how weightbearing forces are resisted by the capsule and are transmitted to deeper structures within the hoof. Our aim was to isolate the effects of several measurements describing hoof shape on strains and stresses in the hoof capsule. Multiple finite-element models are constructed with toe angles in the range 42° to 58°, heel angles from 34° to 50°, toe lengths of 8.5 to11.5 cm, and medial and lateral angles from 68° to 83°. Strain at the toe is inversely related to toe angle, and not strongly affected by heel angle; it increases with toe length distally on the toe, but decreases near the coronary border. Varying medial and lateral angles show that more upright walls have less strain at the quarters. This study demonstrates the effectiveness of finite element methods in complementing in vitro and in vivo studies of hoof mechanics.

scholarly journals Evaluation of wear characteristics of natural teeth opposing all-ceramic restorations: An in vitro study

2018 ◽  
Vol 4 (3e) ◽  
pp. 287-292
Author(s):  
Jayasree Komala ◽  
Sudhakar Reddy T ◽  
Subhasri Kandhati ◽  
Keerthi Edulapalli
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Wear Characteristics ◽  
All Ceramic ◽  
Natural Teeth ◽  
Ceramic Restorations

scholarly journals Predicting Trabecular Bone Stiffness from Clinical Cone-Beam CT and HR-pQCT Data; an In Vitro Study Using Finite Element Analysis

PLoS ONE ◽  
2016 ◽  
Vol 11 (8) ◽  
pp. e0161101 ◽  
Author(s):  
Eva Klintström ◽  
Benjamin Klintström ◽  
Rodrigo Moreno ◽  
Torkel B. Brismar ◽  
Dieter H. Pahr ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Trabecular Bone ◽  
Cone Beam Ct ◽  
In Vitro Study ◽  
Vitro Study ◽  
Cone Beam ◽  
Element Analysis ◽  
Bone Stiffness

Effect of Polylactic Acid/Hydroxyapatite Coating on Dental Implant Using Finite Element Method

2020 ◽  
Vol 995 ◽  
pp. 103-108
Author(s):  
Hassan Mas Ayu ◽  
M.M. Mustaqieem ◽  
Rosdi Daud ◽  
A. Shah ◽  
Andril Arafat ◽  
...  
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Dental Implant ◽  
Bonding Strength ◽  
Load Condition ◽  
Implant Design ◽  
Element Analysis ◽  
Improve Design

Finite element analysis (FEA) has been proven to be a precise and applicable method for evaluating dental implant systems. This is because FEA allows for measurement of the stress distribution inside of the bone and various dental implant designs via simulation analysis during mastication where such measurements are impossible to perform in-vitro or in-vivo experiment. That is why the relationship between implant design and load distribution at the implant bone interface is a crucial issue to understand. This research study focuses on a static simulation and bonding strength for PLA/HA coating on V thread design of dental implant using three-dimensional finite element. The average masticatory muscle that involves in human biting such as X, Y and Z direction will be used to simulate force with load condition of 17.1N, 114.6N and 23.4N respectively. Based on result obtained, the coated dental implant model is more compatible than uncoated model due to lower maximum stress which is reduce about 16%. The coated model also shows lower deformation and higher bonding strength. Outcomes from this research provide a better understanding of stress distribution characteristics that would be useful in order to improve design of dental implant thread and evaluation of the PLA/HA bonding strength applied.

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