Influence of fiber insertion and different material type on stress distribution in endocrown restorations: a 3D-FEA study

2021 ◽  
pp. 1-11
Author(s):  
Gulhan Yildirim ◽  
Cihan Demir ◽  
Melahat Çelik Güven ◽  
Osman Koç ◽  
Evrim Eligüzeloglu Dalkiliç
Keyword(s):  
Stress Distribution ◽  
Material Type ◽  
3D Fea

scholarly journals Influence of implant-abutment angulations and crown material on stress distribution on central incisor: a 3D FEA

2015 ◽  
Vol 14 (4) ◽  
pp. 323-329 ◽  
Author(s):  
Mohamed I. El-Anwar ◽  
Khairy E. AL-Azrag ◽  
Mohamed H. Ghazy ◽  
Lamia E. Dawood
Keyword(s):  
Stress Distribution ◽  
Central Incisor ◽  
Implant Abutment ◽  
3D Fea

scholarly journals Stress distribution & deflection in an Aramany class II obturator fabricated with cobalt-chromium & titanium alloys – 3D FEA

2019 ◽  
Vol 31 (2) ◽  
pp. 251-257 ◽  
Author(s):  
Takshil D. Shah ◽  
Y.G. Naveen ◽  
Puttaraj Kattimani ◽  
Giridhar Kamath ◽  
Kalind Shah ◽  
...  
Keyword(s):  
Stress Distribution ◽  
Titanium Alloys ◽  
Class Ii ◽  
Cobalt Chromium ◽  
3D Fea

scholarly journals A three - dimensional finite element study on the stress distribution pattern of two prosthetic abutments for external hexagon implants

2013 ◽  
Vol 07 (04) ◽  
pp. 484-491 ◽  
Author(s):  
Wagner Moreira ◽  
Caio Hermann ◽  
Jucélio Tomás Pereira ◽  
Jean Anacleto Balbinoti ◽  
Rodrigo Tiossi
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Three Dimensional ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Dimensional Finite Element ◽  
3D Fea ◽  
The One ◽  
Von Mises ◽  
Three Dimensional Finite Element

ABSTRACT Objective: The purpose of this study was to evaluate the mechanical behavior of two different straight prosthetic abutments (one- and two-piece) for external hex butt-joint connection implants using three-dimensional finite element analysis (3D-FEA). Materials and Methods: Two 3D-FEA models were designed, one for the two-piece prosthetic abutment (2 mm in height, two-piece mini-conical abutment, Neodent) and another one for the one-piece abutment (2 mm in height, Slim Fit one-piece mini-conical abutment, Neodent), with their corresponding screws and implants (Titamax Ti, 3.75 diameter by 13 mm in length, Neodent). The model simulated the single restoration of a lower premolar using data from a computerized tomography of a mandible. The preload (20 N) after torque application for installation of the abutment and an occlusal loading were simulated. The occlusal load was simulated using average physiological bite force and direction (114.6 N in the axial direction, 17.1 N in the lingual direction and 23.4 N toward the mesial at an angle of 75° to the occlusal plan). Results: The regions with the highest von Mises stress results were at the bottom of the initial two threads of both prosthetic abutments that were tested. The one-piece prosthetic abutment presented a more homogeneous behavior of stress distribution when compared with the two-piece abutment. Conclusions: Under the simulated chewing loads, the von Mises stresses for both tested prosthetic-abutments were within the tensile strength values of the materials analyzed which thus supports the clinical use of both prosthetic abutments.

scholarly journals Stress Distribution in Roots Restored with Fiber Posts and An Experimental Dentin Post: 3D-FEA

2016 ◽  
Vol 27 (2) ◽  
pp. 223-227 ◽  
Author(s):  
Hugo Henrique Diana ◽  
Juliana Santos Oliveira ◽  
Mariana Carolina de Lara Ferro ◽  
Yara T. Corrêa Silva-Sousa ◽  
Érica Alves Gomes
Keyword(s):  
Carbon Fiber ◽  
Stress Distribution ◽  
Glass Fiber ◽  
Von Mises Stress ◽  
Fiber Post ◽  
Maxillary Canine ◽  
Element Analysis ◽  
3D Fea ◽  
Glass Fiber Post ◽  
Von Mises

Abstract The aim of this study was to compare the stress distribution in radicular dentin of a maxillary canine restored with either a glass fiber post, carbon fiber post or an experimental dentin post using finite element analysis (3D-FEA). Three 3D virtual models of a maxillary canine restored with a metal-ceramic crown and glass fiber post (GFP), carbon fiber post (CFP), and experimental dentin post (DP) were obtained based on micro-CT images. A total of 180 N was applied on the lingual surface of the incisal third of each tooth at 45 degrees. The models were supported by the periodontal ligament fixed in three axes (x=y=z=0). The von Mises stress (VMS) of radicular dentin and the intracanal posts was calculated. The structures of all groups showed similar values (MPa) and distribution of maximum von Mises stress. Higher stress was found in the apical third of dentin while the posts presented homogeneous stress distribution along the axis. The fiber and dentin posts exhibited similar stress values and distribution. Thus, the experimental dentin post is a promising restorative material.

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

2016 ◽  
Vol 6 (6) ◽  
pp. 590 ◽  
Author(s):  
R Eazhil ◽  
SivaVadivel Swaminathan ◽  
Madhan Gunaseelan ◽  
GVijay Kannan ◽  
Chandrapandian Alagesan
Keyword(s):  
Stress Distribution ◽  
Osseointegrated Implants ◽  
3D Fea

scholarly journals Finite Elements Analysis of the Temporomandibular Joint Disc in Patients with Intra-articular Disorders

2020 ◽  
Author(s):  
Linfeng Lai ◽  
Guofeng Xiong ◽  
Chenyao Huang ◽  
Fan Zhou ◽  
Fujian Xia
Keyword(s):  
Friction Coefficient ◽  
Finite Elements ◽  
Stress Distribution ◽  
Temporomandibular Joint ◽  
Finite Elements Analysis ◽  
Temporomandibular Joint Disc ◽  
Fea Model ◽  
Tmj Disc ◽  
Joint Disorder ◽  
3D Fea

Abstract Background： Anterior and/or medial displacement of the temporomandibular joint disorder(TMJ) disc or intra-articular disorders( ID) is the most common form of TMJ dysfunction(TMD).TMD cause change of friction coefficient during TMJ movement. In the present study, We provided a 3D finite elements models(FEM) including the maxilla, disc and mandible and evaluated the stress distribution with different friction coefficient. Methods: 14 volunteers without TMD and 20 TMD patients,who were diagnosed by MRI, were selected.CT and MRI data were collected to build 3D FEA model of mandibular and TMJ disc.Stress distribution with different friction coefficient was measured. Result: In the normal model, stress distribution on TMJ disc was 2.07±0.17,1.49±0.14,1.41±0.14MPa with 0.001 0.3 and 0.4 friction coefficient.In TMD model,stress distribution is 3.87±0.15,7.23±0.22,7.77±0.19MPa respectively. Conclusion: When the friction coefficient of the side with anterior displacement increased, stress on the disc, condyle and mandible of the opposite side increased. Simultaneously, stress values of the disc, condyle and mandible were higher than those of the normal lateral joint.

scholarly journals Finite Elements Analysis of the Temporomandibular Joint Disc in Patients with Intra-articular Disorders

2020 ◽  
Author(s):  
Linfeng Lai ◽  
Guofeng Xiong ◽  
Chenyao Huang ◽  
Fan Zhou ◽  
Fujian Xia
Keyword(s):  
Friction Coefficient ◽  
Finite Elements ◽  
Stress Distribution ◽  
Temporomandibular Joint ◽  
Finite Elements Analysis ◽  
Temporomandibular Joint Disc ◽  
Fea Model ◽  
Tmj Disc ◽  
Joint Disorder ◽  
3D Fea

Abstract Background：Anterior and/or medial displacement of the temporomandibular joint disorder(TMJ) disc or intra-articular disorders( ID) is the most common form of TMJ dysfunction(TMD).TMD cause change of friction coefficient during TMJ movement. In the present study, We provided a 3D finite elements models(FEM) including the maxilla, disc and mandible and evaluated the stress distribution with different friction coefficient.Methods: 14 volunteers without TMD and 20 TMD patients,who were diagnosed by MRI, were selected.CT and MRI data were collected to build 3D FEA model of mandibular and TMJ disc.Stress distribution with different friction coefficient was measured.Result: In the normal model, stress distribution on TMJ disc was 2.07±0.17,1.49±0.14,1.41±0.14MPa with 0.001 0.3 and 0.4 friction coefficient.In TMD model,stress distribution is 3.87±0.15,7.23±0.22,7.77±0.19MPa respectively. Conclusion:When the friction coefficient of the side with anterior displacement increased, stress on the disc, condyle and mandible of the opposite side increased. Simultaneously, stress values of the disc, condyle and mandible were higher than those of the normal lateral joint.

Finite Elements Analysis of the Temporomandibular Joint Disc in Patient with Intra-articular Disorders

2019 ◽  
Author(s):  
Linfeng Lai ◽  
Guofeng Xiong ◽  
Chenyao Huang ◽  
Fan Zhou ◽  
Fujian Xia
Keyword(s):  
Friction Coefficient ◽  
Finite Elements ◽  
Stress Distribution ◽  
Articular Disc ◽  
Finite Elements Analysis ◽  
Temporomandibular Joint Disc ◽  
Data Registration ◽  
Fea Model ◽  
3D Data ◽  
3D Fea

Abstract Abstract Background：Anterior and/or medial displacement of the articular disc or intra-articular disorders( ID) is the most common form of TMJ dysfunction.In the present study,3D finite elements analysis (FEA) models including the maxilla, disc and mandible were established using 3D data registration technology.Methods：Six healthy volunteers and 20 TMD patients were selected.CT and MRI data were collected to build 3D FEA model of mandibular and TMJ disc.Stress distribution with different friction coefficient was measured.Result:Results showed that maximum stress of the lateral articular disc in the normal and pathological models. In the normal model, stress distribution was 2.21,1.56,1.49 MPa with 0.001 0.3 and 0.4 friction coefficient.In ID model,stress distribution is 3.87,7.23,7.77MPa respectively. Conclusion:When the friction coefficient of the side with anterior displacement increased, stress on the disc, condyle and mandible of the opposite side increased. Simultaneously, stress values of the disc, condyle and mandible were higher than those of the normal lateral joint.

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