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Finite Element Analysis Of Stress Induced Fractures In Bone Around Dental Implants
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Book Synopsis Finite Element Analysis of Stress Induced Fractures in Bone Around Dental Implants by : George A. Papavasiliou
Download or read book Finite Element Analysis of Stress Induced Fractures in Bone Around Dental Implants written by George A. Papavasiliou and published by . This book was released on 1992 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stress Analysis on the Bone Around Five Different Dental Implants by :
Download or read book Stress Analysis on the Bone Around Five Different Dental Implants written by and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Implantology has a widespread application in dental cases these days. Although the life of this practice is short, there has been considerable progress in this field and many research laboratories and production sites have been developed in this regard. There are various types of implants in the market, and there is a need to study their features to find out the advantages and disadvantages of them and choose the appropriate implant in each case. One major research is the study of stress distribution on the bone around the implant, which is an effective criterion in osseointegration. In this paper, stress analysis has been conducted on the bone by applying finite element method. A comparison has been performed among different models of dental implant fixtures.
Book Synopsis Application of the Finite Element Method in Implant Dentistry by : Jianping Geng
Download or read book Application of the Finite Element Method in Implant Dentistry written by Jianping Geng and published by Springer Science & Business Media. This book was released on 2008-09-26 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book creates the theoretical foundation that novices need to perform the finite element method in implant dentistry. It shows how both the implant dentist and the designer can benefit from finite element analysis. The authors explain the theory and math of the finite element method. Then, you get practical applications alongside discussions of the critical issues in using finite element analysis for dental implant design.
Book Synopsis Finite Element Analysis of the Stress on the Implant-Bone Interface of Dental Implants with Different Structures by : Liangjian Chen
Download or read book Finite Element Analysis of the Stress on the Implant-Bone Interface of Dental Implants with Different Structures written by Liangjian Chen and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Finite Element Analysis of the Stress on the Implant-Bone Interface of Dental Implants with Different Structures.
Book Synopsis Finite Element Stress Analysis of Bone Surrounding Osseointegrated Dental Implants by : Marianne Ierace Mayberry
Download or read book Finite Element Stress Analysis of Bone Surrounding Osseointegrated Dental Implants written by Marianne Ierace Mayberry and published by . This book was released on 1987 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Finite Element Analysis of Dental Implant-bone System During and After Implantation by : Rudi Cobus Van Staden
Download or read book Finite Element Analysis of Dental Implant-bone System During and After Implantation written by Rudi Cobus Van Staden and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : Development of an ideal substitute for missing teeth has been a major aim of dental practitioners for millennia. Modern dental implants are biocompatible screw-like titanium {u2018}fixtures{u2019} that are surgically placed into the jaws to replace missing teeth. Implants are superior to conventional prostheses, in both function and long-term predictability. In 2006 approximately 30,000 implants were placed in Australian patients. Implant sales have doubled in the last 5 years and are increasing by about 15% per year. Although implants exhibit excellent long-term retention (~95% after 5 years), there are significantly more failures in areas where bone quality and quantity is poor, resulting in poor patient outcomes and costs estimated at $15 million per year in Australia. Most failures arise from poor clinical technique and inadequate understanding of the potentially damaging stress characteristics during implant placement and function (chewing). Three-dimensional (3D) Finite Element Analysis (FEA) is a numerical method for analysing stresses and deformations in structures of any given geometry and under any load. There are reports on utilising 3D FEA to investigate implant-jawbone interactions after full osseointegration. However no work has been done to comprehensively quantify the performance of the bone-implant system during and after implantation. This research thus aims to develop a comprehensive FEA technique to evaluate the performance of the bone-implant system during the implantation process itself, as well as the healing and maintenance phases of osseointegration.
Book Synopsis Finite Element Analysis of Orthopaedic Plates and Screws to Reduce the Effects of Stress Shielding by : Kristina Haase
Download or read book Finite Element Analysis of Orthopaedic Plates and Screws to Reduce the Effects of Stress Shielding written by Kristina Haase and published by . This book was released on 2009 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fiber-reinforced Composites in Clinical Dentistry by : Martin A. Freilich
Download or read book Fiber-reinforced Composites in Clinical Dentistry written by Martin A. Freilich and published by Quintessence Publishing (IL). This book was released on 2000 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Four researchers in prosthodontics and operative dentistry at the University of Connecticut report their findings from a decade of investigation that has largely overcome the primary reasons why the material, widely successfully elsewhere, had found little application in dentistry. They have primari
Book Synopsis Finite Element Analysis of Stress Distribution in and Around Two Endosseous Implants by : Hussein F. Garrana
Download or read book Finite Element Analysis of Stress Distribution in and Around Two Endosseous Implants written by Hussein F. Garrana and published by . This book was released on 1986 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Combination Stress Analysis of Immediate Implant Provisional Restoration Using Cyclic Fatigue Test and Three-dimensional Finite Element Analysis by : Kikue Yamaguchi
Download or read book Combination Stress Analysis of Immediate Implant Provisional Restoration Using Cyclic Fatigue Test and Three-dimensional Finite Element Analysis written by Kikue Yamaguchi and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Objective: In recent years, immediate loading implant treatment has been widely recognized as an effective solution for edentulous patients. Risk factors of disintegration associated with immediate loading include excessive occlusal force such as bruxism, and relating to the technical complication, the fracture of temporary restoration has been pointed out. The fracture of temporary restoration can be considered to increase the micro movement around implant, and lead to fail osseointegration. A large numbers of stress analysis for implant prosthesis has been reported by 3D FEA and mechanical tests, but it has not been clarified the cause of fracture of the temporary restoration in multidimensional analysis. In this study, we analyzed the stress concentration in patient models by 3D FEA and the cyclic fatigue test in materials for temporary restoration, and tried out the combination stress analysis. Subjects and Methods: The strength to be possessed as a temporary prosthesis was examined by 1) the stress test, 2) the three-point bending test and 3) the three-dimensional finite element analysis (FEA). 1) For the 100000 cyclic fatigue test, a test piece of 25 mm in length u00d7 10 mm in width u00d7 2 mm in thickness cut out from a resin disc for CAD/CAM (Aadva PMMA disc, GC Co.) was used. 2) For the three-point bending test, a similar test piece to the one used in the stress test was used. 3) For the FEA, the results of the three-point bending test was reproduced and analyzed. Test pieces were similar condition. 4) To recognize the clinical situation, another FEA was done with the immediate load patient model. These models were maxillary edentulous patients before implant placement. To assume immediate load, the inter-face between the bone and the implant was set as a u201ccontact stateu201d (frictional coefficient = 0.33). The physical property values of the bone were calculated from the CT values and set for each element, and the physical property values of other elements were set based on the known values. The load condition was set based on the occlusal force data recorded from a patient with bruxism, and the constraint condition was set as the maxillary sinus upper margin. This study was approved by the ethics committee of our school of dentistry and the data was used with the patientu2019s consent.Results: From the 105 cyclic fatigue test, it is revealed that the PMMA piece was fractured over 115 N load. In the three-point bending test, the average maximum tensile stress in the test piece was 80.3 MPa at 115 N load, that of FEA analysis was 75.5 MPa at the same condition. In the FEA patient models, the maximum tensile stress over 75.5 MPa was found at the PMMA material around temporary cylinder, and maximum value were 247.7 MPa, 258.8 MPa and 290.8MPa for each patient.Discussion and Conclusion: The fracture of temporary restoration in immediate loading treatment is estimated to occur around temporary cylinders. It is necessary to consider temporary restoration designs or reinforcement not to exceed the maximum tensile stress in real clinical situation. From the results of this study, it is suggested that the effective possibility of combination stress analysis in real material and FEA model.
Book Synopsis A Three-dimensional Finite Element Stress Analysis in and Around the Isis Endosseous Dental Implant by : Robert J. Seckinger
Download or read book A Three-dimensional Finite Element Stress Analysis in and Around the Isis Endosseous Dental Implant written by Robert J. Seckinger and published by . This book was released on 1989 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Finite Element Analysis of the Stress Distribution of an Osseointegrated Implant by : Aisling M. O'Mahony
Download or read book A Finite Element Analysis of the Stress Distribution of an Osseointegrated Implant written by Aisling M. O'Mahony and published by . This book was released on 1997 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: The maintenance of the osseointegrated implant bone interface is critical to the success of the osseointegrated implant. Many clinical studies have suggested that repeatedly excessive loads applied to the implant restoration, is one of the factors contributing to breakdown at the implant/bone interface and premature failures of the osseointegrated implant. In the single unit osseointegrated implant in the posterior mandible the mesiodistal and buccolingual widths of the crown are generally greater than the width of the implant fixture. The point of load application is one of the variables that influences the manner in which occlusal forces are transmitted to the implant and surrounding bone. Off axis loads applied to the crown create a cantilever effect and introduce bending moments which may cause excessive stresses at the implant bone interface. The wider the crown, the greater the potential for off axis loading. The purpose of this study was to evaluate and compare the effect of axial and off axis loads on the stress gradients at the oxxeointegrated implant/bone interface of a single unit posterior implant. Finite element analysis was used to evaluate the magnitude and location of stresses. Occlusal forces were modeled as axial and off axis vertical loading. The study showed that under load conditions the highest stresses were concentrated at the apex of the implant and at the crestal bone/implant interface. Off axis loading resulted in a large increase in compressive stresses in the crestal cortical bone on the side of the applied load, and a large increase in tensile stresses in the crestal cortical bone on the side opposite the applied load.
Book Synopsis Finite Element Stress Analysis on the Effect of an Implant Alignment, Offset and Load Direction in the Posterior Mandible by :
Download or read book Finite Element Stress Analysis on the Effect of an Implant Alignment, Offset and Load Direction in the Posterior Mandible written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Background;Slight offset of the central implant in 3-unit implant-supported prostheses has been recommended to improve biomechanical behavior.However, studies that assessed the effects of an offset implant congfiguration in the posterior mandible are rare.Aim/Hypothesis;The purpose of this 3-dimensional (3D) finite element study was to assess the effects of load direction and number of implant in 3-unitimplant-supported prostheses with varying implant positions (straight-line or offset) on the stress distribution in the implant,prosthesis, and bone tissue.Materials and Methods;Three 3D models were used to simulate a posterior mandible bone block: 2 implants and 3-unit fixed dental prosthesis(FDP) with apontic in the middle (model M1), 2 implants and 3-unit FDP with a cantilever pontic at one end (model M2), FDP supported by 3implant with straight line placement (model M3) and FDP supported by 3 implant with staggered implant configuration (model M4).The applied forces were 120 N axially (L1), or 120 N obliquely(L2). The type of implant platform simulated was an external hexagon.Maximum von Mises stress (VMS) on the fixture, abutment, screws, fixed prosthesis and supporting alveolar bone was measured andanalyzed.Results;Peak VMS in the implants by oblique loading were 10-25 times greater in implant and 6-12 times greater in alveolar bone,respectively than the stresses by axial loading.Compared to the maximum stress value of the implant by oblique loading in model M1, the maximum stress value increased to 116%in M2, but decreased to 74% and 71% in M3 and M4, respectively.In the cantilevered M2 model, the maximum stress values in the FDP were 851.5 and 908.4 MPa, respectively, by the vertical andoblique loadings, which are 5.1 and 7.1 times higher than the other models, respectively.The area of maximum stress in the implant was located around the area where the abutment screw and fixture were connected.Stress concentration was observed at an abutment screw by oblique load and at the top of the implant fixture by axial load.In the supporting bone, the maximum stress value increased to 120% in M2, but decreased to 69% and 63% in M3 and M4,compared to the stress in M1 by oblique load.Conclusions and Clinical Implications;The effect of staggered alignment on implant stress was negligible, but the cantilever design of the prosthesis and the number ofimplants had a greater impact on stress distrubution.
Book Synopsis Stress Analysis of Dental Implant Devices and Human Mandible by Finite Element Method by : Tong Zhang
Download or read book Stress Analysis of Dental Implant Devices and Human Mandible by Finite Element Method written by Tong Zhang and published by . This book was released on 1992 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Finite Element Analysis of and Multiscale Skeletal Tissue Mechanics Concerning a Single Dental Implant Site by : Timothy James Sego
Download or read book Finite Element Analysis of and Multiscale Skeletal Tissue Mechanics Concerning a Single Dental Implant Site written by Timothy James Sego and published by . This book was released on 2016 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finite element analysis (FEA) in implantology is performed in design applications concerning the complex topology of an implant, according to theoretical assumptions about and clinical data concerning the biomechanical nature of skeletal tissue. Implants are placed in topologically and physiologically complex sites, and major disagreement exists in literature about various aspects concerning their modeling and analysis. Current research seeks to improve the implementation of an implant by the use of short implants, which negate the necessity of additional surgical procedures in regions of limited bone height. However, short implants with large crown heights introduce biomechanical complications associated with increased stress and strain distributions in skeletal tissue, which may cause bone loss and implant failure. The short implant is characterized by the geometric ratio of the crown height to the implant length, called the crown-to-implant (C/I) ratio. In this work nonlinear FEA was performed to investigate the effects and significance of the C/I ratio on long-term implant stability. A finite element model was developed according to literature, and emulation of previous research and comparison of reported results were performed. Comparison of results demonstrated significant sources of error in previous research, which are argued to be caused by mesh-dependency from common model idealizations in literature. A convergence test was then performed, which verified the mesh-dependency of results and challenged the reliability of some common model assumptions and methods of analysis in literature. A 16-point design of experiments was then performed to evaluate the significance and influence of the C/I ratio, considering a proposed novel method for evaluating results and predicting long-term stability. Analysis of results demonstrated that the C/I ratio augments the inherent biomechanical effects of an implant design, particularly overloading strain concentrations at implant interface features. The use of short implants with high C/I ratios is determined to be inadvisable, considering the physiological response of tissue to strain distributions and biological context. A novel, multiscale material model is then proposed to describe the short-term accumulation of damage and biomechanical remodeling response in orthotropic skeletal tissue, as a potential solution to the mesh-dependency of results.
Book Synopsis Finite Element Simulation of the Bone Modeling and Remodeling Processes Around a Dental Implant by : Qiguo Rong
Download or read book Finite Element Simulation of the Bone Modeling and Remodeling Processes Around a Dental Implant written by Qiguo Rong and published by . This book was released on 2002 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bone Remodeling and Osseointegration of Implants by : Andy H. Choi
Download or read book Bone Remodeling and Osseointegration of Implants written by Andy H. Choi and published by Springer Nature. This book was released on 2023-05-10 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an insight into the latest advances in bone fracture healing and remodeling algorithm and their incorporation into patient-specific finite element models and the use of machine learning and artificial intelligence to predict the bone regeneration and osseointegration process with a certain degree of accuracy. It also examines the applications of numerical models to simulate the fracture healing process, which may prove to be advantageous in determining the optimal mechanical-based treatment or reconstruction after an accident or illness. This book is aimed at medical and dental professionals who are involved in implantology and tissue engineering such as dentists, oral and maxillofacial surgeons, orthopedic surgeons, students, and researchers.
