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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 36 for “"bone implant"”.
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Magnesium doped calcium phosphate sodium alginate biocomposite for bone implant application
Calcium phosphate (CaP) usually been used for bone implant application due to the similarity mineral in natural bone and it is bioactive and biocompatible material. However, CaP has low mechanical strength under load bearing condition and limited on certain application only. Therefore, sodium …
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Histological and Mechanical Analysis of Bone/Implant Interface in Female Retired-Breeder Rabbits
Endosseous implants have been accepted as a viable dental and medical adjunct and are now used for multiple dental applications. The majority are placed in patients of relatively advanced age, and, as such, the increased use of implants has raised questions in the areas of bone healing and …
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Fabrication and corrosion assessment of biodegradable metallic alloys for patient-specific bone implant applications
… dissolve after their service lifetime. Permanent implants are often much stiffer than the bone they are supporting, which can lead to loss of bone density, mechanical failure of the implant, and require corrective surgery. Biodegradable orthopedic implants offer strength and stiffness close to …
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Finite Element Analysis Of A Test Specimen For Strength Of A Co-polymer Layer At A Bone-implant Interface
… can be applied as an interfacial layer between bone cement and steel implants to improve their performance and life. Finite element (FE) analysis techniques are used to assess the behavior of the interface layer under static and dynamic loading conditions. The material property of the co-polymer …
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Methods for increasing customization in rapid machining patient-specific bone implants
… of rapid machined patient-specific bone implants. A bone implant is a medical device that is used for replacing missing or damaged bone tissue in a patient's body. It is possible for a bone implant to have three different types of surfaces (articular, periosteal, fracture) which each …
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Stochastic analyses of mechanical and biomedical structures with uncertainties
… chaos expansion is also implemented to examine a bone implant healing process with uncertainties. To investigate the effects of uncertain mechanical and biochemical parameters on the bone implant healing process, stochastic models using both Galerkin projection and collocation based polynomial …
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Finite Element Representation of Bone-Screw Mechanics
… or arm. Fixation using locking plates and bone screws has become the treatment of choice; however, an overall complication rate of 49% has been reported, with 7.5% resulted from failure of the bone-screw interface. Accordingly, the purpose of the work presented in this thesis is to develop …
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A Mechanical and Histological Study of Functionally Graded Hydroxyapatite Implant Coatings
… discovered that titanium was biocompatible with bone, extensive research has been done to improve the osseointegration of dental implants. As advances in medicine continue, the average life span of the population is ever increasing. Today, people of all ages are investing more money and time into …
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Development And Application Of Biomimetic Electrospun Nanofibers In Total Joint Replacement
… of osseointegration (direct anchorage of an implant by bone formation at the bone-implant surface) and implant infection (such as that caused by Staphylococcus aureus, S. aureus) are the two main causes of implant failure and loosening. There is a critical need for orthopedic implants that …
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Resorption rate tunable bioceramic: Si,Zn-modified tricalcium phosphate
<p>An ideal bone implant material would support the activity of osteoblasts in the development of new bone, while simultaneously being resorbed by osteoblasts as part of the lifelong orderly process of bone remodeling. Silicon and Zinc modified tricalcium phosphate (Si,Zn-TCP), a biphasic material, …
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Development of a Computational Approach to Assess Hip Fracture and Repair: Considerations of Intersubject and Surgical Alignment Variability
… models of hip fracture have evaluated bone strains to assess fracture risk, the current study advances the state of the art by utilizing a novel technique in the extended finite element method (XFEM) to assess hip fracture and develops a computational approach to evaluate fracture …
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Osseointegration potential for heat treated 3D Ti6Al4V scaffolds seeded with mysenchymal stem cells in vitro
… of artificial joints occurs due to the loss of implant fixation. By implementing a 3D porous structure at the bone-implant interface, the ingrowth of bone will permit better and stronger interlocking of the implant to prevent loosening. In this study, it is hypothesized that the seeding of 3D …
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Nanoscale influences on bioactivity : ultrastructure and nanomechanics of model bioactive hydroxyapatite based biomaterials
… for improved synthetic materials as orthopedic implants to replace human bone lost and damaged due to disease or injury. Certain ceramics, such as hydroxyapatite (HA), have the special property of being bioactive, meaning that an interfacial bond between the implant and the surrounding tissue …
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Analysis of microstructure in human carpal bone using micro-CT
… 골절로 인한 나사못과 임플란트의 삽입술에 해면골의 방향성과 골소주 두께 등을 고려해야 bone-implant interface에 보다 많은 in-growth가 유발되어 임플란트의 수명을 연장할 수 있다고 생각한다.
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Biomechanical and histological evaluation of a new zirconia implant in a canine model
Background: Currently titanium implant fixtures are considered as a gold standard because of their biocompatibility and their clinical success rates have been well documented. The esthetic outcome of restorations supported by titanium implants may be compromised if the dark gray color of the …
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Development of Precision 3D-Printed Medical Implants
… supporting coordinated cellular responses during bone remodelling due to branched out interconnected dendritic processes, which was supported by gene expression profiles. Interestingly, only the Ti12 alloy inhibited S. aureus bacterial adhesion without negatively affecting bone cell proliferation. …
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Effect of Implant Surface Microtopography by Hydroxyapatite Grit-Blasting on Adhesion, Proliferation and Differentiation of Osteoblast-like Cell Line, MG-63
… potential that RBM surfaces that accelerate the bone formation and finally increase bone-implant contact.
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Biomimetica per l'ingegneria tissutale dell'osso
Reconstruction of bone is needed for high bone loss due to congenital deformities, trauma or neoplastic diseases. Commonly, orthopaedic surgical treatments are autologus or allogenic bone implant or prosthetic implant. A choice to the traditional approaches could be represented by tissue …
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The Design Modelling of PEEK Composite for Bone Implants
… and structural integrity of Hip and Femur Implants through PEEK Composite and FDM Techniques. Examines using polyether-ether-ketone (PEEK) materials for improved bone implantation. While PEEK materials offer benefits such as non-toxicity, high strength, and toughness, they often fall short …
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The Fabrication of Integrated Strain Sensors for “Smart” Implants using a Direct Write Additive Manufacturing Approach
… of complex three-dimensional (3D) synthetic bone tissue implant scaffolds. However, implants are still unable to provide post surgery feedback. Implants often loosen due to mismatched mechanical properties of implant material and host bone. The aim of this PhD research is to fabricate an …
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