Global ETD Search
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 719 for “"Implant"”.
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Permanent surgical implant alloys.
Massachusetts Institute of Technology. Dept. of Metallurgy and Materials Science. Thesis. 1973. Ph.D.
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The Retrospective Study of the Implant Risk Factor and actor Clinical Result in Implant Prosthesis
… Branemark first introduced Osseointegration for implants. The successful use of Osseointegrated implants to replace missing teeth has been demonstrated for both the completely and partially edentulous patients. Many studies have confirmed an excellent long-term prognosis. Biocompatibility and …
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Development of an Artificial Meniscus Implant
… of this thesis developed an artificial meniscus implant with a similar shape, strength, compliance, and contact mechanics as the natural meniscus. Previous work on this implant showed that PVA gave the desired compressive properties and reinforcing Kevlar fibers had the desired strength. These …
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Biocompatibility Investigations of Surgical Implant Alloys.
… comprising the alloy. In vivo testing involved implanting the alloys in rabbits and injecting synthetic solutions of corrosion products at the implant-to-capsule interface. In vitro exposure of cell cultures to synthetic stainless steel corrosion product solutions demonstrated toxic …
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The Osseointegration of Magnesium Oxidized Implant
BACKGROUND & OBJECTIVE: Osseointegrated implants have proven to be successful in both full and partial edentulous patients since the 1960s. Titanium implants have a thin oxide surface layer and the properties of this layer may explain the good biocompatibility. Recently, anodization of the implant …
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'No-touch' breast-implant insertion device
… has been identified as the major cause of breast-implant failures and subsequent discomfort, pain and shape deformation following cosmetic breast implantation procedures. It has been documented that CC is primarily due to bacteria which are transmitted in the breast-cavity through conventional …
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A low-power cochlear implant system
Cochlear implants, or bionic ears, restore hearing to the profoundly deaf by bypassing missing inner-ear hair cells in the cochlea and electrically stimulating the auditory nerve. For miniaturized cochlear implants, including behind-the-ear (BTE) models, power consumption is the chief factor in …
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Novel Implant Designs In Magnetic Drug Targeting
… forces, have led researchers to study the use of implants to increase magnetic forces and the collection of MDCPs. This method is termed implant assisted (IA) - MDT, which exploits basic principles of high gradient magnetic separation to improve local drug retention.</p> <p>The work herein will …
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Perception of prosody by cochlear implant recipients
Recipients of present-day cochlear implants (CIs) display remarkable success with speech recognition in quiet, but not with speech recognition in noise. Normal-hearing (NH) listeners, in contrast, perform relatively well with speech recognition in noise. Understanding which speech features support …
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Surgical Factors Related to Peri-Implant Diseases
… to highlight the variables that occur during implant surgery which may contribute to peri-implant disease. Material and methods This retrospective study was first approved by the University of Pennsylvania IRB (#854482). Data was collected from the electronic health record from a total of 309 …
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Dental implant maintenance: measuring confidence and collaboration
<p>Purpose: Research has shown dental implants improve quality of life. This study utilized an educational course and before and after course surveys to observe differences in dental providers in regards to confidence performing dental implant maintenance, changes in collaboration, and utilization …
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Anatomical Complications Related to Dental Implant Surgery
… to dentists for successful placement of dental implants. Dental implants are becoming more popular and are commonly placed by specialists and dentists around the world. The purpose of this thesis is to help identify the anatomy of the oral cavity and surrounding regions so potential …
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Mechanical Behavior of Posterior Implant Supported Restorations
… resistance of different CAD/CAM customized implant-supported restorations using two materials, monolithic zirconia and monolithic lithium disilicate and using two crown designs, hybrid-abutment-crowns and hybrid-abutments with separate crowns. Thirty-two implants were embedded …
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Electro-anatomical models of the cochlear implant
While cochlear implantation has become the standard care in treating patients with severe to profound sensorineural hearing loss, the variation in benefit (communicative ability) individual patients derive from implantation remains both large and, for the most part, unexplained. One explanation for …
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Software for Designing Custom Orbital-Craniofacial Implant Plans
Purpose: Custom cranio-orbital implants have been shown to achieve better performance than their hand-shaped counterparts by restoring skull anatomy more accurately and by reducing surgery time. Designing a custom implant involves reconstructing a model of the patient's skull using their computed …
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Reflections on a Single Institution Cochlear Implant Experience
The general metadata -- e.g., title, author, abstract, subject headings, etc. -- is publicly available, but access to the submitted files is restricted to UT Southwestern campus access and/or authorized UT Southwestern users.
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IMPLANT MATERIAL FUNCTIONALIZATION TO ENHANCE BIOACTIVITY IN ORTHOPAEDICS
… and regeneration is the engineering of an implant that incorporates osseointegration to meet the metabolic demands of recovery. Although implants are typically expected to last ten years or more, longevity is still not assured and the lack of integration into the bone for long-term survival …
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Immune system involvement in metal hip implant failure
… effective treatment for many, around 12% of hip implants were revised in 2012. MoM articulations had poor implant survival compared with non-MoM, displaying four times higher failure rate. Between 1997 and 2004, 652 hip replacement surgeries were undertaken in Norfolk using the Ultima TPS MoM THR …
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Digitally-Controlled Deep Brain Stimulation Lead Implant System
… normal function of the brain. The advances in implantable pulse generators designed for deep brain stimulation have been remarkable, and the applications for deep brain stimulation continue to grow including multiple sclerosis (Berk, et al. 2002), severe psychiatric disorders (Kopell, Greenberg …
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