Search for dissertations about: "Hydroxyapatite"
Showing result 1 - 5 of 109 swedish dissertations containing the word Hydroxyapatite.
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1. Fixation of Spinal Implants : Clinical and Experimental Studies on the Effects of Hydroxyapatite Coating
Abstract : Loosening of implants is a frequent complication in orthopaedic surgery. The aim of this thesis was to evaluate hydroxyapatite coating of pedicle screws with mechanical and histological methods and to correlate the results with the radiological findings.Hydroxyapatite (HA) coating of pedicle screws was investigated in experimental studies in sheep. READ MORE
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2. Hydroxyapatite – A trojan horse in the delivery of apatite-binding cytostatics in bone cancer
Abstract : Osteosarcoma is a malignant cancer of the bone mainly affecting adolescents. Despite progress, the clinical management of osteosarcoma is still challenging. With the current chemotherapy protocol being used for more than 30 years, the number of poor responders is increasing. READ MORE
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3. Spark Plasma Sintering Enhancing Grain Sliding, Deformation and Grain Size Control : Studies of the Systems Ti, Ti/TiB2, Na0.5 K0.5 NbO3, and Hydroxyapatite
Abstract : The unique features of the Spark plasma sintering (SPS) were used to investigate the sintering and deformation behaviour of titanium and titanium–titanium diboride composites, and to control the sintering and grain growth of ferroelectric Na0.5K0.5NbO3 (NKN) and of hydroxyapatite (HAp). READ MORE
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4. On Bone Regeneration in Porous Bioceramics - Studies in humans and rabbits using free form fabricated scaffolds
Abstract : The objective of the present thesis was to evaluate the effect of material chemistry and macroand micro-porosity on bone regeneration in association with synthetic, porous ceramic materials. Ceramic scaffolds were designed and manufactured for experimental and human studies using free form fabrication (FFF), a technique which produces the object layer by layer using data from CAD files. READ MORE
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5. On percutaneous implants fate and feature
Abstract : Abstract The main objective of this thesis was to investigate skin reactions around percutaneous abutments in the facial and retroauricular regions. Secondary objectives were to investigate the number of lost extraoral implants and their co-morbidity over time, for example complications because of skin reactions due to the skinpenetrating abutment. READ MORE