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ndltd-OhioLink-oai-etd.ohiolink.edu-osu1168720214
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ndltd-OhioLink-oai-etd.ohiolink.edu-osu11687202142021-08-03T05:51:49Z Characterization of the interface between prefabricated dental implant component and cast dental alloys Sanli, Yurdanur Metallurgical compatibility between the cast-to component and the cast dental alloy is essential. Objectives of this study were to compare the metallurgical compatibility of 6 different casting alloys with one selected dental implant component and to evaluate the effect of porcelain firing cycles on the interface. The microstructures and the elemental compositions of the adjacent bulk alloys and the interfacial region were investigated by scanning electron microscopy and energy dispersive spectroscopy in the as-cast condition and after porcelain firing cycles. Vickers hardness was determined. Metallurgical phases in the bulk alloys and the interfacial regions were characterized with micro x-ray diffraction for these same two conditions. Six specimens for each alloy were loaded in tension to failure. Values of elastic modulus, 0.1% and 0.2% yield strength, ultimate tensile strength, and percentage elongation at fracture were obtained. Following observation of the fracture surfaces with the SEM, polished and etched specimens were observed. Microstructures of the bulk cast noble alloys were maintained up to a well-defined boundary. An approximately 5-6 micron wide band was observed at the interfacial region, where the microstructure had characteristic features from the casting alloy and/or implant component. The width of the interfacial region was increased after the simulated porcelain firing cycles. The phases found in the interfacial region by micro-XRD were very similar to those found in the casting alloy and/or implant component, indicating the absence of substantial amounts of new phase(s) formed at the interfacial region during the cast-to process. Statistically significant differences were found among 6 alloys for all mechanical properties. Fracture surfaces for all alloys typically contained casting porosity. Complex fracture surfaces having characteristic features of both brittle and ductile fracture were observed for all alloys. It can be concluded that less expensive alternative alloys provide successful results comparable with the more expensive high-gold alloys. 2007-01-16 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu1168720214 http://rave.ohiolink.edu/etdc/view?acc_num=osu1168720214 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
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NDLTD
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| language |
English
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| sources |
NDLTD
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| author |
Sanli, Yurdanur
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| spellingShingle |
Sanli, Yurdanur
Characterization of the interface between prefabricated dental implant component and cast dental alloys
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| author_facet |
Sanli, Yurdanur
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| author_sort |
Sanli, Yurdanur
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| title |
Characterization of the interface between prefabricated dental implant component and cast dental alloys
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| title_short |
Characterization of the interface between prefabricated dental implant component and cast dental alloys
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| title_full |
Characterization of the interface between prefabricated dental implant component and cast dental alloys
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| title_fullStr |
Characterization of the interface between prefabricated dental implant component and cast dental alloys
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| title_full_unstemmed |
Characterization of the interface between prefabricated dental implant component and cast dental alloys
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| title_sort |
characterization of the interface between prefabricated dental implant component and cast dental alloys
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| publisher |
The Ohio State University / OhioLINK
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| publishDate |
2007
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| url |
http://rave.ohiolink.edu/etdc/view?acc_num=osu1168720214
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| work_keys_str_mv |
AT sanliyurdanur characterizationoftheinterfacebetweenprefabricateddentalimplantcomponentandcastdentalalloys
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| _version_ |
1719426770613043200
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