Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


osu1168720214.pdf (18.37 MB)

ETD Abstract Container

Abstract Header

Characterization of the interface between prefabricated dental implant component and cast dental alloys

Sanli, Yurdanur
http://rave.ohiolink.edu/etdc/view?acc_num=osu1168720214

Abstract Details

2007, Doctor of Philosophy, Ohio State University, Dentistry.
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.
William Brantley (Advisor)
172 p.

Recommended Citations

Citations

  • Sanli, Y. (2007). Characterization of the interface between prefabricated dental implant component and cast dental alloys [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1168720214

    APA Style (7th edition)

  • Sanli, Yurdanur. Characterization of the interface between prefabricated dental implant component and cast dental alloys. 2007. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1168720214.

    MLA Style (8th edition)

  • Sanli, Yurdanur. "Characterization of the interface between prefabricated dental implant component and cast dental alloys." Doctoral dissertation, Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=osu1168720214

    Chicago Manual of Style (17th edition)

osu1168720214
716
© 2006, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.