ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The aim of this study was to analyze the microstructure and to observe the surface reactivity ofa composite system composed of two kinds of zirconia/alumina (Z/A) composites and Vita alphaglass-ceramic, which would satisfy the biocompatibility and strength requirements for dental applications.Two zirconia/alumina composites defined as specimen A and B were used as the substrate of fixed partialdenture, while commercial Vita alpha glass-ceramic as the coating-glass.[removed info]From the experiment we canfind the following results. Zirconia particles migrated into grain boundaries and located at three or fourgrain junctions of alumina particles. The crack pattern is consistently transgranular for the zirconia grains,whereas it is intergranular for alumina grains. The mechanical properties of the composite with 66.6wt%zirconia was superior to that of 33.3wt% zirconia-composed composite, while the homogeneous bondbetween Vita alpha glass-ceramic and Z/A composites are distinct. Therefore, this system composed ofZ/A composites and Vita alpha glass-ceramic would satisfy matching properties of dental requirementsand it has a great future to be used as all-ceramic restoration materials
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.1599.pdf
Permalink