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:
This study was designed to evaluate mechanical properties and the marginal fitness ofglass infiltrated alumina core fabricated from aqueous alumina tape. Utilizing the automatic Dr.Blade model (DP-150 of Japan JinChungjungGi manufacturer) fabricated the slurry into 0.5 ㎜thickness aqueous-based alumina tape. The coefficient of thermal expansion and biaxial flexuralstrength of alumina composite produced from alumina tape were investigated. Three upper centralresin incisors were prepared with 90o, 110o, 135o shoulder margin for all-ceramic crown. Individualtooth model’s impressions were taken 15times each to make epoxy resin die. Cores were made ofalumina tape to each and every dies. Crown setting was done on the epoxy resin dies. Thespecimens were evaluated for measuring for marginal gaps of glass infiltrated alumina corefabricated from aqueous alumina tapes under 180 magnifications with Kan Scope(SometechVision, Korea) was done. The retained measurements were analyzed with Turkey’s StudentizedRange Test for marginal fitness of each specimen. Coefficient of thermal expansion of alumina tapewas 7.5x10-6/℃, and biaxial flexural strength was observed to be 498±32MPa. The marginal fits ofalumina cores made of alumina tapes showed the least marginal gap of 41.5 ㎛ in the 110o shouldermargin, and increasingly with 135o, 90o shoulder margin. Marginal fitness should be better in angleslarger than 90o
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.1377.pdf
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