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Search Publications by: John A. Tesk ()

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Displaying 26 - 42 of 42

High-Temperature Investments

January 1, 2002
Author(s)
O Okuno, K Asaoka, John A. Tesk
Dental investing materials, used for the processing of dental materials above temperatures of ca. 1200 degrees C to 1300 degrees C, are described. Their compositions and the effects of different ingredients are presented.

Effects of Annealing on UHMWPE Molecular Orientation

January 1, 2000
Author(s)
S Sambasvian, Daniel A. Fischer, M C. Shen, John A. Tesk, Stephen M. Hsu
Ultra-high molecular weight polyethylene (UHMWPE) is the dominant material used in artificial joints due to its outstanding wear resistance. At the same time, UHMWPE wear debris has been found to contribute to the loosening of the im-plants. As life

A Novel Multiaxial Wear Tester for Accelerated Testing of Materials

December 1, 1999
Author(s)
M C. Shen, Stephen M. Hsu, John A. Tesk, A Christou
A versatile wear tester has been designed and built. The initial study showed that that with this tester, tes procedures can be developed to achieve clinically relevant simulations in a short time. With the continuously monitored force traces, this tester

Generation of Different UHMWPE Particle Shape by Wear Through Surface Texturing

April 1, 1999
Author(s)
H. W. Fang, M C. Shen, U Cho, John A. Tesk, A Christou, Stephen M. Hsu
Ultra-high molecular weight polyethylene (UHMWPE) wear particles in replaced joints have been linked to biochemical reactions that eventually lead to loosening of prosthesis. Several studies have shown that UHMWPE produces a wide range of particle sizes

Amorphous Alloys Containing Cobalt for Orthopaedic Applications

November 1, 1998
Author(s)
John A. Tesk, C E. Johnson, Drago Skrtic, Ming S. Tung, Stephen M. Hsu
Amorphous metal alloys have properties and structures unlike those of theircrystalline counterparts. For example, a multiphase crystalline structure may exhibit poor corrosion resistance while the amorphous structure is corrosion resistant. The high
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