Manufacturing Industry
Toughening dental ceramics.(BIOMATERIALS)
Advanced Ceramics Report, February, 2008
Agroup led by Claus Daniel of Oak Ridge National Laboratory's Materials Science and Technology Division, USA, has discovered that a high-speed periodic laser treatment of dental grade ceramics alters the surface structure.
"Nowadays, cracks begin at the interface between ceramic and remaining tooth or metallic anchor and grow to create a fatal crack and failure of the tooth," Daniel said. "We need to inhibit those cracks from being initiated."
The proprietary technique being developed by Daniel and partners at University of Illinois at Chicago, Boston University and University of Tennessee, all USA, controls the shape and the microstructure creating nanocrystalline material with up to 50% increase in flexure strength, adding only pennies to a product...
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