A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
A61C 13/00 (2006.01) A61C 13/003 (2006.01) A61K 6/06 (2006.01) C03C 8/24 (2006.01) A61C 13/083 (2006.01) A61C 13/09 (2006.01)
Patent
CA 2302499
The present invention relates to a method for making artificial tooth bridges consisting of a ceramic densily sintered high strength individual core (B) veneered with porcelain (A) using powder metallurgical methods. According to the method the individual densely sintered bridge parts are joined together to a bridge core with glass, which in molten condition wets the ceramic core material. The glass therefore finds its way into the gap between the bridge parts and reacts with the ceramics so that it during cooling forms a strong joint between the individual densely sintered ceramic bridge parts.
L'invention concerne un procédé de fabrication de bridges dentaires artificiels constitués d'un noyau en céramique séparé (B), à haute résistance et fritté de manière dense, plaqué de porcelaine (A) à l'aide de procédés de la métallurgie des poudres. Selon ledit procédé, les pièces frittées de manière dense sont jointes ensemble à un noyau de bridge à l'aide de verre qui, lorsqu'il est à l'état fondu humidifie le matériau en céramique formant le noyau. Le verre s'infiltre ainsi dans l'espace séparant les pièces du bridge et réagit avec la céramique de sorte qu'il forme, pendant son refroidissement, un joint solide entre les différentes pièces du bridge en céramique frittées de manière dense.
Oden Agneta
Salomonsson Jonas
Gowling Lafleur Henderson Llp
Nobel Biocare Services Ag
Sandvik Ab
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