A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
A61C 13/08 (2006.01) A61C 13/00 (2006.01)
Patent
CA 2400383
The present invention is directed to enhancing the accuracy with which tooth restorations (504) are machined, using a device (100) which can accurately copy mill a dental prosthetic blank from a previously formed dental prosthetic model, and which can closely replicate the feel of a dental tool to which dentists are accoustomed. The device includes a rotatable holding fixture (104) for holding the model to be copied and a second rotatable holding fixture (304) for holding the blank to be milled. The device further includes an upper beam assembly (204) for linear, rotary motion on a linear rotary axis for holding tracing stylus (118) and parallel tool cutting member in mount (202). A mill blank having an outer ceramic and inner resin of a lesser hardness so as to be milled is disclosed.
La présente invention concerne l'amélioration de la précision avec laquelle des restaurations dentaires sont travaillées, au moyen d'un dispositif qui peut copier et fraiser avec précision une ébauche de prothèse dentaire à partir d'un modèle de prothèse dentaire constitué antérieurement et qui peut répliquer avec précision la sensation d'un outil dentaire auquel les dentistes sont habitués. Le dispositif utilise un outil porté par un axe rotatif linéaire pour fraiser l'ébauche de prothèse dentaire. En outre, des modes de réalisation exemplaires concernent la préparation d'une ébauche de prothèse dentaire hybride qui peut facilement être travaillée.
Hajjar Victor J.
Studer John R.
Hajjar Victor J.
Smart & Biggar
Studer John R.
LandOfFree
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