Ivoclar Vivadent Ag

Shade Analyzing Technologies, Inc.

Walter Pokorny

Gottfried Rohner

Robert Grünenfelder

Wolfgang Josef Wachter

Philipp Kettner

Harald Kerschbaumer

Rudolf Jussel

Frank Müller

Frank Rothbrust

Jörg Ebert

Johannes Lorünser

Graham Pye

Michael Brotzge

Klaus Galehr

Markus Lichtensteiger

Ralf Suffel

Andreas Reindl

Werner Längle

Robert Gruenenfelder

Werner Kindle

Fabio Gfeller

Joerg Ebert

The invention shows a material provision device for a stereolithography apparatus to provide print material (), in particular a photopolymer, to be cured, wherein the material provision device () surrounds an in particular limp material cartridge () which receives the print material () on all sides and (UV) light-proof, and the material cartridge () comprises an outlet () via which the print material () may be dispensed and which is received in a connection () or a spout in the material provision device () and is at least partially supported thereon or therein or seals against it.

Material provision device for a stereolithography apparatus

In a stereolithography apparatus a material provision device for print material () to be cured, in particular a photopolymer, is provided. The material provision device () receives a material cartridge () which in turn receives the print material () and surrounds it on all sides. The material cartridge () may be connected to an outlet valve unit () in a liquid-proof manner via which the print material () may be output and which is received at least partially in the material provision device () and which is supported at least partially thereon or therein or sealed against it. The outlet valve unit () comprises a valve () which is opened and closed depending on the relative position, in particular the swiveling position, of material provision device () and stereolithography apparatus.

Stereolithography apparatus material provision device

The invention relates to a dental furnace wherein a firing chamber is heated up in a first heating-up period at a first heating-up rate of more than 501 K/min, in particular more than 1001 K/min, which heats the furnace to at least 10001 C., in particular to 1100-12501 C. The first heating-up period is followed by an intermediate heating period, which is at least five minutes long, in particular at least ten minutes long, the gradient or heating-up rate of which is adapted to the material to be sintered in the dental furnace (), and wherein this is followed by an end heating-up period () during which heating up is effected at a heating-up rate of more than 301 K/min, in particular approximately 501 K/min, and wherein during this the furnace temperature is held for at least five minutes, in particular for at least 25 minutes, above the temperature toward the end of the first heating-up period, and wherein forced cooling of the furnace () is performed after this.

Dental furnace

In a dental furnace or dental press furnace comprising a furnace base () which is provided with a supporting surface for at least one dental restoration part, a furnace head () is provided which is connected to the furnace base () via a joint device () attached to the furnace base () and which is pivotable relative to the furnace base () via said device. Pivoting takes place about a pivot axis () which extends substantially parallel to the supporting surface, as well as a motor () which acts on the joint device () for the pivotable movement of the furnace head (). The pivot axis () extends outside of the furnace head () and outside of the joint device ().

Pivot mechanism for furnace head

The invention relates to a dental furnace wherein a firing chamber is heated up in a first heating-up period at a first heating-up rate of more than 501 K/min, in particular more than 1001 K/min, which heats the furnace to at least 10001 C, in particular to 1100-12501 C. The first heating-up period is followed by an intermediate heating period, which is at least five minutes long, in particular at least ten minutes long, the gradient or heating-up rate of which is adapted to the material to be sintered in the dental furnace (), and wherein this is followed by an end heating-up period () during which heating up is effected at a heating-up rate of more than 301 K/min, in particular approximately 501 K/min, and wherein during this the furnace temperature is held for at least five minutes, in particular for at least 25 minutes, above the temperature toward the end of the first heating-up period, and wherein forced cooling of the furnace () is performed after this.

The invention relates to a device for production of dental molded parts from a polymerizable plastic, with a flask () and with a heating device () for heating the polymerizable plastic in the flask (). The heating device () is movable relative to the flask ().

Device and method for production of dental molded parts

Cuvette system

Firing plate for a dental furnace

The invention relates to a dental furnace wherein a firing chamber is heated up in a first heating-up period at a first heating-up rate of more than 50&#xb0; K/min, in particular more than 100&#xb0; K/min, which heats the furnace to at least 1000&#xb0; C., in particular to 1100-1250&#xb0; C. The first heating-up period is followed by an intermediate heating period, which is at least five minutes long, in particular at least ten minutes long, the gradient or heating-up rate of which is adapted to the material to be sintered in the dental furnace (), and wherein this is followed by an end heating-up period () during which heating up is effected at a heating-up rate of more than 30&#xb0; K/min, in particular approximately 50&#xb0; K/min, and wherein during this the furnace temperature is held for at least five minutes, in particular for at least 25 minutes, above the temperature toward the end of the first heating-up period, and wherein forced cooling of the furnace () is performed after this.

Dental oven

Growing community of inventors

Gais, Austria

Walter Pokorny