Ivoclar Vivadent Ag | Date: 2016-10-28
The invention relates to a dental furnace comprising a firing hood equipped with a heating device that is movably supported for the opening and closing of the dental furnace relative to a base intended for receiving a dental restoration part, and further comprising a heat detection device that is directed towards an area above the base, in particular towards one or more dental restoration parts, and further comprising a control or regulating device for the dental furnace that is coupled to the heat detection device, wherein the heat detection device is configured as a thermal imaging camera (30) which is directed towards the area above the base while the firing hood (12) is partially or completely opened, and which feeds an at least two-dimensional image in the form of a matrix of the one or more inserted dental restoration parts (60) to the control or regulating device and/or to a muffle (26) that is intended for the generation of the dental restoration parts (60).
Ivoclar Vivadent Ag | Date: 2016-10-14
In a dental furnace having a firing chamber (12) with a base and at least one receiving portion for dental restoration parts (40). The receiving portion has a plurality of support elements (26) that are arranged adjacent to one another and in particular have the same thickness, wherein said support elements (26) support the dental restoration part (40) during the firing process.
Ivoclar Vivadent Ag | Date: 2016-09-02
Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength.
Ivoclar Vivadent Ag | Date: 2016-06-14
A light curing device for curing dental materials, having a handpiece (14) and a base station (12), wherein the handpiece (14) includes a light source, a light-conducting rod (22), which is attached to the handpiece (14) in particular in a replaceable and detachable manner, and at least one sensor (30) which is positioned in the handpiece (14), wherein the light curing device (10) includes a control device (18) with at least one curing program for polymerizing the dental material. It is characterized in that a mirror (28) with a predetermined reflection parameter with a reflection value of more than 90% is provided, in particular at the base station (12) of the light curing device (10) or at the handpiece (14) of the light curing device (10), and in that the control device (18) includes a calibration program which can be actuated automatically or by user intervention when the light curing device (10) with the front end (24) of the light-conducting rod (22) is directed towards the mirror (28).
Ivoclar Vivadent Ag | Date: 2016-07-20
Radically polymerizable dental material which contains at least one radically polymerizable oligomer or polymer with strongly acidic groups, which has a number-average molecular weight of 1,000 to 200,000 g/mol.
Ivoclar Vivadent Ag | Date: 2016-03-29
The invention relates to a process for preparing dental restorations, wherein a lithium silicate glass ceramic or a lithium silicate glass is used which contains at least 8.5 wt.-% transition metal oxide selected from the group consisting of oxides of yttrium, oxides of transition metals with an atomic number from 41 to 79 and mixtures of these oxides.
Ivoclar Vivadent Ag | Date: 2016-05-17
Lithium disilicate apatite glass-ceramics are described which are characterized by a high chemical stability and can therefore be used in particular as restoration material in dentistry.
Ivoclar Vivadent Ag | Date: 2016-06-27
Lithium silicate glass ceramics and glasses comprising specific oxides of trivalent elements are described which crystallize at low temperatures and are suitable in particular as dental materials.
Ivoclar Vivadent Ag | Date: 2016-06-28
Lithium silicate glass ceramics and glasses containing specific oxides of hexavalent elements are described which crystallize at low temperatures and are suitable in particular as dental materials.
Ivoclar Vivadent Ag | Date: 2016-03-01
The invention shows a dental press furnace comprising a pressing punch (36) which acts on a green product (32) made of in particular a ceramic masspossibly by means of an interposed ram (28), the green product (32) being guided in a press channel (30) which is configured in a muffle (24), and a pressure, distance and/or speed sensor detecting at least one motion parameter of the pressing punch (36), and comprising a control device for controlling the pressing process based on the output signal of the sensor, the trigger criterion for the start of the pressing process being a change of at least one motion parameter of the pressing punch upon heating and/or softening of the green product which change is detected by means of the sensor.