Abstract: The invention relates to a dental light-curing device (10) provided for dental material to be cured, which comprises a handpiece (20) and a base station, wherein the handpiece (20) has a light source, in particular having a plurality of LED chips (42, 44, 46 and 48), which—with respect to the optical axis—are arranged one next to the other, a control device (22) for the light source and at least one sensor, which is arranged adjacent to the light source, wherein—again with respect to the optical axis—a light guiding device, in particular a light guide rod (12), extends in front of the light source, which light guide rod (12) has a passband for wavelengths which comprises at least blue visible light and, in particular, also green visible light and UV light, and having a selecting device for control programs of the control device (22), in particular a push button on the handpiece (20).
Abstract: A syringe, in particular for viscous or liquid dental materials, provided with a syringe housing 12, in which a plunger 22 is guided for displacement in a manner known, wherein the plunger 22 can be removed from the syringe housing 12 and introduced into the syringe housing 12, and with an outlet cannula 20, which is fitted on the syringe housing 12. A region of the syringe housing 12 which is adjacent to the outlet cannula 20 is of deformable design and a region of the syringe housing 12 which is remote from the outlet cannula 20 is of dimensionally stable design.
Abstract: Glass ceramics having SiO2 as main crystal phase and precursors thereof are described which are characterized by very good mechanical and optical properties and in particular can be used as restoration material in dentistry.
Type:
Grant
Filed:
May 15, 2015
Date of Patent:
August 13, 2019
Assignee:
Ivoclar Vivadent AG
Inventors:
Markus Rampf, Marc Dittmer, Christian Ritzberger, Marcel Schweiger, Wolfram Höland
Abstract: The invention relates to the use of lithium silicate glass ceramics and glasses with rubidium oxide content for coating an oxide ceramic, a metal or an alloy.
Type:
Grant
Filed:
April 8, 2014
Date of Patent:
August 13, 2019
Assignee:
Ivoclar Vivadent AG
Inventors:
Volker Rheinberger, Markus Rampf, Marc Dittmer, Christian Ritzberger, Wolfram Höland, Marcel Schweiger
Abstract: Lithium silicate glass ceramics and glasses containing specific oxides of divalent elements are described which crystallize at low temperatures and are suitable in particular as dental materials.
Type:
Grant
Filed:
September 5, 2017
Date of Patent:
July 23, 2019
Assignee:
Ivoclar Vivadent AG
Inventors:
Christian Ritzberger, Elke Signer-Apel, Wolfram Höland, Volker Rheinberger
Abstract: Radically polymerizable dental material, which contains at least one compound of Formula I: The material preferably additionally contains a radically polymerizable monomer, an initiator for the radical polymerization and filler. It is characterized by a low polymerization contraction stress.
Type:
Grant
Filed:
July 9, 2015
Date of Patent:
July 9, 2019
Assignees:
Ivoclar Vivadent AG, Technische Universität Wien
Inventors:
Norbert Moszner, Urs-Karl Fischer, Iris Lamparth, Peter Burtscher, Robert Liska, Christian Gorsche, Konstanze Seidler, Paul Gauss
Abstract: The invention relates to dental materials which contain at least one compound of Formula I The materials are characterized by very good mechanical properties after curing.
Type:
Grant
Filed:
February 11, 2016
Date of Patent:
June 18, 2019
Assignee:
Ivoclar Vivadent AG
Inventors:
Norbert Moszner, Jörg Angermann, Urs-Karl Fischer, Martina Hauner
Abstract: 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.
Type:
Grant
Filed:
June 27, 2016
Date of Patent:
June 18, 2019
Assignee:
Ivoclar Vivadent AG
Inventors:
Christian Ritzberger, Elke Apel, Wolfram Höland, Volker Rheinberger
Abstract: The present invention is directed to a porous pre-densified CeO2 stabilized ZrO2 ceramic having a density of 50.0 to 95.0%, relative to the theoretical density of zirconia, and an open porosity of 5 to 50% as well as to ceramic having a density of 97.0 to 100.0%, relative to the theoretical density of zirconia, and wherein the grains of the ceramic have an average grain size of 50 to 1000 nm, methods for the preparation of the pre-densified and densified ceramics and their use for the manufacture of dental restorations.
Type:
Grant
Filed:
June 20, 2013
Date of Patent:
June 11, 2019
Assignee:
Ivoclar Vivadent AG
Inventors:
Christian Ritzberger, Frank Rothbrust, Marcel Schweiger, Nicolas Courtois, Jérôme Chevalier, Helen Reveron, Wolfram Höland, Volker Rheinberger
Abstract: Vinylcyclopropane of general formulae I in which X, Y in each case are O or NH, wherein X and Y cannot have the same meaning, R1 is a linear or branched C1-C8-alkyl radical, which can be interrupted by O, S, an ester group or a urethane group, R2 is a linear or branched C2-C10-alkylene radical, which can be interrupted by O, S, an ester group or a urethane group, R3 is a hydrocarbon radical with 1 to 20 carbon atoms, which additionally can contain one or more N, O or S atoms, and n is 1, 2, 3 or 4, preferably 1 or 2. The vinylcyclopropanes are characterized by a low shrinkage and a high reactivity on radical polymerization and are suitable in particular for the preparation of dental materials.
Type:
Application
Filed:
August 1, 2017
Publication date:
June 6, 2019
Applicant:
Ivoclar Vivadent AG
Inventors:
Norbert MOSZNER, Yohann CATEL, Urs Karl FISCHER, Sven TAUSCHER
Abstract: The invention relates to a film clamping element, in particular for carrying out dental treatment in the mouth area of a patient, comprising a vestibular ring (14) and a lip ring (12), between which and optionally beyond which a film (16) extends. The film is held in a stretched manner by the rings, and the film (16) and the rings are elastically deformable, in particular the film and the rings can be pressed together into a substantially oval shape. The invention is characterized in that the vestibular ring (14) has a recess on at least one circumferential point, the width of said recess being greater than the width of a frenulum and smaller than the radius of the vestibular ring (14).
Type:
Grant
Filed:
June 22, 2015
Date of Patent:
May 21, 2019
Assignee:
Ivoclar Vivadent AG
Inventors:
Frank Müller, Lukas Enggist, Nora Christina Kögel
Abstract: Method and system for the construction of a total dental prosthesis, wherein the shapes of the upper and lower jaw bases taken in the plastic material are digitized and stored as a digital prosthesis model in a data-processing device, and the upper and lower jaw prosthesis bases are produced from dental materials according to the digital prosthesis model by ablative or constructive methods.
Type:
Grant
Filed:
November 26, 2013
Date of Patent:
May 21, 2019
Assignee:
Ivoclar Vivadent AG
Inventors:
Markus Heinz, Hans Peter Foser, Wolfgang Ruess, Thomas Baaske
Abstract: A partial dental arch is provided with dentin material and with cutting material and a boundary area therebetween. It comprises a primary-position tooth region and additional tooth regions which are arranged more distally. A wavy structure of the boundary area is provided whose amplitude—when viewed in the distal direction—decreases in at least one section of the mesial-distal and/or occlusal-gingival extension, in particular with regard to the occlusal-gingival direction.
Type:
Application
Filed:
April 18, 2017
Publication date:
May 9, 2019
Applicant:
Ivoclar Vivadent AG
Inventors:
Clemens Andreas Häfele, Konrad Hagenbuch, Harald Kerschbaumer, Karl Lanbacher, Martin Mitterhofer, Martin Bertagnolli, Andreas Facher
Abstract: 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 (10), and wherein this is followed by an end heating-up period (44) 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 (10) is performed after this.
Type:
Grant
Filed:
January 13, 2016
Date of Patent:
April 16, 2019
Assignee:
Ivoclar Vivadent AG
Inventors:
Gottfried Rohner, Walter Pokorny, Robert Grunenfelder, Frank Rothbrust