EP2309947A1 - Procédé pour produire une céramique dentaire oxydée - Google Patents

Procédé pour produire une céramique dentaire oxydée

Info

Publication number
EP2309947A1
EP2309947A1 EP09777509A EP09777509A EP2309947A1 EP 2309947 A1 EP2309947 A1 EP 2309947A1 EP 09777509 A EP09777509 A EP 09777509A EP 09777509 A EP09777509 A EP 09777509A EP 2309947 A1 EP2309947 A1 EP 2309947A1
Authority
EP
European Patent Office
Prior art keywords
oxide
dimensional shape
negative mold
feedstock
female mold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09777509A
Other languages
German (de)
English (en)
Inventor
Jürgen HAUSSELT
Regina Knitter
Hans-Joachim Ritzhaupt-Kleissl
Werner Bauer
Joachim R. Binder
Nadja Schlechtriemen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Karlsruher Institut fuer Technologie KIT
Original Assignee
Karlsruher Institut fuer Technologie KIT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Karlsruher Institut fuer Technologie KIT filed Critical Karlsruher Institut fuer Technologie KIT
Publication of EP2309947A1 publication Critical patent/EP2309947A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A61C13/0004—Computer-assisted sizing or machining of dental prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/08—Artificial teeth; Making same
    • A61C13/081—Making teeth by casting or moulding
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/111—Fine ceramics
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
    • C04B35/486—Fine ceramics
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/0615—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances the burned-out substance being a monolitic element having approximately the same dimensions as the final article, e.g. a porous polyurethane sheet or a prepreg obtained by bonding together resin particles
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00836—Uses not provided for elsewhere in C04B2111/00 for medical or dental applications
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/602—Making the green bodies or pre-forms by moulding
    • C04B2235/6022—Injection moulding
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/602—Making the green bodies or pre-forms by moulding
    • C04B2235/6026—Computer aided shaping, e.g. rapid prototyping
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
    • C04B2235/9615—Linear firing shrinkage
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/963—Surface properties, e.g. surface roughness
    • C04B2235/9638—Tolerance; Dimensional accuracy
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
    • G16H20/00—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance
    • G16H20/40—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture

Definitions

  • the invention relates to a process for the production of oxide ceramic dentures.
  • the present invention is in the field of manufacturing of ceramic dental prostheses from oxide ceramics such as alumina or zirconium dioxide.
  • oxide ceramics such as alumina or zirconium dioxide.
  • This Mate ⁇ altex distinguishes itself from other ke ⁇ ramischen or glass-ceramic materials with high strength and good chemical stability.
  • a disadvantage of the oxide ceramics is their production via a powder technology molding process and subsequent sintering, which has a shrinkage up to the dense ceramics of up to 50 vol.% Result. Only since the establishment of CAD / CAM technologies is it possible to produce dental prostheses from materials of this class in practice by means of a mathematical correction of the dimensions of the desired shape. An overview of the practical use of CAD / CAM systems can be found in the article Fabric for Machine Helpers, dental dialogue, p. 52, 2005.
  • the mold to be produced is milled from an oxide ceramic blank.
  • the erosion used here inevitably leads to a loss of material which, depending on the material composition and size of the denture, can amount to up to 90% by volume. This material is lost because it can not be worked up yet.
  • Electrophoretic deposition has hitherto been carried out predominantly for the production of inflation ceramics.
  • metallic powders are deposited and subsequently oxidized by means of EPD to compensate for the sintering fuming, in which case a subsequent glass infiltration is required to close the resulting pores.
  • DE 10 2004 018 136 B3 and also in DE 102 32 135 Al expanding stump materials are used for the production of densely sintered oxide ceramics in order to compensate for the occurring sintering fuming.
  • the EPD due to the process, only uniform layers can be produced; However, no complex geometry, as it represents a dental prosthesis, produce, ie it is always a second-consuming manual reworking required.
  • a method is to be provided which enables the production of oxidic dental ceramics without material loss or with only a very slight material loss.
  • this method should offer the possibility of producing complex geometries and very fine crown margins.
  • the present invention achieves the stated object by a process chain which comprises low-pressure injection molding, hot-casting or centrifugal molding as an essential process step.
  • a process chain which comprises low-pressure injection molding, hot-casting or centrifugal molding as an essential process step.
  • the three-dimensional shape or its negative mold must be made correspondingly larger.
  • the desired shape of the dental ceramic is present as numerical data, for which all methods known from dentistry or dental technology can be used.
  • a erfmdungsgelautes method accordingly comprises the following process steps a) to e).
  • oxidic dental ceramics are understood in relation to the present invention both dentures and dental fillings.
  • step a) numerical data of the three-dimensional shape of the desired oxidic dental ceramic, which are usually present as CAD data, form the starting point for the present production method.
  • the CAD data can be obtained here by means of an impression reduction with subsequent modeling or from an intraoral data acquisition. Subsequently, according to the expected later sintering, the dimensions of the three-dimensional shape are numerically enlarged and are then usually available as CAD data.
  • a master model of the enlarged three-dimensional shape from method step a) is first produced, which preferably consists of plastic, wax or a metal.
  • generative methods such as 3D printmg or ablation methods such as CAD / CAM are used for this purpose.
  • a negative mold is now produced from the original model.
  • this shape is designed such that it consists of two, three, four or more parts.
  • the negative mold itself is preferably made of a plastic or silicone.
  • a so-called feedstock which contains an oxide-ceramic powder, wax and / or paraffin and optionally further additives is introduced into the negative mold produced according to process step c), which consists of two, three, four or more parts .
  • the introduction is preferably carried out by low-pressure injection molding at a pressure of 0.01 to 10 MPa, preferably from 0.1 to 2 MPa, and at a temperature of 60 0 C to 150 0 C, preferably from 70 0 C to 120 0 C, especially preferably from 80 0 C to 100 0 C.
  • non-pressure casting, hot casting, or Zentnfugalabformung is suitable as a method.
  • step e) the molding is removed from the negative mold and thermally, chemically and / or supercritically debinded and the debinded molding then sintered to a dense oxide dental ceramic.
  • Very fine crown margins and complex geometries can be produced with this method.
  • a direct coloring of dental ceramic in dental ground clays is possible by suitable additives in the feedstock.
  • This master model was instigated with wax wires (diameter 0.5 - 5 mm) in a special holder to later feed the mass into an evacuated cavity and thus a complete fulfillment of the same.
  • the incised model was filled with an addition-curing silicone in such a way that finally a two-part negative form was created.
  • the multi-part nature of the silicone mold facilitated the final formability of the molds.
  • the SiIikon negative mold was preheated after curing and cleaning to a molding temperature of 100 ° C in a specially manufactured multipart and lockable metal capsule. The linear thermal expansion of the silicone was taken into account in the production of the silicone negative mold in such a way that the silicone negative mold was embedded in the metal capsule without stress and deformation at the corresponding molding temperature.
  • a melt-containing thermoplastic binder mixture contained a mixture of two paraffins in a ratio of 20% by weight to 70% by weight; the 100% by weight supplemental portion formed a dispersing aid.
  • the rheological behavior of the hot casting composition was characterized by a rheometer using a plate-plate-25 measurement setup.
  • the gap width between the two plates was 0.5 mm; it was controlled shear stress at a regulated peltier temperature of 90 0 C to 3000 Pa measured.
  • the produced hot casting compound had a dynamic viscosity of 6.95 Pas at a shear rate of 100 s -1 .
  • the mass was filled into the supply container of an injection facility and kept at a processing temperature of 100 0 C.
  • the required injection pressure was applied to the injection system by means of a hand lever press.
  • Formulation was carried out under vacuum at an injection pressure of 0.49 MPa for 30 seconds and a holding pressure of 0.59 MPa for a further 30 seconds.
  • the specimen thus prepared was removed from the mold after cooling, thermally debinded at a temperature up to 400 0 C and at 1650 0 C over 3 Sintered for hours. After sintering, the specimen was in
  • Table 1 Average values of the measured dimensions in length and width and resulting linear shrinkage between the prototype and the sintered component of alumina:
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the preparation of the silicone negative mold was carried out as in Example 1 except that the final preheating temperature of the silicone mold 70 0 C was used instead of 100 ° C.
  • 49.4% by volume of a Yttrium partially stabilized zirconium oxide (3 mol% yttrium oxide) were incorporated into a melt-flowable thermoplastic binder mixture.
  • the binder mixture contained at least 90% by weight of paraffin; the 100% by weight supplemental portion formed a dispersing aid.
  • the rheological behavior of the molding composition was characterized in the same manner as in Example 1.
  • the produced hot casting compound had a dynamic viscosity of 13.9 Pa * s at a shear rate of 100 s -1 .
  • the specimen thus prepared was removed from the mold after cooling, thermally debinded at a temperature up to 400 0 C and sintered at 1450 0 C for 1 hour. After sintering, the specimen was measured in length and width as in Example 1. The measured values obtained were each averaged and the linear shrinkage between prototype and sintered part was calculated. The measured values determined in this way are listed in Table 2.
  • Table 2 Average values of the measured dimensions m Long and wide and resulting linear shrinkage between the prototype and the sintered component made of partially stabilized zirconium oxide:

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Inorganic Chemistry (AREA)
  • Composite Materials (AREA)
  • Dental Prosthetics (AREA)

Abstract

La présente invention concerne un procédé pour produire une céramique dentaire oxydée qui comprend les étapes consistant à a) fournir des données numériques de la forme en 3D d'une céramique dentaire oxydée à préparer ainsi qu'un agrandissement numérique des dimensions de la forme en 3D correspondant au retrait de frittage attendu ultérieurement, b) à produire un modèle maître de la forme en 3D agrandie au moyen d'un procédé génératif ou par enlèvement, c) produire une forme négative en copiant le modèle maître, la forme négative étant agencée de manière à se composer d'au moins deux parties, d) introduire une matière première contenant une poudre de céramique d'oxyde dans la forme négative à une température comprise entre 60 °C à 150 °C, e) démouler de la forme négative un moulage refroidi, effectuer le déliantage et le frittage final du moulage ayant subi un déliantage pour obtenir une céramique dentaire oxydée. Avec ce procédé, les pertes de matériau sont très réduites, voire nulles. Ce procédé permet de produire des bords coronaires très fins ainsi que des géométries complexes. Il est possible d'obtenir une coloration directe de la céramique dentaire dans les principales teintes dentaires en ajoutant des additifs appropriés dans la matière première. Le recours à un moulage par injection basse pression notamment permet de réduire considérablement les frais d'équipement.
EP09777509A 2008-08-06 2009-07-29 Procédé pour produire une céramique dentaire oxydée Withdrawn EP2309947A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008036661A DE102008036661A1 (de) 2008-08-06 2008-08-06 Verfahren zur Herstellung von oxidischer Zahnkeramik
PCT/EP2009/005481 WO2010015350A1 (fr) 2008-08-06 2009-07-29 Procédé pour produire une céramique dentaire oxydée

Publications (1)

Publication Number Publication Date
EP2309947A1 true EP2309947A1 (fr) 2011-04-20

Family

ID=41130134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09777509A Withdrawn EP2309947A1 (fr) 2008-08-06 2009-07-29 Procédé pour produire une céramique dentaire oxydée

Country Status (3)

Country Link
EP (1) EP2309947A1 (fr)
DE (1) DE102008036661A1 (fr)
WO (1) WO2010015350A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010064142B4 (de) * 2010-12-23 2019-06-13 BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co. KG Einbettmasse zur Verwendung in einem Verfahren zur Herstellung einer Dental-Restauration mittels CAD-Cast-Verfahren
FR3072894B1 (fr) * 2017-10-27 2021-04-02 Inst Mines Telecom Procede de controle des dimensions d’une piece frittable au cours de son frittage

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP1543797A1 (fr) * 2003-12-17 2005-06-22 DeguDent GmbH Méthode de fabrication d'une structure dentaire en céramique

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DE19703177C2 (de) 1997-01-29 2003-01-30 Fraunhofer Ges Forschung Verfahren zur Herstellung von keramischen oder pulvermetallurgischen Bauteilen
US20050023710A1 (en) * 1998-07-10 2005-02-03 Dmitri Brodkin Solid free-form fabrication methods for the production of dental restorations
EP1124500A1 (fr) * 1999-09-02 2001-08-22 JENERIC/PENTRON Incorporated Procede de fabrication de restaurations dentaires
JP4860868B2 (ja) * 1999-12-07 2012-01-25 ツェ．ノヴェイション ゲーエムベーハー セラミック製の高強度歯科修復物の製造方法
DE10044605A1 (de) 2000-09-08 2002-04-04 Karlsruhe Forschzent Formmasse, deren Verwendung und Verfahren zur Herstellung eines oxidkeramischen Sinterkörpers
DE10049974A1 (de) 2000-10-06 2002-04-11 Wieland Edelmetalle Verfahren zur Herstellung von keramischen Formteilen und dentales Formteil
EP1346702A1 (fr) 2002-03-21 2003-09-24 Metalor Technologies SA Procédé de réalisation d'une reconstruction dentaire en céramique
DE10232135A1 (de) 2002-07-12 2004-01-22 Wieland Dental + Technik Gmbh & Co. Kg Modellmaterial für zahntechnische Zwecke sowie dessen Herstellung und Verwendung
DE10337688B3 (de) 2003-08-16 2005-03-17 Forschungszentrum Karlsruhe Gmbh Verfahren zur Herstellung von keramischen Strukturen und nach diesem Verfahren hergestellte keramische Strukturen
DE102004018136B3 (de) 2004-04-08 2005-09-22 C. Hafner Gmbh + Co. Modellmaterial für zahntechnische Zwecke sowie dessen Herstellung und Verwendung
CA2580374C (fr) * 2004-09-14 2014-11-18 Oratio B.V. Procede de fabrication et d'installation d'un implant dentaire ceramique avec une partie d'appui d'implant esthetique
DE102005055526A1 (de) * 2005-11-22 2007-06-06 BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co. KG Verfahren und System zum Erzeugen einer dentalen Prothese
DE102006061143A1 (de) * 2006-12-22 2008-07-24 Aepsilon Rechteverwaltungs Gmbh Verfahren, computerlesbares Medium und Computer betreffend die Herstellung von Zahnersatzteilen

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Publication number Priority date Publication date Assignee Title
EP1543797A1 (fr) * 2003-12-17 2005-06-22 DeguDent GmbH Méthode de fabrication d'une structure dentaire en céramique

Non-Patent Citations (1)

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Title
See also references of WO2010015350A1 *

Also Published As

Publication number Publication date
WO2010015350A1 (fr) 2010-02-11
DE102008036661A1 (de) 2010-02-11

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