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EP3463177A1 - Coque céramique pour prothèse dentaire et procédé de fabrication d'une coque céramique pour prothèse dentaire - Google Patents

Coque céramique pour prothèse dentaire et procédé de fabrication d'une coque céramique pour prothèse dentaire

Info

Publication number
EP3463177A1
EP3463177A1 EP17725261.6A EP17725261A EP3463177A1 EP 3463177 A1 EP3463177 A1 EP 3463177A1 EP 17725261 A EP17725261 A EP 17725261A EP 3463177 A1 EP3463177 A1 EP 3463177A1
Authority
EP
European Patent Office
Prior art keywords
ceramic
ceramic shell
dental
shell
viscous
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Withdrawn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
EP17725261.6A
Other languages
German (de)
English (en)
Inventor
Joachim Meyer
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.)
Bredent GmbH and Co KG
Original Assignee
Bredent GmbH and Co KG
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 Bredent GmbH and Co KG filed Critical Bredent GmbH and Co KG
Publication of EP3463177A1 publication Critical patent/EP3463177A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • A61C13/0022—Blanks or green, unfinished dental restoration parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/20—Repairing attrition damage, e.g. facets
    • 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
    • A61C13/0006—Production methods
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/70—Tooth crowns; Making thereof
    • A61C5/77—Methods or devices for making crowns

Definitions

  • Ceramic shell for the production of dental prostheses and method for producing a ceramic shell for dentures are provided.
  • the invention relates to a ceramic shell for the production of dental prostheses and a method for producing a ceramic shell for dental prostheses, in particular for veneering a dental framework or as a full ceramic dentures.
  • WO 2007/028 787 A1 discloses ceramic dentures and a method for the production thereof.
  • dentures in particular in the form of a composite crown or a composite bridge is described, which consists of two independent components, which are formed as an inner framework structure and outer veneer, which by a
  • the Konnektormasse is liquid at room temperature or at least viscous to simplify the processing.
  • a method for producing a functional dental element in which layers of a suitable ceramic material, which is a powder, are applied successively.
  • a binder is applied to each layer of powder at desired positions by means of a three-dimensional printing technique to bond each layer of powder to the previous layer, thereby allowing the removal of excess, non-adherent powder.
  • the dental element thus formed is subjected to a sintering step and the sintered Element is infiltrated by a second phase.
  • the sintering step may also be followed by a delivery step.
  • DE 10 2009 051 593 A1 discloses a bonding agent between an oxide ceramic and a veneering material, in particular for dental purposes.
  • a primer in the form of a mixture of silicate ceramics and quartz is applied as a sol to be veneered and not yet dense sintered body of oxide ceramics or their starting materials.
  • the base body is finally sintered with the knitted bonding agent and then the veneering material is applied.
  • high-strength dental crowns or bridges can be produced.
  • EP 0 826 642 A2 describes the production of a ceramic dental prosthesis crown or a ceramic denture shell in which a slurry is formed into a thin layer, this thin layer is placed on a plaster mold, dried layer by layer and after application of all required layers the blank is sintered.
  • the object of the invention is to provide a ceramic shell in anatomical form for the production of dental prostheses or to provide a method for producing a ceramic shell for dental prostheses, which allow a simple processing of the ceramic shell.
  • an anatomically preformed ceramic shell for the production of dental prostheses in particular for veneering a dental device or as a full ceramic dentures specified, which is made as a green compact of a ceramic powder and a binder system and the ceramic shell on a body as a whole without loss of the characteristic anatomical shape is anaptable, especially in border areas.
  • Starting point is a customary dental ceramics, such.
  • Example an oxide, silicate or glass ceramic and other technical ceramics, which are adapted in terms of their thermal expansion coefficient to the appropriate application.
  • the ceramics to be used are produced by powder metallurgy from a suitable glass frit and ground and treated with a corresponding binder system in a stirrer to a slurry pasty.
  • a special feature of the ceramic shell according to the invention is therefore the dosage form as Schlickerkeramik, so that a flexible ceramic is provided, which can be adapted plastically shaping prior to firing.
  • the shape curve at the preparation border .
  • the shaping process for forming the anatomical shape has already been completed, resulting not only in time or cost savings, but in particular improved reproducibility and easier integration into a treatment procedure.
  • the ceramic shell is anadaptierbar without loss of anatomical shape to a support or a framework, so that minor adjustments are still possible even after shaping.
  • characteristic anatomical shape is understood here to mean that the ceramic shell already has the final shape, apart from the shrinkage that normally occurs during the sintering process
  • Sintering shrinkage can be taken into account in the manufacture of the ceramic shell by means of a suitable method, which however does not form part of the present invention. It should be noted in particular that the sintering shrinkage does not have to be linear with respect to the three spatial axes in all cases.
  • the green compact is monochrome or polychrome.
  • plastically deformable monochrome or polychrome ceramic veneers which are present as unfired shaped body.
  • polychrome ceramic shells it is possible to adapt the color of the dental prosthesis to be formed, for example, in the dentin area.
  • the green compact can be connected to the dental framework or a refractory molded body by means of a viscous ceramic filling compound, in particular a ceramic sol.
  • a viscous ceramic filling compound in particular a ceramic sol.
  • the flexible ceramic shell is back-injected after shaping adaptation to the veneer framework or another dimensionally stable molded body with a viscous ceramic filling compound.
  • the filling compound can be provided as a ceramic sol with high viscosity. By pressing on the veneer or the refractory form body excess filler is pushed out, so that any voids or air pockets are filled.
  • the ceramic filling compound serves as a balancing mass z.
  • the filling material functions here functionally to compensate undercuts and different gap mass, as they would cause unwanted sink marks on the anatomically shaped vestibular area.
  • the viscous ceramic filling compound is accompanied by UV initiators for light polymerization.
  • the ceramic filling compound has thixotropic properties.
  • a conventional powder-ceramic-water mixture can be applied with a brush or a corresponding ceramic sol with thixotropic properties can be provided.
  • the viscous ceramic filling material causes a color matching. Accordingly, there is the additional possibility with a tooth-colored, chromatic coloring to make a subsequent natural color adjustments of the ceramic shell and its basic color.
  • the ceramic shell has a tooth-coloring property.
  • the ceramic shell is here not only formed as a thin shell, as was already known in the prior art, but represents a significant Antel of the veneer, so that a tooth color on the ceramic shell can be fixed.
  • a method for producing a ceramic shell for dental prostheses in particular for veneering a dental framework or as a full ceramic denture, which comprises the following steps, is also specified.
  • a Keramikschiickers takes the forms of Keramikschiickers to a slurry film, as well as a possible pre-drying of the slip film to adjust the degree of moisture and thus the required viscosity.
  • pressing the slurry film for example, in a film form as a negative mold to form a concave flexible ceramic shell follows a removal of the flexible ceramic shell in the form of a green body.
  • the shaping of the ceramic sheeting can be carried out in such a way that two adjacent or superimposed slip films are formed, which have different colors or transparency, so that the resulting slurry film has monochrome or polychrome properties.
  • the molding process of the ceramic joiner is based on different way possible.
  • the Keramikschiicker can be produced by injection molding or embossing, but it is also possible to apply the Keramikschiickers on a structured carrier film or silicone mold. It is also possible to use mixed forms from the shaping processes in order to shape the ceramic foamer accordingly.
  • the wet slurry film may pass through a drying zone to adjust the moisture level so that the slurry film becomes pasty and easily moldable.
  • the slurry film can be created on the basis of the degree of moisture with the viscosity which is adapted to the desired further processing and application.
  • a downstream structural roller of the slurry can be pressed into the forming embossed film as a negative mold to achieve a slightly concave tooth-shell shape of the ceramic shell.
  • Typical layer thicknesses are 0.1 to 2 mm, wherein, as already mentioned above, different ceramic materials can be used with a suitable binder system.
  • Fig. 1 shows an arrangement for producing an inventive
  • FIG. 2 shows the arrangement of FIG. 1 in a plan view
  • FIG. Fig. 3 shows a ceramic shell according to the invention together with a
  • Verblendgerüst shows a ceramic shell according to the invention together with a
  • an arrangement 1 is described below, with which ceramic shells according to the invention can be produced.
  • a suitable ceramic is applied with a binder system as aqueous or pasty Schlicker on slot dies on a structured carrier film 4 as a negative mold.
  • the two Schlickertrichter 2 and 3 are filled with differently colored Keramikschiicker, which can cause, for example, in the enamel and Dentin Scheme for a different color.
  • FIG. 2 shows a plan view of the structured carrier foil 4 in the area of the slip funnels 2 and 3 and of the structure roller 5. It can be seen that the carrier foil 4 has, for example, an embossed labial surface of front teeth has as a structure, which are provided in Fig. 2 by the reference numeral 7.
  • the Schlickertrichter 2 and 3 are a first Keramiksehl icker 8 and a second Keramikschiicker 9 from which, as shown in Fig. 2, are arranged side by side.
  • the two ceramic slip 8 and 9 are formed into a slurry film, which forms the concave flexible ceramic shell 10 by being pressed into the film shape.
  • the ceramic foamer 8 or 9 can also be applied by means of injection molding or embossing or can be converted into injection or injection-compression molding as a shaping process by means of a ceramic sprinkler.
  • the concave flexible ceramic shell 10 could also be produced by means of deep-drawing or by introduction into mold plates designed as foils.
  • a veneer framework 1 1 is shown schematically, which has a corresponding convex facing surface 12.
  • the anatomically preformed ceramic shell 10 is placed on this convex veneer surface 12.
  • the ceramic shell 10 has a concave contact surface 13, wherein a gap 14 is present between the concave contact surface 13 and the convex veneering surface 12.
  • the opposite side of the ceramic shell 10 represents the vestibular, anatomical tooth shape 15.
  • the gap 14 between the convex veneer surface 12 of the veneer frame 1 1 and the concave contact surface 13 of the ceramic shell 10 is provided by means of a ceramic filler, which is typically provided as a ceramic sol , eliminated.
  • the gap 14 between the concave contact surface 13 of the ceramic shell 10 and the convex veneer surface of the framework 11 is provided by means of a ceramic filling compound, which is typically provided as a ceramic sol. miniert.
  • the viscous ceramic filling material acts as a balancing mass, and can compensate for different gap dimensions and undercuts between the ceramic shell 10 and the veneer frame 1 1 accordingly.
  • the ceramic filling compound i. the ceramic / glass sol is here to compensate for unequal gap dimensions or undercuts of the framework or of the molded body as a refractory mass, in order to avoid the resulting sink marks on the ceramic shell 10 and the anatomical outer surface 15.
  • the ceramic shell 10 is back-injected after a shaping adaptation to the veneer frame 1 1 with the viscous ceramic filling compound and pressed onto the veneer frame 1 1, so that the excess filling material is pressed out.
  • the ceramic filling compound can also have a coloring property, so that the ceramic shell 10 can be adapted with regard to its basic color.
  • the shape of the shape for example, at the preparation border by bending and cutting can thus be adjusted individually.
  • the use of the viscous ceramic filling compound prevents an uncontrolled change in shape of the vestibular anatomical tooth form 15 due to sink marks caused by undercuts of the underlying framework or of the carrier.
  • An uneven gap 14 would be transferred to the vestibular anatomical tooth shape 15 so that the key used as a veneer Ramikschale 10 would be attached with a modified outer shape of the veneer or the carrier.
  • a second embodiment is shown.
  • the ceramic shell 10 is not applied to a veneer structure but on a refractory molded body 16 as a carrier.
  • the further process control or attachment is identical.
  • the ceramic shell 10 can be used both for the formation of all-ceramic dentures as well as for the veneering of a dental framework.
  • the ceramic shell 10 produced as a foil ceramic is elastic and can thus be adapted individually to the three-dimensional shape profile of the preparation boundary by bending and cutting. It is in principle possible to add to the ceramic sol a suitable UV initiator for light polymerization in order to fix the ceramic shell 10, which is subsequently plastically adapted to the framework or support in the mold, until the first firing.
  • the remaining open spaces of the framework can then be conventionally veneered with a conventional powder-ceramic-water mixture with a ceramic brush, or be completed with a thixotropic ceramic sol in the desired tooth shape.
  • the approximal areas and the incisal strip can be constructed with suitable effect masses in order to compensate for this shrinkage together with the green building during the first firing.
  • the use of the industrially manufactured flexible ceramic shell offers the considerable advantage of the very homogeneous ceramic structure, which leads to a uniform shrinkage.
  • the manual, anatomical layering has the significant disadvantage that here portionally finds a mixed in different viscosity and solid / water content powdered ceramic application, which then leads to different degrees of shrinkage and cracking.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Prosthetics (AREA)
  • Dental Preparations (AREA)

Abstract

L'invention concerne une coque céramique (10) destinée à la fabrication d'une prothèse dentaire, et un procédé de fabrication d'une coque céramique pour prothèse dentaire, notamment pour facette d'une infrastructure dentaire (11) ou en tant que prothèse dentaire tout céramique, la coque céramique (10) étant réalisée en tant que corps cru à partir de poudre céramique et d'un système liant de manière à ce que la coque céramique permette l'adaptation à un corps de manière apte à la déformation flexible et apte à l'adaptation plastique.
EP17725261.6A 2016-05-23 2017-05-23 Coque céramique pour prothèse dentaire et procédé de fabrication d'une coque céramique pour prothèse dentaire Withdrawn EP3463177A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016109447.1A DE102016109447A1 (de) 2016-05-23 2016-05-23 Keramikschale zur Herstellung von Zahnersatz und Verfahren zur Herstellung einer Keramikschale für Zahnersatz
PCT/EP2017/062467 WO2017202867A1 (fr) 2016-05-23 2017-05-23 Coque céramique pour prothèse dentaire et procédé de fabrication d'une coque céramique pour prothèse dentaire

Publications (1)

Publication Number Publication Date
EP3463177A1 true EP3463177A1 (fr) 2019-04-10

Family

ID=58765850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17725261.6A Withdrawn EP3463177A1 (fr) 2016-05-23 2017-05-23 Coque céramique pour prothèse dentaire et procédé de fabrication d'une coque céramique pour prothèse dentaire

Country Status (4)

Country Link
US (1) US20190209275A1 (fr)
EP (1) EP3463177A1 (fr)
DE (1) DE102016109447A1 (fr)
WO (1) WO2017202867A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2817758T3 (es) 2016-05-23 2021-04-08 Bredent Gmbh & Co Kg Método para la fabricación de prótesis dentales
EP3593753A1 (fr) * 2018-07-09 2020-01-15 VITA-ZAHNFABRIK H. Rauter GmbH & Co. KG Corps moulé multicouche
CN115958680B (zh) * 2023-02-10 2025-01-03 十维(广东)科技有限公司 一种3d打印陶瓷随形模具的设计方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10234994A1 (de) * 2002-07-31 2004-02-12 Gerhard Bruckner Zahnverblendung und Vorrichtung zur Aufbringung einer Zahnverblendung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5346397A (en) * 1993-06-15 1994-09-13 Braiman Kenneth S Process for making ceramic dental crowns
DE29506554U1 (de) * 1995-04-18 1995-08-03 Linde, Ralf, 88074 Meckenbeuren Auflageplatte für Keramikpulver
KR100203378B1 (ko) * 1996-08-31 1999-06-15 박원훈 도재내관의 제조방법
NL1012897C2 (nl) 1999-08-24 2001-02-27 Tno Werkwijze voor het maken van een tandheelkundig element.
WO2001015620A1 (fr) * 1999-09-02 2001-03-08 Jeneric/Pentron Incorporated Procede de fabrication de restaurations dentaires
DE102004052365B4 (de) * 2004-10-28 2010-08-26 BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co. KG Verfahren zur Herstellung eines Rapid-Prototyping-Modells, eines Grünlings, eines Keramikbauteils und eines metallischen Bauteils
WO2007028787A1 (fr) 2005-09-05 2007-03-15 Ivoclar Vivadent Ag Prothese dentaire ceramique et son procede de production
DE102005055526A1 (de) * 2005-11-22 2007-06-06 BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co. KG Verfahren und System zum Erzeugen einer dentalen Prothese
DE102009051593B4 (de) 2009-11-02 2018-05-09 Xplus3 Gmbh Verfahren zur Herstellung eines Werkstoffverbundes zwischen einer Oxidkeramik und einem auf diese aufzubringenden Verblendwerkstoff, Verwendung des Werkstoffverbundes sowie Kit für den Haftvermittler

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10234994A1 (de) * 2002-07-31 2004-02-12 Gerhard Bruckner Zahnverblendung und Vorrichtung zur Aufbringung einer Zahnverblendung

Also Published As

Publication number Publication date
DE102016109447A1 (de) 2017-12-07
WO2017202867A1 (fr) 2017-11-30
US20190209275A1 (en) 2019-07-11

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