WO2009124869A1 - Procédé de fabrication de prothèses dentaires par électrophorèse - Google Patents

Procédé de fabrication de prothèses dentaires par électrophorèse Download PDF

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Publication number
WO2009124869A1
WO2009124869A1 PCT/EP2009/053882 EP2009053882W WO2009124869A1 WO 2009124869 A1 WO2009124869 A1 WO 2009124869A1 EP 2009053882 W EP2009053882 W EP 2009053882W WO 2009124869 A1 WO2009124869 A1 WO 2009124869A1
Authority
WO
WIPO (PCT)
Prior art keywords
working model
electrophoresis
prosthesis
base plate
dental prostheses
Prior art date
Application number
PCT/EP2009/053882
Other languages
German (de)
English (en)
Inventor
Stefan Wolz
Original Assignee
Wdt-Wolz-Dental-Technik Gmbh
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 Wdt-Wolz-Dental-Technik Gmbh filed Critical Wdt-Wolz-Dental-Technik Gmbh
Publication of WO2009124869A1 publication Critical patent/WO2009124869A1/fr

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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
    • A61C13/0006—Production methods
    • A61C13/001—Electrophoresis coating

Definitions

  • the invention relates to the production of dental prostheses by electrophoresis.
  • Teeth but also partial dentures, bridges and single crowns understood.
  • a plaster model is usually produced by means of an impression of the patient's jaw, which is articulated with the aid of a Gebißregistratur. Based on the plaster model, the prosthesis is then manufactured.
  • the various methods are known in the art and need not be explained in detail here.
  • a method is that for reasons of stability, a metal framework is cast, which is sheathed either with plastic or ceramic.
  • a recent development in the manufacture of dental prostheses is that the data of the jaw or a model are scanned and the prosthesis by means of CAD / CAM from a hipped (hot isostatically pressed) ceramic block, preferably made of zirconia, is milled out.
  • CAD / CAM CAD / CAM procedure
  • copy milling is possible. Apart from the fact that 80 to 90% waste of material takes place during milling, the milling is associated with considerable dust development, which requires a further technical effort in order not to endanger the health of the dental technician.
  • FIG. 2 shows the cross section according to FIG. 1 with a shrunk-on thermoforming foil
  • FIG 3 shows the cross section according to Figure 2 without the part forming the prosthesis.
  • a working model 1 is prepared in a conventional manner by gypsum base plate 2 of the working model 1 is formed, which reflects the structure of the jaw of the patient.
  • the patient was provided with four implants.
  • the structure of an implant is indicated by reference numeral 4.
  • the part 3 is constructed by means of model wax and confection teeth, which corresponds in its spatial shape of the prosthesis to be produced. This technique is known to those skilled in the art.
  • the working model shown in Fig. 1 is achieved. It shows a cross section in the molar range.
  • thermoforming sheet 5 is shrunk.
  • the thermoforming sheet 5 is removed together with the part 3 of the base plate 2.
  • the thermoforming sheet 5 is separated from part 3 and placed back on the base plate 2.
  • a cavity 6, which also corresponds in its spatial shape of the prosthesis to be produced.
  • thermoforming sheet 5 Before the base plate 2 is coated with a conventional release agent and a silver paint. It is also recommended to provide the inside of thermoforming sheet 5 with a silver paint, if not anyway a conductive layer on the thermoforming sheet is present. This conductive layer can also be achieved by wetting the film surface with the slurry slurry slurry. Furthermore, several small openings 7 were placed in the thermoforming sheet 5 in the region of the tooth tips, which facilitate the entry of the slip in the electrophoresis and the exit of the air.
  • the structure of Figure 3 is immersed in a conventional alumina slurry, wherein the power supply to the silver paint layer via a zinc strip, not shown, takes place. At a current of 80 mA, the space 6 fills with alumina within 8 minutes. The resulting green body is easy to lift off from the base plate 2 because of the release agent and easily separated from the thermoforming sheet by heating. After minor cleaning work, the alumina green body is sintered at 1150 ° C.
  • the resulting raw prosthesis is then processed by aesthetic considerations by applying paint, for example, by the gum area is colored reddish and the teeth is given a more natural look. Thereafter, the usual in Alumina glass infiltration. The result is a completely satisfactory full denture.
  • inventive method is not limited to the above example.
  • any other suitable ceramic material can be used, in particular zirconia. Metals are less suitable for larger jobs for weight reasons.
  • plastic can be electrophoretically deposited under certain conditions.
  • the working model may be a compatible prosthesis, modeled model or situation model besides a model with fixed teeth.
  • thermoforming sheet For the preparation of the cavity 6, it is not necessary necessarily a thermoforming sheet.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (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 la fabrication en particulier de prothèses dentaires entières ou de prothèses partielles. L'invention vise à cet égard à proposer un procédé qui peut être mis en oeuvre à une rapidité supérieure d'un ordre de grandeur, tout en économisant le matériau utilisé et en permettant un façonnage précis. Dans ce procédé, on applique avec rétreint une feuille thermoformée (5) sur un modèle de travail (1). La partie (3) du modèle de travail (1) qui correspond spatialement à la prothèse souhaitée est enlevée de la plaque de base (2) du modèle de travail (1) et la feuille thermoformée (5) façonnée est ensuite placée sur la plaque de base (2). On obtient ainsi un espace creux qui correspond spatialement à la prothèse souhaitée. Au lieu d'utilsier une feuille thermoformée, on peut utiliser d'autres matériaux moulables. Cet espace creux est rempli par électrophorèse, ce qui donne lieu à un corps cru qui, après frittage et le traitement habituel, produit la prothèse souhaitée. Le matériau approrié est en particulier l'alumine. Dans le dessin, la référence (4).se rapport à une structure d'implant.
PCT/EP2009/053882 2008-04-11 2009-04-01 Procédé de fabrication de prothèses dentaires par électrophorèse WO2009124869A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008018434.9 2008-04-11
DE102008018434A DE102008018434A1 (de) 2008-04-11 2008-04-11 Verfahren zur Herstellung dentaler Prothesen durch Elektrophorese

Publications (1)

Publication Number Publication Date
WO2009124869A1 true WO2009124869A1 (fr) 2009-10-15

Family

ID=40874703

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/053882 WO2009124869A1 (fr) 2008-04-11 2009-04-01 Procédé de fabrication de prothèses dentaires par électrophorèse

Country Status (2)

Country Link
DE (1) DE102008018434A1 (fr)
WO (1) WO2009124869A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017005905A1 (fr) * 2015-07-08 2017-01-12 Heraeus Kulzer Gmbh Dispositif et procédé pour la fixation de dents prothétiques

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4005570A1 (de) * 1990-02-22 1991-08-29 Schuetz Dental Gmbh Verfahren zur herstellung eines dentalen gegenstandes
WO2002076321A2 (fr) * 2001-03-26 2002-10-03 Wieland Dental + Technik Gmbh & Co. Kg Procede de production de pieces moulees dentaires en ceramique pleine a deux elements ou a elements multiples et dispositif approprie
JP2005325058A (ja) * 2004-05-14 2005-11-24 Tokuyama Corp セラミックス製の歯科用修復物の製造方法
JP2007244803A (ja) * 2006-03-20 2007-09-27 National Institute For Materials Science セラミックス製歯科用修復物及びその製造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19801532C2 (de) * 1998-01-16 2003-04-30 Stefan Wolz Verfahren und Vorrichtung zum Tiefziehen von Folien auf Einzelstümpfe in der Zahntechnik
DE10021437C2 (de) * 2000-05-03 2002-05-08 Stefan Wolz Verfahren zur Herstellung vollkeramischer Gerüste, insbesondere aus Alumina, in der Zahntechnik

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4005570A1 (de) * 1990-02-22 1991-08-29 Schuetz Dental Gmbh Verfahren zur herstellung eines dentalen gegenstandes
WO2002076321A2 (fr) * 2001-03-26 2002-10-03 Wieland Dental + Technik Gmbh & Co. Kg Procede de production de pieces moulees dentaires en ceramique pleine a deux elements ou a elements multiples et dispositif approprie
JP2005325058A (ja) * 2004-05-14 2005-11-24 Tokuyama Corp セラミックス製の歯科用修復物の製造方法
JP2007244803A (ja) * 2006-03-20 2007-09-27 National Institute For Materials Science セラミックス製歯科用修復物及びその製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017005905A1 (fr) * 2015-07-08 2017-01-12 Heraeus Kulzer Gmbh Dispositif et procédé pour la fixation de dents prothétiques

Also Published As

Publication number Publication date
DE102008018434A1 (de) 2009-11-12

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