EP1601304A1 - Procede de fabrication d'un implant dentaire en materiaux metalliques et ebauche correspondante - Google Patents

Procede de fabrication d'un implant dentaire en materiaux metalliques et ebauche correspondante

Info

Publication number
EP1601304A1
EP1601304A1 EP04717554A EP04717554A EP1601304A1 EP 1601304 A1 EP1601304 A1 EP 1601304A1 EP 04717554 A EP04717554 A EP 04717554A EP 04717554 A EP04717554 A EP 04717554A EP 1601304 A1 EP1601304 A1 EP 1601304A1
Authority
EP
European Patent Office
Prior art keywords
blank
binder
metal
dental
powder mixture
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.)
Ceased
Application number
EP04717554A
Other languages
German (de)
English (en)
Inventor
Günter SALIGER
Joachim Pfeiffer
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.)
Sirona Dental Systems GmbH
Original Assignee
Sirona Dental Systems 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 Sirona Dental Systems GmbH filed Critical Sirona Dental Systems GmbH
Publication of EP1601304A1 publication Critical patent/EP1601304A1/fr
Ceased 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
    • A61C13/00—Dental prostheses; Making same
    • A61C13/08—Artificial teeth; Making same
    • A61C13/083—Porcelain or ceramic teeth
    • A61C13/0835—Ceramic coating on metallic body
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49567—Dental appliance making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49567—Dental appliance making
    • Y10T29/49568—Orthodontic device making

Definitions

  • the invention relates to a method for producing a dental prosthetic item from metallic materials, as well as a blank and a green body and a binder for producing the dental prosthetic item from metal.
  • a large number of metallic alloys are used in dental technology for the manufacture of crowns and bridges. Caps and frameworks or complete restorations are made from these metals using casting processes using the lost shape method. These are then either used directly or, if necessary, veneered with ceramic or plastic.
  • EP 0 214 341 discloses a method for producing a metallic denture, in which a mixture of metal powders with a mixing liquid is prepared to a spreadable mass and is sintered. The metal powder mixture is modeled on a model serving as a firing support and is sintered on the model. Essentially the same technique is described in EP 0 373 380 A2.
  • DE 199 30 564 AI it is known from DE 199 30 564 AI to emboss a ceramic blank from a powdered ceramic raw material, to give this ceramic blank an ablation and / or outside contour by machining by machining and to give the machining ceramic green sheet a high strength Sintered ceramic molding.
  • the ceramic material is selected so that a pressing aid is used which approximately compensates for the expected sintering shrinkage during sintering.
  • DE 199 38 144 AI discloses a method for producing dentures from a presintered blank in a processing machine, in which the blank has a raw breaking strength of 15 to 30 MPa.
  • This blank is processed by milling, grinding or eroding.
  • the green body can be converted into a shrinkage-adapted, enlarged model of the final denture using suitable work measures. This can in particular Sirona Dental Systems GmbH
  • EP 0 630 622 A2 discloses the fundamental problem of processing high-strength ceramic or metallic dental prostheses, a ceramic dental prosthesis in particular being disclosed.
  • ceramic sintered materials have the disadvantage that with a shrinkage of 25%, a comparatively large volume has to be processed by the processing machine.
  • the object of the invention is to provide a tooth replacement part made of metallic materials and to propose a method which changes the material properties of the material in such a way that it can be processed in a machine designed for processing dental ceramics.
  • the invention is based on the knowledge that the grinding of a preliminary stage and the subsequent aftertreatment, eg. B. by sintering with shrinkage, even with a metallic denture leads to the goal.
  • the method for producing dental prosthetic items from metallic materials consists in that a molded from a metal-containing powder mixture Sirona Dental Systems GmbH
  • the invention is based on the fact that it is not the metallic material with its final material properties that is itself processed, but a preliminary stage thereof.
  • This preliminary stage of the material is strengthened by binders that are later removed and / or by pressure or temperature compaction, so that a sufficiently solid blank is provided.
  • the properties of the preliminary stage are set in such a way that the workpieces are precisely shaped and easy to handle, referred to here as blanks.
  • the procedure according to the invention breaks with the notions customary for the production of dentures from metallic materials, according to which either the casting or the machining in an NC machine are used to produce a complex individual shape from metal.
  • the dimensions of the dental prosthesis part which has been designed to the final dimension, are adjusted, taking into account the shape changes to be expected of the metallic material, and an intermediate body is thus constructed.
  • the changes in shape resulting from post-treatment of the machined blank are subject to physical laws, which can be described by modeling, or they result from aspects of the technology used for post-treatment. With the help of a computer program it is possible to Sirona Dental Systems GmbH
  • the aftertreatment can include pressure and / or heat treatment.
  • a sintering process at high temperatures is particularly suitable.
  • a binder contained in the metal-containing powder mixture of the blank is at least partially removed.
  • the metal-containing powder mixture can be a single- or multi-modal mixture of metal powders, optionally with the addition of a binder. Alloys or metals, such as AuPt, AuPdAg, PdAg, AuPd, NiCr, CoCr, Pd and Ti, which are known in the art as suitable in the prior art, are particularly suitable as materials.
  • the blank is machined to produce the Intermediate body by grinding or milling in a grinding and / or milling machine suitable for processing dental ceramics.
  • Another object of the invention is a blank for the production of dental prosthetic items from metallic materials.
  • the blank consists of a metal-containing powder mixture.
  • the metal-containing powder mixture comprises metal powder of one or more particle sizes and / or shapes, the blank preferably having a strength greater than 40 MPa (40-10 6 N / m 2 ).
  • the strength is advantageously significantly lower than the final strength of the finished denture part.
  • the metal-containing powder mixture is advantageously compacted in the blank, so that the blank is sufficiently strong to withstand the forces during processing
  • the powder mixture forming the blank can consist of a mixture containing various metals and the composition of the mixture in the blank can be location-dependent.
  • the edge areas of the blank can be designed such that a lower final strength is achieved than in the central areas of the blank. This can be advantageous if different tasks have to be performed at the same time, such as resistance to chewing pressure and favorable abrasion behavior, strength and a tight bond with the dentin.
  • the blank consists of a metal-containing powder mixture with a binder, the proportion of which is dimensioned such that the powder mixture can be shaped with a binder.
  • the binder can be in the form of powder.
  • the proportion of binder present in the blank is advantageously greater than 20% by volume and is at most 50% by volume.
  • the blank is formed from a compacted metal-containing powder mixture and Sirona Dental Systems GmbH
  • the binder is present in a proportion of less than 20% by volume, preferably less than 0.5% by volume.
  • the proportion of the binder may have been reduced by partially detaching it from an originally higher proportion.
  • the compacting may also make it possible to completely dispense with an additional binder.
  • the blank can contain surface elements on which a fit to other bodies can be produced. These surface elements do not have to be machined to produce an intermediate body.
  • Another object of the invention is an intermediate body for producing a tooth replacement part, which is produced by machining a blank described above.
  • the intermediate body differs from the dental prosthetic item to be produced by the amount of the dimensional change to be expected in the thermal finishing and advantageously has a strength (0.2% yield strength) higher than 40 MPa (40-10 6 N / m 2 ).
  • the strength is advantageously significantly lower than the final strength of the finished dental prosthetic item.
  • Yet another object of the invention is a tooth replacement part made of metal, which has sintered metal particles and whose strength (0.2% proof stress) is higher than 100 MPa (100 -10 6 N / m 2 ).
  • the denture part advantageously has a residual binder content of less than 0.1%, preferably it no longer contains any binder.
  • Both the blank and the denture part or the intermediate part can have a material as a binder that evaporates when heated to temperatures above 100 ° C.
  • Yet another object of the invention is a binder for a blank, tooth replacement part or an intermediate part made of metal, which is made of at least 90% organic materials, for example wax or synthetic resin, with a volatilization point at a temperature above 100 ° C. and below 600 ° C. having.
  • Yet another object of the invention is a method for producing a blank containing metallic materials.
  • a metal-containing powder mixture is formed into a blank and solidified.
  • the powder mixture of metal and binder can be compressed by means of pressure and / or heat treatment.
  • a binder can be added to the metal-containing powder mixture before the blank is created, in order to enable the blank to be shaped by injection molding, extrusion or extrusion.
  • the binder is advantageously removed before the blank is processed.
  • the blanks can be compacted by means of pressure and / or temperature even during or after the removal of the binder.
  • the proportion of the binder in the total mixture is advantageously between 20 and 50 percent by volume (vol%).
  • the location-dependent composition of the batch is preferably produced into a blank from a gradient material by layer pressing, sedimentation or spraying.
  • the location-dependent composition of the batch in the blank can also only be obtained through further process steps, such as chemical bonding or the diffusion of additives.
  • Another object of the invention is a metal-containing powder mixture for the production of a blank for the production of dental prosthetic items.
  • Metallic materials with a proportion of at least 50% by volume are provided in the powder mixture.
  • Fig. 2 shows a blank
  • Fig. 3 shows an intermediate body
  • Fig. 4 is a tooth replacement part.
  • a blank which consists of metal powders of single or multi-modal particle sizes and / or shapes. These powders are e.g. B. produced by atomization or chemical deposition. One-modal particle sizes are understood to mean the particles of a size distribution, whereas multimodal particle sizes have particles of different size distributions.
  • the blank can be produced from these powders by pressure or temperature compacting. When the powders are mixed with binder, they can be converted into blanks by injection molding, extrusion, extrusion or other molding processes. Then the binary Sirona Dental Systems GmbH
  • the creation of a dental prosthesis is based on the patient's actual situation.
  • the area to be supplied is scanned in its topographical shape after the preparation has been made. This can be done, for example, directly in the patient's mouth using a measurement camera, or it can be done indirectly with the help of a positive or negative impression of this area.
  • the workpieces are then modeled using known methods. This is usually done via Sirona Dental Systems GmbH
  • any binder that is still present is driven out and the intermediate part is brought to the desired final properties of the dental prosthetic item by post-treatment (e.g. by sintering).
  • post-treatment e.g. by sintering
  • the manner in which the shape changes is already taken into account on the basis of the model, so that the tooth replacement part reaches the desired final shape precisely.
  • the blank 1 shown in FIG. 2 is fastened on a holder 2, which is used for receiving in the chuck of a grinding or milling machine suitable for processing dental ceramics.
  • the outer dimensions of the blank 1 are dimensioned such that an intermediate part 3 to be produced from the blank lies completely within the blank.
  • the blank has such strength Sirona Dental Systems GmbH
  • the blank 1 contains a preformed surface element 4, on which a fit to other bodies can be produced.
  • This surface element 4 does not have to be machined, but corresponds to the end geometry.
  • a mating surface 5 is indicated in the intermediate body 3, which must be produced completely by machining.
  • FIG. 3 shows the intermediate part worked out from the blank 1 from FIG. 2.
  • the surface element 4 and the recess 5 can be seen here.
  • This intermediate body 3 has an oversize compared to the final dimensions, which corresponds to the shrinkage parameters of a change in dimension to be expected in the aftertreatment. This also applies to the prefabricated surface element 4.
  • FIG. 4 shows a dental prosthetic item 6 which has been produced from the intermediate body 3 from FIG. 3 and has the final material properties.
  • the dental prosthetic item 6 also has the final geometric dimensions, which have resulted from the intermediate body, for example, during a thermal aftertreatment by shrinking.

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 Preparations (AREA)
  • Powder Metallurgy (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un implant dentaire en matériaux métalliques, une ébauche, un corps intermédiaire et un liant destinés à la fabrication dudit implant. Ledit procédé consiste à se munir d'une ébauche constituée d'un mélange pulvérulent métallifère et solidifiée, à façonner l'ébauche de manière à obtenir un corps intermédiaire, et à mettre en oeuvre un traitement ultérieur du corps intermédiaire afin d'obtenir les propriétés souhaitées du matériau de l'implant dentaire.
EP04717554A 2003-03-05 2004-03-05 Procede de fabrication d'un implant dentaire en materiaux metalliques et ebauche correspondante Ceased EP1601304A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10309795 2003-03-05
DE10309795A DE10309795A1 (de) 2003-03-05 2003-03-05 Verfahren zur Herstellung eines Zahnersatzteils aus metallischen Werkstoffen und Rohling hierzu
PCT/DE2004/000449 WO2004078059A1 (fr) 2003-03-05 2004-03-05 Procede de fabrication d'un implant dentaire en materiaux metalliques et ebauche correspondante

Publications (1)

Publication Number Publication Date
EP1601304A1 true EP1601304A1 (fr) 2005-12-07

Family

ID=32891909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04717554A Ceased EP1601304A1 (fr) 2003-03-05 2004-03-05 Procede de fabrication d'un implant dentaire en materiaux metalliques et ebauche correspondante

Country Status (5)

Country Link
US (1) US20060168815A1 (fr)
EP (1) EP1601304A1 (fr)
JP (1) JP2006520221A (fr)
DE (1) DE10309795A1 (fr)
WO (1) WO2004078059A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004020369A1 (de) * 2004-04-23 2005-11-17 Sirona Dental Systems Gmbh Verfahren zur Herstellung eines dentalen Passkörpers
EP1833408A2 (fr) * 2004-12-21 2007-09-19 Johan Feith Implant dentaire
US20060163774A1 (en) * 2005-01-25 2006-07-27 Norbert Abels Methods for shaping green bodies and articles made by such methods
US20060166159A1 (en) 2005-01-25 2006-07-27 Norbert Abels Laser shaping of green metal body used in manufacturing an orthodontic bracket
DE102006021640B3 (de) * 2006-05-08 2007-10-11 Sirona Dental Systems Gmbh Verfahren, Rohling, Rohlingssortiment, Zahndatenbank und Rohlingsdatenbank mit vorgefertigter Teilendfläche zur Herstellung von Zahnersatzteilen
CA2671348A1 (fr) * 2006-12-22 2008-07-03 Thommen Medical Ag Implant dentaire et procede de fabrication de celui-ci
EP2014254B1 (fr) * 2007-06-07 2018-10-31 Nobel Biocare Services AG Procédé et produit fritté pour former un bridge
ATE507796T1 (de) 2007-06-07 2011-05-15 Nobel Biocare Services Ag Verfahren zur herstellung eines dentalen produkts
EP2072020A1 (fr) * 2007-12-17 2009-06-24 Nobel Biocare Services AG Procédé de fabrication d'un produit céramique dentaire
DE102009019781A1 (de) 2009-05-02 2010-11-04 White Peaks Dental Systems Gmbh & Co. Kg Verfahren zur Herstellung von künstlichem Zahnersatz
DE102009039102B4 (de) * 2009-08-27 2022-01-27 Wdt-Wolz-Dental-Technik Gmbh Verfahren zur Herstellung von Zahnteilen aus Dentalmetallpulver
DE102009039604A1 (de) * 2009-09-01 2011-03-10 Henri Dr.-Ing. Cohrt Verfahren zur Herstellung eines gasdichten Körpers und zur mechanischen Bearbeitung zu einem Zahnersatz vorgesehener Grundkörper
DE102013003434A1 (de) 2013-02-27 2014-08-28 Gernot Hausch CoCr - Fräsrohling für die Herstellung dentaler Prothesenteile
ITMI20131561A1 (it) * 2013-09-23 2015-03-24 Dental Knowledge S R L Metodo di realizzazione di una protesi dentale
DE102014209085B4 (de) * 2014-05-14 2017-03-23 Precis Glashütte GmbH Herstellung eines Formkörpers aus einer Dentallegierung
DE102017118528A1 (de) 2017-08-14 2019-02-14 BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co. KG Verfahren zur Herstellung eines Rohlings für die Herstellung dentaler Bauteile mittels subtraktiver CAD/CAM-Verfahren

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852045A (en) * 1972-08-14 1974-12-03 Battelle Memorial Institute Void metal composite material and method
CA1119847A (fr) * 1977-09-26 1982-03-16 Minnesota Mining And Manufacturing Company Articles moules infiltres faits de poudres de metal spheroides non refractaires
DE3841902C1 (fr) * 1988-12-13 1989-11-02 Degussa Ag, 6000 Frankfurt, De
AU680653B2 (en) * 1993-05-03 1997-08-07 Itzhak Shoher Moldable dental composition
US5702650A (en) * 1993-06-24 1997-12-30 Hintersehr; Josef Process for producing dental prostheses
US6652765B1 (en) * 1994-11-30 2003-11-25 Implant Innovations, Inc. Implant surface preparation
WO2000062705A1 (fr) * 1999-04-16 2000-10-26 Kaltenbach & Voigt Gmbh & Co. Procede de production d'elements ceramique medicaux, medico-dentaires, prothetiques dentaires et techniques
DE19938144C2 (de) * 1999-08-16 2003-08-28 3M Espe Ag Verfahren zur Herstellung von Zahnersatz
DE10107451B4 (de) * 2001-02-14 2004-04-15 3M Espe Ag Verfahren zur Herstellung von Zahnersatz, nach dem Verfahren herstellbares Zahnersatzteil sowie vorgesinterter Rohling
US6739595B1 (en) * 2002-07-01 2004-05-25 Dana Corporation Self-energizing combustion seal flange

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004078059A1 *

Also Published As

Publication number Publication date
DE10309795A1 (de) 2004-09-23
JP2006520221A (ja) 2006-09-07
WO2004078059A1 (fr) 2004-09-16
US20060168815A1 (en) 2006-08-03

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