WO2003011231A1 - Alliage dentaire au cobalt - Google Patents

Alliage dentaire au cobalt Download PDF

Info

Publication number
WO2003011231A1
WO2003011231A1 PCT/EP2002/008246 EP0208246W WO03011231A1 WO 2003011231 A1 WO2003011231 A1 WO 2003011231A1 EP 0208246 W EP0208246 W EP 0208246W WO 03011231 A1 WO03011231 A1 WO 03011231A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
proportion
dental alloy
alloy according
dental
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
PCT/EP2002/008246
Other languages
German (de)
English (en)
Inventor
Katja Spohn
Gerolf Bossert
Rudolf Wagner
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.)
Wieland Dental and Technik GmbH and Co KG
Original Assignee
Wieland Dental and Technik 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 Wieland Dental and Technik GmbH and Co KG filed Critical Wieland Dental and Technik GmbH and Co KG
Publication of WO2003011231A1 publication Critical patent/WO2003011231A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/07—Alloys based on nickel or cobalt based on cobalt
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/84—Preparations for artificial teeth, for filling teeth or for capping teeth comprising metals or alloys
    • A61K6/844—Noble metals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins

Definitions

  • the invention relates to a cobalt dental alloy with at least one precious metal, its use and a dental prosthetic part made therefrom.
  • precious metals and their alloys are very popular in dental technology. In times of high precious metal prices, however, these are quite expensive, so that cheaper non-precious metal alloys, preferably based on cobalt-chromium, which contain no or only small amounts of precious metal, are often used in this area.
  • the non-precious metal alloys have some disadvantages compared to precious metal alloys, including a. as far as the processability of the alloys is concerned.
  • High hardness, poor castability, a lack of ceramic composite combined with a tendency to discolor ceramics when fired, and a lack of corrosion resistance are the most frequently complained disadvantages of cobalt-chromium alloys currently on the market.
  • DE-A1-30 09 650 discloses cobalt-chromium alloys with a palladium content of 1-70% by weight. With palladium contents> 5% by weight, however, it has been shown that the corrosion resistance decreases sharply as the proportion of accompanying metals such as gallium, indium, tin and manganese increases. Et al Therefore, cobalt-chromium alloys that contain only palladium as the noble metal have not found any particular application in the dental field.
  • the proportion of a single noble metal in the alloys according to the invention is not higher than 25% by weight, preferably not higher than 20% by weight.
  • the cobalt dental alloys according to the invention preferably contain platinum, rhodium, ruthenium or iridium or mixtures of two or more of the noble metals platinum, ruthenium, rhodium, iridium and palladium. In the case of mixtures, it is preferred if the proportion of platinum is greater than the proportion of the other noble metals.
  • the noble metals palladium, platinum, rhodium and ruthenium are contained, wherein the proportion of platinum is preferably higher than the proportion of each of the other noble metals, in particular approximately as high as the total proportion of the other noble metals combined.
  • the noble metals platinum, ruthenium, rhodium and iridium are contained, the proportion of platinum preferably being higher than the proportion of each of the other noble metals, in particular approximately as high as the total share of the other precious metals combined.
  • the proportion of noble metal in the cobalt dental alloys according to the invention is advantageously 20-30% by weight, in particular approximately 25% by weight. With regard to the properties of the dental alloys according to the invention, it has proven particularly advantageous if platinum and ruthenium are present as noble metals, and preferably essentially only these. In a particularly preferred embodiment of the dental alloy according to the invention, the proportion of platinum is between 12 and 18% by weight, preferably approximately 15% by weight, and the proportion of ruthenium is between 7 and 13% by weight, preferably approximately 10% by weight .-%.
  • the alloys according to the invention preferably contain chromium as a constituent, the proportion of this metal being 1-35% by weight, preferably 15-25% by weight, in particular 17-20% by weight. Chromium lowers the CTE and improves corrosion resistance and melting behavior. It also reduces the tendency of the dental alloy to oxidize.
  • the cobalt proportions of the cobalt dental alloy according to the invention are preferably between 40 and 70% by weight, preferably between 45 and 55% by weight, in particular between 50 and 53% by weight.
  • the dental alloys according to the invention can contain, in addition to the alloy constituents previously mentioned, further metals and / or non-metals as accompanying substances, which are described below.
  • cobalt dental alloys according to the invention can contain gold, in particular in a proportion of 0.1 to 10% by weight. The share of gold is added to the precious metal share.
  • silver and copper are also present in addition to gold, the total proportion of these metals not exceeding 10% by weight.
  • the metals gold, silver and copper mentioned improve the machinability and the flowability of the dental alloy. Proportions of more than 10% by weight of these three metals reduce the corrosion resistance. In addition, if the concentrations of these metals are too high, dark oxides are formed during the glow, which leads to a deterioration in the aesthetics.
  • Tungsten and / or molybdenum can be contained in the cobalt dental alloy as further accompanying metals.
  • a content of these metals of 0 to 15% by weight, in particular 0.5 to 10% by weight, is preferred.
  • the metals mentioned improve the corrosion resistance, reduce the tendency to oxidize and lower the CTE. If the preferred proportions by mass of these two metals are exceeded, the machinability of the resulting dental alloys suffers, since in particular the hardness increases significantly.
  • gallium with a proportion of at most 4% by weight, in particular 0.1-4% by weight, and / or germanium with a proportion of at most 3% by weight, in particular 0.1-3% by weight can be used as accompanying metals.
  • %, and / or indium with a proportion of at most 4% by weight, in particular 0.1-4% by weight, and / or tin with a proportion of at most 4% by weight, in particular 0.1-4 % By weight, and / or aluminum with a proportion of at most 3% by weight, in particular 0.1-3 % By weight may be present, the total proportion of these metals not exceeding 12% by weight.
  • the total proportion of these metals is in particular in the range from 0.1 to 12% by weight.
  • the melting interval is reduced by these metals, whereby the flowability is increased.
  • these metals cause the cast porosity to decrease and the bedding behavior to be improved.
  • the influence of these metals on hardness is rather small. If the maximum weight percentages of the individual metals are exceeded, the corrosion resistance will be negatively influenced. In addition, the oxide skin that forms when it melts together with oxygen becomes stronger.
  • the metals gold, gallium and indium should not be present in the alloy at the same time, since otherwise the individual alloy components may separate during melting. Local elements can form here, which leads to a strong reduction in corrosion resistance. The same applies to a combination of gallium and manganese.
  • Deoxidants act. Will the specified maximum values proportions of the individual metals exceeded, this can lead to excessive hardness of the resulting alloy. Corrosion resistance can also suffer.
  • the cobalt dental alloy according to the invention advantageously contains iron in a proportion of at most 15% by weight, in particular 0.1-15% by weight. This reduces the CTE as well as the hardness of the alloy. However, iron values that are too high lead to an increased tendency to corrosion.
  • titanium with a proportion of at most 3% by weight preferably 0.1-3% by weight, in particular 1% by weight, and / or yttrium with a proportion of at most 2% by weight, preferably 0.1-2% by weight, in particular approximately 0.2% by weight, and / or zirconium with a proportion of at most 2% by weight, preferably 0, 1 - 2% by weight, in particular 0.5% by weight, and / or lanthanum with a proportion of at most 1% by weight, in particular 0.1 - 1% by weight, and / or ytterbium with a
  • the metals mentioned cause residual N and C components to bond, which leads to a reduction in the brittleness and an increase in the corrosion resistance of the dental alloy.
  • Excessive proportions of the metals mentioned (> 5% by weight) cause an increase in the melting interval and embrittlement of the alloy.
  • non-metals can also be incorporated into the dental alloys according to the invention.
  • carbon and / or nitrogen may be present as accompanying elements with a proportion of at most 0.5% by weight, in particular 0.1-0.5% by weight, the total proportion of these two elements being 0.8% by weight. -% should not exceed and is in particular in the range of 0.1-0.5% by weight.
  • the two elements mentioned lead to an increase in the stiffness (spring hardness) of the alloy.
  • Excessively high proportions (proportions> 5% by weight) cause a strong increase in corrosion due to carbide / nitrite deposits.
  • a particularly preferred embodiment of a cobalt dental alloy according to the invention has the following composition: cobalt (51% by weight), chromium (19% by weight), platinum (15% by weight), ruthenium (10% by weight), Manganese (2% by weight), silicon (1% by weight) and molybdenum (2% by weight).
  • cobalt dental alloy has the following composition: cobalt (50.55% by weight), chromium (18.5% by weight), platinum (15% by weight), ruthenium (10% by weight) %), Manganese (1% by weight), silicon (0.75% by weight), molybdenum (3% by weight), tungsten (0.5% by weight), niobium (0.5 % By weight) and yttrium (0.2% by weight).
  • the production of fixed dentures preferably by firing with ceramic materials, is possible.
  • the dental alloys mentioned are suitable for the production of removable dentures.
  • the invention also claims a dental prosthetic part, which is characterized in that it is based on the dental alloy can be produced according to one of claims 1 to 21.
  • This dental prosthetic part can be veneered with ceramic as well as with plastic, or also not veneered.
  • Table 1 shows the composition of cobalt dental alloys according to the invention. These alloys are melted in a known manner after the components have been mixed together. They are then available as so-called casting alloys. The table also shows values for hardness, coefficient of thermal expansion, ceramic veneering and corrosion resistance.
  • the hardness is given in HV 5/30.
  • the coefficients of thermal expansion are given in 10 "6 x K " 1 , the first value corresponding to the value measured at 25-500 ° C and the second value corresponding to the value measured at 25-600 ° C.
  • the ceramic veneering ability (metal-ceramic adhesive bond according to ISO 9693) is divided into four levels of differently strong adhesive bond (very good, good, satisfactory, limited). Very good corresponds to> 45 MPa, good corresponds to 35 - 45 MPa, satisfactory corresponds to 25 - 35 MPa and conditionally corresponds to ⁇ 25 MPa.
  • the corrosion resistance, determined by immersion test according to EN ISO 10271, is divided into three levels (very good, good, satisfactory). Very well corresponds to an ion release of ⁇ 10 ⁇ g / cm 2 per week, well corresponds to 10 - 100 ⁇ g / cm 2 per week, and satisfactorily corresponds to 100 - 1,000 ⁇ g / cm 2 per week.
  • Table 1 shows the fundamentally advantageous properties of all tested dental alloys according to the invention. Particularly noteworthy are the alloys with the numbers 8, 9 and 25-35, especially those with the numbers 8 and 31.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Plastic & Reconstructive Surgery (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Dental Preparations (AREA)

Abstract

L'invention concerne un alliage dentaire au cobalt comprenant au moins un métal noble, la part de métal noble étant au moins comprise entre 15 et 35 % en poids, sous réserve qu'il ne contienne pas uniquement du palladium. Cet alliage dentaire s'utilise pour produire des prothèse dentaires fixes, par déflagration avec des matières céramiques, ainsi que pour produire des prothèses dentaires amovibles. L'invention concerne en outre un élément de dentisterie conservatrice, caractérisé en ce qu'il peut être obtenu sur la base de l'alliage dentaire selon l'invention.
PCT/EP2002/008246 2001-07-24 2002-07-24 Alliage dentaire au cobalt Ceased WO2003011231A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10136997.2 2001-07-24
DE10136997A DE10136997A1 (de) 2001-07-24 2001-07-24 Kobalt-Dentallegierung

Publications (1)

Publication Number Publication Date
WO2003011231A1 true WO2003011231A1 (fr) 2003-02-13

Family

ID=7693529

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/008246 Ceased WO2003011231A1 (fr) 2001-07-24 2002-07-24 Alliage dentaire au cobalt

Country Status (2)

Country Link
DE (1) DE10136997A1 (fr)
WO (1) WO2003011231A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2421513A (en) * 2004-12-27 2006-06-28 Argen Corp Dental alloys containing chromium and ruthenium
CN102876928A (zh) * 2011-07-12 2013-01-16 义获嘉·伟瓦登特公司 钯钴基合金
DE102012223239A1 (de) * 2012-12-14 2014-06-18 BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co. KG Edelmetall-Dentallegierung für den SLM-Prozess
US11427894B2 (en) * 2019-08-02 2022-08-30 The Argen Corporation Cobalt based platinum-containing noble dental alloys
US20240050206A1 (en) * 2022-08-11 2024-02-15 Ivoclar Vivadent Ag Cobalt-platinum based dental alloy materials

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007013638A1 (de) 2007-03-19 2008-09-25 Degudent Gmbh Verfahren zum Polieren von metallischen Zahnrekonstruktionen
GB2460378B (en) 2007-03-21 2012-03-21 Argen Corp Non-magnetic cobalt-palladium dental product

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE684186C (de) * 1937-05-13 1939-11-23 Degussa Verwendung von Palladiumlegierungen fuer Dentalzwecke
US4061495A (en) * 1974-07-08 1977-12-06 Johnson, Matthey & Co., Limited Platinum group metal-containing alloy
JPS5547357A (en) * 1978-09-28 1980-04-03 Hitachi Metals Ltd Magnetic alloy for dental surgery
JPS5547358A (en) * 1978-09-28 1980-04-03 Hitachi Metals Ltd Magnetic alloy for dental surgery
DE3009650A1 (de) * 1980-03-13 1981-09-17 Degussa Ag, 6000 Frankfurt Goldfreie legierungen zum aufbrennen keramischer massen
EP0225668A1 (fr) * 1985-11-27 1987-06-16 Elephant Edelmetaal B.V. Alliages palladium-cobalt; fabrication d'un recouvrage de racine dentaire

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1104195B (de) * 1958-09-12 1961-04-06 Degussa Verformbare, korrosionsbestaendige Kobalt-Chrom-Legierungen
DE3624377A1 (de) * 1986-07-18 1988-01-28 Vacuumschmelze Gmbh Verwendung einer korrosionsbestaendigen, nickelfreien kobalt-chrom-legierung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE684186C (de) * 1937-05-13 1939-11-23 Degussa Verwendung von Palladiumlegierungen fuer Dentalzwecke
US4061495A (en) * 1974-07-08 1977-12-06 Johnson, Matthey & Co., Limited Platinum group metal-containing alloy
JPS5547357A (en) * 1978-09-28 1980-04-03 Hitachi Metals Ltd Magnetic alloy for dental surgery
JPS5547358A (en) * 1978-09-28 1980-04-03 Hitachi Metals Ltd Magnetic alloy for dental surgery
DE3009650A1 (de) * 1980-03-13 1981-09-17 Degussa Ag, 6000 Frankfurt Goldfreie legierungen zum aufbrennen keramischer massen
EP0225668A1 (fr) * 1985-11-27 1987-06-16 Elephant Edelmetaal B.V. Alliages palladium-cobalt; fabrication d'un recouvrage de racine dentaire

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 198020, Derwent World Patents Index; Class D22, AN 1980-35601C, XP002221777 *
DATABASE WPI Section Ch Week 198020, Derwent World Patents Index; Class D22, AN 1980-35602C, XP002221776 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2421513A (en) * 2004-12-27 2006-06-28 Argen Corp Dental alloys containing chromium and ruthenium
GB2421513B (en) * 2004-12-27 2007-04-04 Argen Corp Noble dental alloy
US7794652B2 (en) 2004-12-27 2010-09-14 The Argen Corporation Noble dental alloy
CN102876928A (zh) * 2011-07-12 2013-01-16 义获嘉·伟瓦登特公司 钯钴基合金
DE102012223239A1 (de) * 2012-12-14 2014-06-18 BEGO Bremer Goldschlägerei Wilh. Herbst GmbH & Co. KG Edelmetall-Dentallegierung für den SLM-Prozess
US11427894B2 (en) * 2019-08-02 2022-08-30 The Argen Corporation Cobalt based platinum-containing noble dental alloys
US20240050206A1 (en) * 2022-08-11 2024-02-15 Ivoclar Vivadent Ag Cobalt-platinum based dental alloy materials

Also Published As

Publication number Publication date
DE10136997A1 (de) 2003-02-13

Similar Documents

Publication Publication Date Title
DE3314657C2 (de) Borhaltige Dentallegierung und ihre Verwendung in einem Dentalverblendkörper
DE69734515T2 (de) Gesinterte hartlegierung
DE4031169C1 (fr)
EP0036556B1 (fr) Alliages ne contenant pas d'or, pour l'application de masses céramiques par cuisson
DE3319457C1 (de) Kobaltlegierungen zur Herstellung von Zahnersatz
DE10297310T5 (de) Silberhaltige Dentallegierung
DE2830010A1 (de) Metall-keramik-werkstoff auf der basis von titancarbid
EP0530697B1 (fr) Utilisation d'un alliage de palladium pour fusion sur une céramique dentaire
EP1696044A1 (fr) Alliage pour la fabrication de prothèse dentaire céramique
EP0973480B1 (fr) Alliages argent-palladium utilises pour produire une prothese dentaire pouvant etre revetue de ceramique dentaire
DE3406711C1 (de) Goldarme Dental-Legierungen
DE3522523C1 (de) Verwendung von silberfreien Palladiumlegierungen zum Aufbrennen von Dentalkeramiken
DE3209977C2 (de) Dentalfuellmaterial
WO2003011231A1 (fr) Alliage dentaire au cobalt
DE2631906A1 (de) Metallpulvermischung fuer die herstellung von in der zahnheilkunde verwendbaren zahnamalgamen durch mischen mit quecksilber
DE4143230A1 (de) Zahnersatz auf titan-basis und verfahren zu seiner herstellung
EP1558775B1 (fr) Alliage pour piece dentaire coulee
DE3211703A1 (de) Verwendung goldarmer edelmetallegierungen fuer dentalzwecke
DE3316595C2 (de) Dental-Legierung auf der Basis von Palladium zur Herstellung von festsitzendem und herausnehmbarem Zahnersatz
EP0178506B1 (fr) Alliages argent-palladium comme matière pour application de céramiques dentaires par cuisson
EP0691123B2 (fr) Alliage dentaire à haute teneur en or
EP2818567B1 (fr) Alliage en or blanc, notamment pour l'utilisation dans le cadre d'un procédé de béton coulé
DE10226221C1 (de) Dentalguss-Legierung
DE3132143C2 (de) Edelmetallegierung zur Herstellung von mit keramischen Massen verblendbaren Kronen und Brücken
EP1799873B1 (fr) Alliage dentaire a teneur elevee en or et exempt de palladium et de cuivre

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BY BZ CA CH CN CO CR CU CZ DE DM DZ EC EE ES FI GB GD GE GH HR HU ID IL IN IS JP KE KG KP KR LC LK LR LS LT LU LV MA MD MG MN MW MX MZ NO NZ OM PH PL PT RU SD SE SG SI SK SL TJ TM TN TR TZ UA UG US UZ VN YU ZA ZM

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ UG ZM ZW AM AZ BY KG KZ RU TJ TM AT BE BG CH CY CZ DK EE ES FI FR GB GR IE IT LU MC PT SE SK TR BF BJ CF CG CI GA GN GQ GW ML MR NE SN TD TG

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LU MC NL PT SE SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP