EP0073228A1 - Alliage a base de cobalt et de nickel, en particulier pour la preparation de protheses dentaires - Google Patents

Alliage a base de cobalt et de nickel, en particulier pour la preparation de protheses dentaires

Info

Publication number
EP0073228A1
EP0073228A1 EP82900823A EP82900823A EP0073228A1 EP 0073228 A1 EP0073228 A1 EP 0073228A1 EP 82900823 A EP82900823 A EP 82900823A EP 82900823 A EP82900823 A EP 82900823A EP 0073228 A1 EP0073228 A1 EP 0073228A1
Authority
EP
European Patent Office
Prior art keywords
weight
alloy
cobalt
alloys
gallium
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Withdrawn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
EP82900823A
Other languages
German (de)
English (en)
Other versions
EP0073228A4 (fr
Inventor
József KOMAR KALMAR
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.)
Vasipari Kutato Intezet
Fogtechnikai Vallalat
Original Assignee
Vasipari Kutato Intezet
Fogtechnikai Vallalat
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
Priority claimed from HU8181526A external-priority patent/HU180626B/hu
Priority claimed from HU52781A external-priority patent/HU180627B/hu
Application filed by Vasipari Kutato Intezet, Fogtechnikai Vallalat filed Critical Vasipari Kutato Intezet
Publication of EP0073228A1 publication Critical patent/EP0073228A1/fr
Publication of EP0073228A4 publication Critical patent/EP0073228A4/fr
Withdrawn legal-status Critical Current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
    • 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
    • A61K6/842—Rare earth metals

Definitions

  • the invention relates to an alloy based on cobalt or nickel, in particular for the production of dental prostheses, which is resistant to corrosion and wear, chewable, polishable, colourfast and weldable.
  • Dental prostheses are known to be produced in two versions, namely as fixed dentures attached to existing teeth or as removable, loose dentures.
  • the dental technicians manufacture the crowns from prefabricated sleeves made of corrosion-resistant steel using the so-called "pulling" process.
  • the bridges are made by soldering together crowns attached to the supporting teeth in the above manner, with bridges cast according to separate modeling.
  • the number of dental prostheses manufactured according to the "one-piece casting process” shows an increasing trend on a global scale. In Budapest e.g. in 1979, compared to 1971, about a hundred times more dentures were manufactured using the "one-piece casting process". However, this corresponds to only about 37% of the total number of prostheses manufactured in 1979, because the applicability of the "one-piece casting process" is limited by the strict requirements for the alloys that can be used, as well as by their high price and difficulties in purchasing.
  • the alloy used should not only be sufficiently strong, wear-resistant and corrosion-resistant, but it should also have other properties, such as good castability, for precise adaptation, good cold deformability, polishability, color fastness and elasticity. It should also be a corresponding one ensure mechanical adhesion of the plastic covers required for aesthetic reasons.
  • the mostly cobalt-chromium alloys (e.g. Vitallium) used to manufacture bridges have the following properties:
  • the alloys used to manufacture removable dentures should meet similarly stringent requirements, their castability, ductility and elasticity are supposed to be even better.
  • the castability of an alloy suitable for this purpose is said to fully fill molds for 0.3-0.4 mo thick base plates with a relatively large surface area, as well as that of anchoring clips.
  • the cast plates and brackets should withstand the fatigue load that occurs during use, or they should allow play-free adjustment without damage and with the least permanent deformation.
  • the alloys suitable for this purpose should have a strength of min. 30 daN / mm 2 , an elongation of min. 5% and a hardness of 140-450 HV5 / 30.
  • the object of the invention is to create an alloy based on cobalt or nickel, in particular for use in dentistry, which has the most important technical characteristics for dental prostheses of the precious metal alloys used today, the production of fixed dentures and of base plates, brackets and clip systems for removable dentures allowed, does not contain any precious metal, so that their manufacturing costs are a fraction of the manufacturing costs of precious metal alloys and their components are easy to obtain.
  • This object is achieved according to the invention with an alloy based on cobalt or nickel, which, apart from the base metal, contains 10-50% by weight of chromium and 0.2-4.5% by weight of gallium as main components.
  • Such an alloy is resistant to corrosion and wear, can be deformed, polished, colourfast, and easy to cast.
  • Their strength values correspond to the demands placed on the application of the "one-piece casting process", but their weight is only half as high as the weight of the precious metal alloys, which represents a significant advantage in dental application.
  • gallium 0.2-1.0% by weight gallium
  • gallium 0.4-1.2% by weight gallium
  • the alloy in addition to the Sasismetal 13-18% by weight chromium, 0.4-1.0% by weight gallium, 0.05-0.08% by weight lanthanum, 0.03-0.06% by weight neodymium, 1, Contains 0-2.0% by weight of molybdenum.
  • gallium 0.2-1.0% by weight gallium
  • the alloy according to the invention has the following strength values:
  • the alloy according to the invention has an exceptionally good mold-filling ability and castability: one can cast 0.3-0.4 mm thick base plates and clamp systems from this alloy (which has a cross section of 0.07-0.09 mm and a length of 10-25 mm corresponds). For comparison, it should be noted at this point that the currently known cobalt-chromium alloys do not fill molds for plates and clamps less than 0.8-1.0 mm thick.
  • the corrosion resistance of the alloys according to the invention is very good. They are easy to polish and show an aesthetically corresponding lasting shine. They can be welded with their own material and soldered using silver alloys without causing a change in the joining of the alloy.
  • the noble oxide - especially galliura oxide - that forms on the metal frame of the denture after polishing ensures exceptionally good adhesion of the aesthetic plastic coatings without disturbing the aesthetic appearance of the denture.
  • the material supply can be reduced because not every dental laboratory has to keep large amounts of prefabricated tooth sleeves in different sizes and shapes in stock.
  • the rapid increase in the E-delmet used in dentistry is prevented in large quantities by the use of the alloys according to the invention, because these alloys are well suited for use in the "one-piece casting process" which is in widespread use.
  • the removable dentures made from the two lots were also observed, as already mentioned in Example 1, during the double prescribed test period.
  • the base plates, anchor clamps and clamp systems showed a good fit and no damage at all during use.
  • the dentures have largely met the requirements.

Landscapes

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

Abstract

Alliage a base de cobalt et de nickel, qui se prete particulierement a la preparation de protheses dentaires. Il presente en effet les qualites suffisantes de resistance a la corrosion et a l'usure, est deformable a froid et maintient bien sa couleur, se travaille facilement a l'etat fondu et presente des valeurs de durete equivalentes a celles des alliages a metaux nobles. L'alliage contient, a part les metaux de base, comme composants principaux 10 a 50% en poids de chrome, 0,2 a 4,5% en poids de gallium. Le nouvel alliage peut contenir en outre egalement 0,05 a 0,08% en poids de lanthane, 0,03 a 0,1% en poids de neodymium et 1,0 a 6,0% en poids de molybdene. A cause de son elasticite et a cause de son faible poids specifique, l'alliage sert particulierement dans le domaine des protheses dentaires fixes. L'alliage sert specialement a la preparation de plaques de base, de crochets d'ancrage et de crochets d'attache de protheses amovibles. Comme cet alliage ne contient aucun metal noble, les substances de base s'obtiennent facilement et les prix de revient ne constituent qu'une fraction des frais necessites par les alliages a metaux nobles.
EP19820900823 1981-03-03 1982-03-03 Alliage a base de cobalt et de nickel, en particulier pour la preparation de protheses dentaires. Withdrawn EP0073228A4 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
HU8181526A HU180626B (hu) 1981-03-03 1981-03-03 Nikkelbázísú ötvözet, elsősorban fogpótlások fémvázainak öntéséhez
HU52681 1981-03-03
HU52781 1981-03-03
HU52781A HU180627B (hu) 1981-03-03 1981-03-03 Kobaltbázisu ötvözet, elsősorban fogpótlások fémvázainak öntéséhez

Publications (2)

Publication Number Publication Date
EP0073228A1 true EP0073228A1 (fr) 1983-03-09
EP0073228A4 EP0073228A4 (fr) 1984-07-05

Family

ID=26317230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820900823 Withdrawn EP0073228A4 (fr) 1981-03-03 1982-03-03 Alliage a base de cobalt et de nickel, en particulier pour la preparation de protheses dentaires.

Country Status (3)

Country Link
US (1) US4459262A (fr)
EP (1) EP0073228A4 (fr)
WO (1) WO1982003007A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4514359A (en) * 1983-03-30 1985-04-30 Austenal International, Inc. Nonprecious dental alloy
WO1990003160A1 (fr) * 1988-09-27 1990-04-05 Leningradsky Tekhnologichesky Institut Imeni Lensoveta Compose de fabrication de modeles de dents pour protheses dentaires fixes en porcelaine
EP0834587A1 (fr) * 1996-10-01 1998-04-08 Siemens Aktiengesellschaft Alliage à base de nickel et article produit avec cet alliage
DE19918426A1 (de) * 1999-04-23 2000-10-26 Manfred Ahlden Dentalaufbrennlegierung
US8683693B2 (en) * 2009-04-17 2014-04-01 Supercharged Production S.R.L. Dental implant apparatus, screw for dental implant apparatus and method of making a screw

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3134670A (en) * 1961-05-18 1964-05-26 Nobilium Products Inc Stainless alloys containing gallium
US3907555A (en) * 1972-12-22 1975-09-23 Howmedica Nickel alloys
DE2525274A1 (de) * 1974-12-24 1976-07-01 Pfizer Bindemittel fuer mit einer nichtedelmetallegierung fuer zahnrestaurationen verschmolzenes porzellan
DE2528547A1 (de) * 1974-12-24 1976-07-08 Pfizer Preiswerte legierung zur verschmelzung mit porzellan
DE2913779A1 (de) * 1978-04-05 1979-10-11 Sankin Ind Co Nickel-chrom-legierung, insbesondere zum giessen von zahnprothetischen formteilen
DE2946863A1 (de) * 1978-11-20 1980-05-29 Unitek Corp Metallbasis fuer zahnersatz und zahnersatz
DE3001126A1 (de) * 1979-06-22 1981-01-08 Neoloy Prod Inc Unedle, korrosionsbestaendige legierung fuer zahnersatzzwecke
FR2615755A1 (fr) * 1987-05-27 1988-12-02 Rwk Rhein Westfael Kalkwerke Materiau inorganique absorbant a base de ciment chaux et d'une matiere siliceuse et procede pour sa preparation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU561562A1 (ru) * 1974-05-17 1977-06-15 Государственный научно-исследовательский и проектный институт редкометаллической промышленности "Гиредмет" Состав дл пломбировани зубов
US4255190A (en) * 1979-10-25 1981-03-10 Neoloy Products, Inc. Essentially non-precious stainless dental alloy

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3134670A (en) * 1961-05-18 1964-05-26 Nobilium Products Inc Stainless alloys containing gallium
US3907555A (en) * 1972-12-22 1975-09-23 Howmedica Nickel alloys
DE2525274A1 (de) * 1974-12-24 1976-07-01 Pfizer Bindemittel fuer mit einer nichtedelmetallegierung fuer zahnrestaurationen verschmolzenes porzellan
DE2528547A1 (de) * 1974-12-24 1976-07-08 Pfizer Preiswerte legierung zur verschmelzung mit porzellan
DE2913779A1 (de) * 1978-04-05 1979-10-11 Sankin Ind Co Nickel-chrom-legierung, insbesondere zum giessen von zahnprothetischen formteilen
DE2946863A1 (de) * 1978-11-20 1980-05-29 Unitek Corp Metallbasis fuer zahnersatz und zahnersatz
DE3001126A1 (de) * 1979-06-22 1981-01-08 Neoloy Prod Inc Unedle, korrosionsbestaendige legierung fuer zahnersatzzwecke
FR2615755A1 (fr) * 1987-05-27 1988-12-02 Rwk Rhein Westfael Kalkwerke Materiau inorganique absorbant a base de ciment chaux et d'une matiere siliceuse et procede pour sa preparation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO8203007A1 *

Also Published As

Publication number Publication date
US4459262A (en) 1984-07-10
WO1982003007A1 (fr) 1982-09-16
EP0073228A4 (fr) 1984-07-05

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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17P Request for examination filed

Effective date: 19830315

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18W Application withdrawn

Withdrawal date: 19841026

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Inventor name: KOMAR KALMAR, JOZSEF