DE761063C - Use of low-carat alloys for dental purposes - Google Patents

Use of low-carat alloys for dental purposes

Info

Publication number
DE761063C
DE761063C DEH166050D DEH0166050D DE761063C DE 761063 C DE761063 C DE 761063C DE H166050 D DEH166050 D DE H166050D DE H0166050 D DEH0166050 D DE H0166050D DE 761063 C DE761063 C DE 761063C
Authority
DE
Germany
Prior art keywords
alloys
low
dental purposes
gold
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.)
Expired
Application number
DEH166050D
Other languages
German (de)
Inventor
Karl Schoeninger
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.)
C Hafner GmbH and Co KG
Original Assignee
C Hafner 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 C Hafner GmbH and Co KG filed Critical C Hafner GmbH and Co KG
Priority to DEH166050D priority Critical patent/DE761063C/en
Application granted granted Critical
Publication of DE761063C publication Critical patent/DE761063C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C5/00Alloys based on noble metals
    • C22C5/06Alloys based on silver
    • C22C5/10Alloys based on silver with cadmium as the next major constituent
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00Preparations for dentistry
    • A61K6/80Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/84Preparations for artificial teeth, for filling teeth or for capping teeth comprising metals or alloys
    • A61K6/844Noble metals
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C30/00Alloys containing less than 50% by weight of each constituent

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (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)
  • Dental Preparations (AREA)

Description

Gegenstand der Erfindung sind absolut farb- und mundbeständige niederkarätige Legierungen für zahnärztliche Zwecke, insbesondere für Zahnersatzteile, Kronen, Brücken u. dgl. Es ist bekannt, daß Legierungen mit einer entsprechenden Zusammensetzung von Gold-Palladium-Silber und Cadmium schon seit längerer Zeit als schwer anlaufende Legierungen in der Schmuckwarenindustrie und in der Zahnheilkunde Verwendung fanden, jedoch für letzteren Zweck bei weitem nicht den Anforderungen gerecht wurden, da sich bei längerem Tragen unangenehme Verfärbungen der Prothesen im Munde zeigten. The subject of the invention are absolutely colourfast and mouth-resistant low-carat ones Alloys for dental purposes, in particular for tooth replacement parts, crowns, Bridges and the like. It is known that alloys with an appropriate composition of gold-palladium-silver and cadmium have been considered difficult to tarnish for a long time Alloys found in the jewelry industry and in dentistry use, however, for the latter purpose, by far not meeting the requirements, since Unpleasant discoloration of the prosthesis in the mouth after prolonged wear.

Ferner neigen diese Legierungen nach gemachten Erfahrungen zu einer Warmbrüchigkeit infolge zu geringer Festigkeit des Gefügeaufbaues, was bei der Herstellung von Zahnprothesen zu häufigen Mißerfolgen führte. Furthermore, based on experience, these alloys tend to have a Hot brittleness as a result of insufficient structural strength, which occurs during manufacture of dentures led to frequent failures.

Es hat sich nun an Hand einer Reihe von Versuchen überraschenderweise gezeigt, daß bei einer Legierung von beispielsweise 25% Gold, 7% Palladium, 48% Silber, 20% Cadmium durch einen Zusatz von 0,3 bis 2% Platin die Festigkeit des Gefügeaufbaues ganz wesentlich gesteigert, bei einem weiteren Zusatz von o,3 bis 2% Rhodium eine ganz enorme Kornverfeinerung erzielt wird, was eine absolute Mund- und Farbbeständigkeit der Legierungen bei der Verwendung zu zahnärztlichen Arbeiten zur Folge hat. It has now been carried out, surprisingly, on the basis of a number of experiments has shown that with an alloy of, for example, 25% gold, 7% palladium, 48% Silver, 20% cadmium by adding 0.3 to 2% platinum the strength of the The structure of the structure is significantly increased, with a further addition of o, 3 to 2% rhodium a very enormous grain refinement is achieved, which is an absolute oral and color retention of the alloys when used in dental work has the consequence.

Beispiel Eine Legierung von 26% Gold, 7% Palladium, 47% Silber. 20% Cadmium wurde in einer starken Schwefelwasserstoff-Atmosphäre vierzelm Tage gelagert. Hierbei trat eine starke bräunliche Verfärbung ein. Example An alloy of 26% gold, 7% palladium, 47% silver. 20% Cadmium was stored in a strong hydrogen sulfide atmosphere for four or four days. A strong brownish discoloration occurred here.

Eine erfindungsgemäße Legierung von 25% Gold, 7% Palladium. 0.5% Platin, 0.8% Rhodium, 46,7% Silber, 20% Cadmium m der gleichen Schwefelwasserstoff-Atmosphäre vierzehn Tage gelagert zeigte keine Verfärbung. An alloy according to the invention of 25% gold, 7% palladium. 0.5% Platinum, 0.8% rhodium, 46.7% silver, 20% cadmium in the same hydrogen sulfide atmosphere Stored for fourteen days showed no discoloration.

Ferner wurde die Farb- und Mundbeständigkeit der erfindungsgemäßen Legierung durch längeres Tragen von Zahnkronen im Munde praktisch erwiesen. Furthermore, the color and mouth resistance of the invention Alloy has been proven to be practical by wearing dental crowns in the mouth for a long time.

Als weiterer Vorteil ist besonders hervorzuheben, daß die erfindungsgemäße Legierung einen dem Zalmfleisch ähnlichen weichen Farbton aufweist und daher keinen so großen Kontrast wie eine @okarätige gelbe Zahngoldlegierung oder eine weiße Palladium-Silber-Legierung zwischen Zahnfleisch und Prothese verursacht. Another advantage that should be emphasized is that the inventive Alloy has a soft hue similar to Zalm and therefore none as great a contrast as a @ocarat yellow dental gold alloy or a white palladium-silver alloy between the gums and the denture.

Mit den beanspruchten Legierungen werden außerdem sehr beträchtliche Einsparungen an Edelmetallen-Gold und Palladiumerzielt. unter Beibehaltung der für die zahnärztlichen Zwecke besonders wichtigen Eigenschaften, wie sie sonst nur die hochkarätigen Goldlegierungen aufweisen. With the claimed alloys are also very considerable Achieved savings in precious metals - gold and palladium. while maintaining the for the dental purposes are particularly important properties, otherwise only those have high-quality gold alloys.

Claims (2)

P A T E N T A N S P R Ü C H E : 1. Die Verwendung von Legierungen, bestehend aus 15 bis 35% Gold, 5 bis 10% Palladium, 15 bis 30% Cadmium, 0.3 bis 2% Platin, 0.3 bis 2% Rhodium, Rest 35 bis 55% Silber, für zahnärztliche Zwecke, insbesondere für Zahnkronen. P A T E N T A N S P R Ü C H E: 1. The use of alloys, consisting of 15 to 35% gold, 5 to 10% palladium, 15 to 30% cadmium, 0.3 to 2% platinum, 0.3 to 2% rhodium, the remainder 35 to 55% silver, for dental purposes, especially for dental crowns. 2. Die Verwendung von Legierungen nach Anspruch 1, die noch 1 bis 4% Kupfer und 1 bis 4% Zink enthalten, für Platten, Gußstücke und KLammerdrähte. 2. The use of alloys according to claim 1, which still 1 to Contains 4% copper and 1 to 4% zinc, for plates, castings and clamp wires.
DEH166050D 1941-08-14 1941-08-14 Use of low-carat alloys for dental purposes Expired DE761063C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH166050D DE761063C (en) 1941-08-14 1941-08-14 Use of low-carat alloys for dental purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH166050D DE761063C (en) 1941-08-14 1941-08-14 Use of low-carat alloys for dental purposes

Publications (1)

Publication Number Publication Date
DE761063C true DE761063C (en) 1950-10-05

Family

ID=7184170

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH166050D Expired DE761063C (en) 1941-08-14 1941-08-14 Use of low-carat alloys for dental purposes

Country Status (1)

Country Link
DE (1) DE761063C (en)

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