US3340050A - Dental gold alloy - Google Patents
Dental gold alloy Download PDFInfo
- Publication number
- US3340050A US3340050A US430175A US43017565A US3340050A US 3340050 A US3340050 A US 3340050A US 430175 A US430175 A US 430175A US 43017565 A US43017565 A US 43017565A US 3340050 A US3340050 A US 3340050A
- Authority
- US
- United States
- Prior art keywords
- gold
- alloy
- weight
- nickel
- aluminum
- 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 - Lifetime
Links
- 229910001020 Au alloy Inorganic materials 0.000 title description 13
- 239000003353 gold alloy Substances 0.000 title description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 22
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 18
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 18
- 229910052737 gold Inorganic materials 0.000 claims description 14
- 239000010931 gold Substances 0.000 claims description 14
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052759 nickel Inorganic materials 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 229910052763 palladium Inorganic materials 0.000 claims description 9
- 229910052697 platinum Inorganic materials 0.000 claims description 9
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 239000003564 dental alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 description 14
- 239000000956 alloy Substances 0.000 description 14
- 235000010210 aluminium Nutrition 0.000 description 9
- 229910052573 porcelain Inorganic materials 0.000 description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 4
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- -1 molybdenum carbides Chemical class 0.000 description 2
- 229910000907 nickel aluminide Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000943 NiAl Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002670 dental porcelain Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/02—Alloys based on gold
-
- 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
Definitions
- a high temperature deformation resistant gold alloy having the following proportions: 0.1 to 1.1% by weight nickel, 0.10 to 1.00 by weight aluminum, 80 to 90% by weight gold, 1 to by weight platinum, 1 to 10% by weight palladium, and 0.5 to 4% silver.
- the grain size of the alloy is from about 150 to 350 microns.
- the nickel and aluminum form a refractory nickel aluminide which precipitates out within the coarse grains to provide the deformation resistance.
- This invention relates to gold alloys for the base of dental crowns and bridges and more particularly to dental gold alloys.
- Such alloys are known in the art of dentistry as porcelain-golds because the external surface of the crown or bridge is covered with and concealed by a film or thin layer of porcelain to simulate the appearance of natural teeth.
- Porcelain golds must be heated to porcelain baking temperatures in order to build up and bond porcelain material to the gold alloy base.
- the baking temperature is in the range of 1650 F. to 1925 F., with most dental porcelains requiring about 1850 F.
- the gold alloys are subject to creep due to the stresses induced by the alloy weight. In other words, a gold alloy cannot support its own weight in the 1850" F. region.
- the primary object of our present invention is to provide a porcelain gold which is capable of withstanding high temperatures without creep or sag, namely, a gold alloy which is free of the above mentioned disadvantage of known porcelain golds. This object is accomplished according to the present invention in the manner presently described.
- the refractory nickel aluminide compound is formed with a melting point of 3,000 F.
- 0.1 to 1.1% nickel and 0.10 to 1.00 aluminum by weight, preferably 0.25% nickel and 0.10% aluminum by weight in the gold alloy produces this compound.
- the NiAl constituents precipitates on cooling slowly "ice Gold to Platinum 1 to 10 Palladium l to 10 Silver .5 to 4
- the precious metal content of the alloy consisting of gold, platinum and palladium constitutes from 94% to 99% by weight of said alloy.
- the alloy is prepared by mixing the ingredients together in the proportions indicated and heated to a temperature of about 1850 F. in a magnetic induction furnace of a Well known type during which the molten ingredients are automatically and thoroughly mixed together during the heating process. The mix is then allowed to cool to room temperature.
- a coarse grain porcelain-gold dental alloy consisting essentially of between 0.11.1% nickel, 0.10-1.00% aluminum, 0.5-4% silver, 1-10% platinum, 1-10% palladium and the balance gold, said gold being present in the range of 80-90% by weight of the alloy and the combined gold, platinum and palladium contents constituting from 94-99% by weight of the alloy.
- a coarse grain gold dental alloy consisting essentially of the following ingredients: 85.00% by weight gold, 6.00% by Weight platinum, 5.00% by weight palladium, 3.65% by weight silver, 0.25% nickel, and 0.10 by weight aluminum.
- a coarse grain gold alloy according to claim 1 the grain size of said gold alloy being between microns and 300 microns.
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)
Description
United States Patent 3,340,050 DENTAL GOLD ALLOY John P. Nielsen, New York, N. and Joseph J. Tuccillo, Norwalk, Conn., assignors to J. F. Jelenko & Co., Inc., New Rochelle, N.Y., a corporation of New York No Drawing. Filed Feb. 3, 1965, Ser. No. 430,175 4 Claims. (Cl. 75-165) ABSTRACT OF THE DISCLOSURE A high temperature deformation resistant gold alloy is disclosed having the following proportions: 0.1 to 1.1% by weight nickel, 0.10 to 1.00 by weight aluminum, 80 to 90% by weight gold, 1 to by weight platinum, 1 to 10% by weight palladium, and 0.5 to 4% silver. The grain size of the alloy is from about 150 to 350 microns. The nickel and aluminum form a refractory nickel aluminide which precipitates out within the coarse grains to provide the deformation resistance.
This invention relates to gold alloys for the base of dental crowns and bridges and more particularly to dental gold alloys. Such alloys are known in the art of dentistry as porcelain-golds because the external surface of the crown or bridge is covered with and concealed by a film or thin layer of porcelain to simulate the appearance of natural teeth.
Porcelain golds must be heated to porcelain baking temperatures in order to build up and bond porcelain material to the gold alloy base. The baking temperature is in the range of 1650 F. to 1925 F., with most dental porcelains requiring about 1850 F. At these temperatures, the gold alloys are subject to creep due to the stresses induced by the alloy weight. In other words, a gold alloy cannot support its own weight in the 1850" F. region.
This is also a problem for high temperature application in other alloy systems; for example, tool steels, stainless steels, nickel base alloys, SAP (sintered aluminum powder, etc.) The customary solution for these systems is to use the alloy in coarse grain form and to introduce a high melting constituent as a dispersion hardening agent. For tool steels and ferrous alloy heat resistance, the refractory carbides, such as tungsten, chromium and molybdenum carbides, are used. For aluminum, aluminum oxide is the hardening agent.
The primary object of our present invention is to provide a porcelain gold which is capable of withstanding high temperatures without creep or sag, namely, a gold alloy which is free of the above mentioned disadvantage of known porcelain golds. This object is accomplished according to the present invention in the manner presently described.
In the case of gold alloys for porcelain golds, a small amount of nickel is desirable. If a small amount of alumi num is added, the refractory nickel aluminide compound is formed with a melting point of 3,000 F. We have found that 0.1 to 1.1% nickel and 0.10 to 1.00 aluminum by weight, preferably 0.25% nickel and 0.10% aluminum by weight in the gold alloy produces this compound. When a coarse grain alloy is produced containing these additions, the NiAl constituents precipitates on cooling slowly "ice Gold to Platinum 1 to 10 Palladium l to 10 Silver .5 to 4 The precious metal content of the alloy consisting of gold, platinum and palladium constitutes from 94% to 99% by weight of said alloy. The following is a nonlimitation example, the ingredients being in the following proportions by weight:
Percent Gold 85 .00 Platinum "a- 6.00 Palladium 5.00 Silver 3.65 Nickel 0.25 Aluminum 0.10
The alloy is prepared by mixing the ingredients together in the proportions indicated and heated to a temperature of about 1850 F. in a magnetic induction furnace of a Well known type during which the molten ingredients are automatically and thoroughly mixed together during the heating process. The mix is then allowed to cool to room temperature.
It will be understood that the invention is not to be limited to the above description except to the extent required by the scope of the appendix claims.
What is claimed is:
1. A coarse grain porcelain-gold dental alloy consisting essentially of between 0.11.1% nickel, 0.10-1.00% aluminum, 0.5-4% silver, 1-10% platinum, 1-10% palladium and the balance gold, said gold being present in the range of 80-90% by weight of the alloy and the combined gold, platinum and palladium contents constituting from 94-99% by weight of the alloy.
2. The alloy of claim 1 wherein the nickel content is 0.25% and the aluminum content is 0.10%.
3. A coarse grain gold dental alloy consisting essentially of the following ingredients: 85.00% by weight gold, 6.00% by Weight platinum, 5.00% by weight palladium, 3.65% by weight silver, 0.25% nickel, and 0.10 by weight aluminum.
4. A coarse grain gold alloy according to claim 1, the grain size of said gold alloy being between microns and 300 microns.
References Cited UNITED STATES PATENTS 10/ 1925 Davignon 75-165 3/1926 Wise 75-1 65
Claims (1)
1. A COARSE GRAIN PORCELAIN-GOLD DENTAL ALLOY CONSISTING ESSENTIALLY OF BETWEEN 0.1-1.1% NICKEL, 0.10-1.00% ALUMINUM, 0.5-4% SILVER, 1-10% PLATINUM, 1-10% PALLADIUM AND THE BALANCE GOLD, SAID GOLD BEING PRESENT IN THE RANGE OF 80-90% BY WEIGHT OF THE ALLOY AND THE CONBINED GOLD, PLATINUM AND PALLADIUM CONTENTS CONSTITUTING FROM 94-99% BY WEIGHT OF THE ALLOY.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US430175A US3340050A (en) | 1965-02-03 | 1965-02-03 | Dental gold alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US430175A US3340050A (en) | 1965-02-03 | 1965-02-03 | Dental gold alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3340050A true US3340050A (en) | 1967-09-05 |
Family
ID=23706372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US430175A Expired - Lifetime US3340050A (en) | 1965-02-03 | 1965-02-03 | Dental gold alloy |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3340050A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3716356A (en) * | 1970-09-23 | 1973-02-13 | Ney Co J M | Rhenium containing gold alloys |
| US3907555A (en) * | 1972-12-22 | 1975-09-23 | Howmedica | Nickel alloys |
| US4007040A (en) * | 1975-03-05 | 1977-02-08 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler | Hard copper free dental gold alloys |
| US4522783A (en) * | 1982-05-14 | 1985-06-11 | Menicucci Gian F | Metallic alloys to be used in dentistry |
| US4997723A (en) * | 1987-05-13 | 1991-03-05 | Tanaka Dental Enterprises | Metal-porcelain dental restorations, dental veneers, dental bridges and metal foil for use therein and methods for making dental appliances |
| US5186626A (en) * | 1987-05-13 | 1993-02-16 | Asami Tanaka Dental Enterprises | Metal-porcelain dental bridges |
| US5217685A (en) * | 1991-10-03 | 1993-06-08 | The Wilkinson Company | Abutment base alloy for jawbone mounted dental implants |
| US5314109A (en) * | 1993-04-26 | 1994-05-24 | Ormco Corporation | Brazing alloy and method of brazing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1557431A (en) * | 1925-09-04 | 1925-10-13 | Victor D Davignon | Gold alloy and method of making the same |
| US1577995A (en) * | 1925-10-28 | 1926-03-23 | Wadsworth Watch Case Co | White-gold alloy |
-
1965
- 1965-02-03 US US430175A patent/US3340050A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1557431A (en) * | 1925-09-04 | 1925-10-13 | Victor D Davignon | Gold alloy and method of making the same |
| US1577995A (en) * | 1925-10-28 | 1926-03-23 | Wadsworth Watch Case Co | White-gold alloy |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3716356A (en) * | 1970-09-23 | 1973-02-13 | Ney Co J M | Rhenium containing gold alloys |
| US3907555A (en) * | 1972-12-22 | 1975-09-23 | Howmedica | Nickel alloys |
| US4007040A (en) * | 1975-03-05 | 1977-02-08 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler | Hard copper free dental gold alloys |
| US4522783A (en) * | 1982-05-14 | 1985-06-11 | Menicucci Gian F | Metallic alloys to be used in dentistry |
| US4997723A (en) * | 1987-05-13 | 1991-03-05 | Tanaka Dental Enterprises | Metal-porcelain dental restorations, dental veneers, dental bridges and metal foil for use therein and methods for making dental appliances |
| US5186626A (en) * | 1987-05-13 | 1993-02-16 | Asami Tanaka Dental Enterprises | Metal-porcelain dental bridges |
| US5217685A (en) * | 1991-10-03 | 1993-06-08 | The Wilkinson Company | Abutment base alloy for jawbone mounted dental implants |
| US5314109A (en) * | 1993-04-26 | 1994-05-24 | Ormco Corporation | Brazing alloy and method of brazing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4382909A (en) | Gold free alloys for firing on ceramic compositions | |
| US3667936A (en) | Dental alloy | |
| US3340050A (en) | Dental gold alloy | |
| US3928913A (en) | Palladium alloy for ceramic bonding | |
| JPH04246140A (en) | Yellow dental alloy of high gold content | |
| EP1900836B1 (en) | Palladium-cobalt based alloys and dental articles including the same | |
| US5423680A (en) | Palladium, gallium and copper-free alloy having high thermal expansion coefficient | |
| JPS59232248A (en) | Cobalt alloy for manufacturing fixable or mountable false tooth | |
| US3666540A (en) | Noble metal alloys | |
| US3914867A (en) | Dental alloy | |
| JPS6312928B2 (en) | ||
| US4319877A (en) | Palladium-based dental alloy containing indium and tin | |
| JPS60194028A (en) | Gold-poor dental alloy | |
| US6656420B2 (en) | Dental alloys | |
| Moffa | Physical and mechanical properties of gold and base metal alloys | |
| US4261744A (en) | Palladium-based dental alloy containing indium and tin | |
| US4369068A (en) | Gold containing preparation for coating metallic parts | |
| JPS61501784A (en) | dental alloy | |
| US4483821A (en) | Cobalt-chromium dental alloys | |
| US3574611A (en) | High temperature dental gold alloy | |
| US3574610A (en) | Dental gold alloy | |
| JPS59208034A (en) | Palladium-base dental alloy for manufacturing fixable and removable false tooth | |
| US4943483A (en) | Palladium alloy containing gold, silver, gallium, germanium and/or lithium and dental restorations utilizing same | |
| CN103205594B (en) | Palladium-silver alloy material for dental department | |
| JPS62133031A (en) | Castable noble metal alloy for structural element having melting temperature difference exceeding 1500 degree (centigrade) |