US104879A - Improved composition amalgam for filling teeth - Google Patents
Improved composition amalgam for filling teeth Download PDFInfo
- Publication number
- US104879A US104879A US104879DA US104879A US 104879 A US104879 A US 104879A US 104879D A US104879D A US 104879DA US 104879 A US104879 A US 104879A
- Authority
- US
- United States
- Prior art keywords
- amalgam
- improved composition
- filling teeth
- teeth
- filling
- 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
- 229910000497 Amalgam Inorganic materials 0.000 title description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000018984 mastication Effects 0.000 description 1
- 238000010077 mastication Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
Definitions
- amalgam now used by dentists for the above purpose is composed of tin, silver, and mercury, com bined in or about in equal parts, which has, however, many objectionable features, which the new amalgam obviates.
- the newly compounded amalgam is composed of about twenty parts, by weight, of refined nickel, twenty-five parts Banca' tin, and forty-five parts silver, which ingredients are to be fused, and chemically united in a crucible.
- This bar when well fused and mixed the contents of the crucible are to be cast into the form of an ingot or oblong bar.
- This bar when cold, is to be adjusted in a lathe, and, by a tool, cut into very thin shavings, which shavings will then be ready to be mixed with, and dissolved by, a sufiicient amount of mercury to constitute a crystallizing cement or amalgam, which, after being washed in ninety-five per cent.
- the amalgam as heretofore made and used by dentists, rapidly undergoes oxidation when exposed to the acids incident to the mouth, and has a strong tendency to contract in the act of crystallization, thus admitting moisturebetwcen it and the interior surface of the dental cavity; is not sufiiciently hard to withstand the friction incident to mastication, and oxidizes upon surface, theoxide operating to hlacken the body oi the tooth, and also to injure, ifnot to destroy, 1tsvascular structure.
- the extreme hardness, brightness, and fineness of refined niclcehnvh'en compounded into the new amalgam the latter is less liable to be affected by-oxidation, contraction, and friction than the old amalgam in common use.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Dental Preparations (AREA)
Description
cited tates 1 Letters Patent No. 104,87
9, dated June 28, 1870.
IMPROVED COMPOSITION AMALG-AMQ POR FILLING TEETH.
, The Schedule referred to in these Letters Patent and making par!- of the same.
To all persons to whom these presents may come:
Be it known that I, LUKE A. PLUMB, of Boston, of the county. of Suffolk and State of Massachusetts, have invented a new or improved Composition or Amalgam, to be used .for the purpose of preventing decay in, or for filling, orifices in teeth; and I do hereby declare the following to be a full and exact description of the same.
The amalgam now used by dentists for the above purpose is composed of tin, silver, and mercury, com bined in or about in equal parts, which has, however, many objectionable features, which the new amalgam obviates.
The newly compounded amalgam is composed of about twenty parts, by weight, of refined nickel, twenty-five parts Banca' tin, and forty-five parts silver, which ingredients are to be fused, and chemically united in a crucible. When well fused and mixed the contents of the crucible are to be cast into the form of an ingot or oblong bar. This bar, when cold, is to be adjusted in a lathe, and, by a tool, cut into very thin shavings, which shavings will then be ready to be mixed with, and dissolved by, a sufiicient amount of mercury to constitute a crystallizing cement or amalgam, which, after being washed in ninety-five per cent.
alcohol, and dried by a gentle heat, will be ready for tal cavity, in which it will be an efinsertion in a den docmnposition of fectual means of arresting further become as hard the tooth, as it will, in .a few hours, and as durable as the tooth itself.
The amalgam, as heretofore made and used by dentists, rapidly undergoes oxidation when exposed to the acids incident to the mouth, and has a strong tendency to contract in the act of crystallization, thus admitting moisturebetwcen it and the interior surface of the dental cavity; is not sufiiciently hard to withstand the friction incident to mastication, and oxidizes upon surface, theoxide operating to hlacken the body oi the tooth, and also to injure, ifnot to destroy, 1tsvascular structure. By virtue of the extreme hardness, brightness, and fineness of refined niclcehnvh'en compounded into the new amalgam, the latter is less liable to be affected by-oxidation, contraction, and friction than the old amalgam in common use.
I make no claim to a composition 0 tin, silver, and mercury as heretofore used.
What I do claim as my invention is-- My'new composition or amalgam, made of the'corn-' bination of nickel and other ingredients, as hereinhefore explained. I
LUKE A. PLUMB.
Witnesses R. H. EDDY, J. R. Snow.
r amalgam of
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US104879A true US104879A (en) | 1870-06-28 |
Family
ID=2174361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US104879D Expired - Lifetime US104879A (en) | Improved composition amalgam for filling teeth |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US104879A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3778259A (en) * | 1971-05-20 | 1973-12-11 | G Viglione | Alloy of tin, silver and nickel |
| US20070260343A1 (en) * | 2006-03-16 | 2007-11-08 | Sebastien Raoux | Methods and apparatus for improving operation of an electronic device manufacturing system |
-
0
- US US104879D patent/US104879A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3778259A (en) * | 1971-05-20 | 1973-12-11 | G Viglione | Alloy of tin, silver and nickel |
| US20070260343A1 (en) * | 2006-03-16 | 2007-11-08 | Sebastien Raoux | Methods and apparatus for improving operation of an electronic device manufacturing system |
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