US123271A - Improvement in artificial teeth - Google Patents
Improvement in artificial teeth Download PDFInfo
- Publication number
- US123271A US123271A US123271DA US123271A US 123271 A US123271 A US 123271A US 123271D A US123271D A US 123271DA US 123271 A US123271 A US 123271A
- Authority
- US
- United States
- Prior art keywords
- crown
- artificial
- root
- improvement
- pins
- 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
- 229910000743 fusible alloy Inorganic materials 0.000 description 4
- 210000004268 dentin Anatomy 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000332 tooth crown Anatomy 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
Definitions
- This invention has for its object the connecting and permanently securing to the natural root an artificial crown; and consists in providing the crown with an under-cut or dovetail mortise, by means of which it is secured to the root, substantially as hereinafter set forth.
- Figure l is a section of the crown, showing the under-cut or dovetail lnortise.
- Fig. 2 is abottom View of the same.
- Fig. 3 is a side view ofthe root.
- Fi g. 4 is a front view of the root, showing the screws.
- Fig. 5 is a modification of the crown, and Fig. 6 is a cross-section of the same.
- A represents the under-cut or dovetail in the artificial crown, and b b the pins in the root.
- I first fill the nervecavity in the root with gold or other appropriate filling, and then, at the anterior and posterior side of the filling, I drill into the solid dentine a hole for the admission of the pins b b, upon which are out small screwthreads. The pins are then tirmly secured in the holes.
- I nowv fill the under cut with a fusible metalone that will fuse at a low degree of temperature, (such as the compound known as Voods fusible metal)-and while yet soft I press the crown firmly over the pins b I).
- top of the root is slightly excavated, and the bottom of the crown so rounded or shaped as to.
- An artificial crown .provided with an under-eut or dovetail mortise, in combination with two continuous screw-pins, said pins being firmly secured in the solid dentine ofthe natural fan g or root, and the two parts held together by means of a fusible alloy in said under-cut, substantially as herein described.
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Description
C. H-AMACK.
Improyeme'nt in Artificial Teeth..
No4. 123,271. v Patemedjan. 3o, 1872.
CHARLEs H. MACK, OF PORTLAND, OREGON.
IMPROVEMENT IN ARTIFICIAL TEETH.
Specification forming part of Letters Patent No. 123,271, dated January 30, 187;.
SPECIFICATION. To all vwhom it may concern:
Be it known that I, (l. H. MACK, of Portland, in the county of Multnomah and State of Oregon, have invented certain new and useful ImprovementsinArtificial Teeth; and I do hereby declare that the following is a full, clear, and exact description thereof', reference being had to the accompanying drawing and to the letters of reference marked thereon which form a part of this specification.
This invention has for its object the connecting and permanently securing to the natural root an artificial crown; and consists in providing the crown with an under-cut or dovetail mortise, by means of which it is secured to the root, substantially as hereinafter set forth.
To enable others skilled in the art to which my invention relates, I will now describe its construction and mode of Operation.
Figure l is a section of the crown, showing the under-cut or dovetail lnortise. Fig. 2 is abottom View of the same. Fig. 3 is a side view ofthe root. Fi g. 4 is a front view of the root, showing the screws. Fig. 5 is a modification of the crown, and Fig. 6 is a cross-section of the same.
A represents the under-cut or dovetail in the artificial crown, and b b the pins in the root. I first fill the nervecavity in the root with gold or other appropriate filling, and then, at the anterior and posterior side of the filling, I drill into the solid dentine a hole for the admission of the pins b b, upon which are out small screwthreads. The pins are then tirmly secured in the holes. I nowv fill the under cut with a fusible metalone that will fuse at a low degree of temperature, (such as the compound known as Voods fusible metal)-and while yet soft I press the crown firmly over the pins b I).
It will be particularly observed that the top of the root is slightly excavated, and the bottom of the crown so rounded or shaped as to.
fit snugly therein. Thus the two parts, when `joined together as described, will form a strong and durable tooth.
I am aware that artificial crowns have been provided with round holes for the insertion of single pins; but it is observed that it will be impossible to so firmly secure the crown to the fang as in my method of constructing` the mortise, for two reasons: first, because the round hole will not retain the fusible alloy so well; and secondly, because the crown is only secured at the center instead of both the anterior and posterior portions thereof. I am also aware that artificial gums have also been constructed with dovetail slots; but the principle involved is totally different from that shown in my invention, as my object is to use the natu 1al fang in connection with an artificial crown, and so securing the two that a tooth may be inserted as good and as strong as it' grown in the mouth, without the pain of extracting the root. I am also aware that a recess has been formed on the outer surface of the crown; but this differs from my invention, as the mortise thus constructed will not retain or hold the fusible alloy.
Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is
l.v An artificial tooth-crown for pivot-teeth, with an elongated mortise extending toward the labial and back toward the lingual surfaces sufiiciently far to receive two pins or screws located in the anterior and posterior portions of the fangs, said mortise or undercut being dovetailed or otherwise shaped to retain firmly its fill of fusible alloy, substantially as set forth.
2. An artificial crown, .provided with an under-eut or dovetail mortise, in combination with two continuous screw-pins, said pins being firmly secured in the solid dentine ofthe natural fan g or root, and the two parts held together by means of a fusible alloy in said under-cut, substantially as herein described.
In testimony that I claim the foregoing' as my own I affix my signature in presence of two witnesses.
. CHAS. H. MACK.
Witnesses:
T. H. ALEXANDER, C. ALEXANDER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US123271A true US123271A (en) | 1872-01-30 |
Family
ID=2192707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US123271D Expired - Lifetime US123271A (en) | Improvement in artificial teeth |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US123271A (en) |
-
0
- US US123271D patent/US123271A/en not_active Expired - Lifetime
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