US1465473A - Means for molding backings for artificial teeth - Google Patents

Means for molding backings for artificial teeth Download PDF

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Publication number
US1465473A
US1465473A US574465A US57446522A US1465473A US 1465473 A US1465473 A US 1465473A US 574465 A US574465 A US 574465A US 57446522 A US57446522 A US 57446522A US 1465473 A US1465473 A US 1465473A
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Prior art keywords
molding
backings
bridge
artificial teeth
pattern
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US574465A
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Thomas C Hansen
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/10—Fastening of artificial teeth to denture palates or the like
    • A61C13/102—Fastening of artificial teeth to denture palates or the like to be fixed to a frame
    • A61C13/1023—Facing and backing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S164/00—Metal founding
    • Y10S164/04—Dental

Definitions

  • My invention relates to means for-molding backings-for artificial teeth, and has for its object the provision of a celluloid or other hydrocarbon plate to be used as a pattern in molding the backing.
  • Another object of the invention is the use of such a hydrocarbon plate in connection with the formation of a solid bridge in dental work.
  • Fi ure 1 is a perspective view of the prepare roots of two adjacent teeth.
  • Figure 2 is a sectional View of a tooth with a crown pattern thereon.
  • Figure 3 is a perspective view of such crown patterns.
  • Figure 4 is a perspective view of the completed pattern for bridge work.
  • Figure 5 is a similar perspective view looking from a different angle.
  • Figure 6 is a horizontal section taken on line 6-6, Figure 5.
  • Figure 7 1s a section through a mold, showing the bridge pattern.
  • Figure 8 is a perspective view of the completed bridge
  • Figure 9 is a horizontal section taken through a modified pattern.
  • the numera 1 designates the prepared roots to be crowned and between which a bridge is to be supported. To each of these roots is fitted a hydrocarbon form 2 such as'described in my co-pending application Serial No. 550,154:. As set forth in said applica tion, ,a 36-gauge, 24-carat band 3 is fitted over the prepared root in order to get a proper adaptation therefor without causing irritation to the gums, and the form 2 is connected with the band 3 by casting wax 4.
  • the form 2 is lined with casting wax 5 on its interior, and may have wax applied to the exterior thereof at indicated by numeral 6.
  • the backing for the porcelain tooth 7 is cast integral with the crowns and the mold is made by the use of a hydrocarbon or celluloid plate or form 7 which is provided with a dovetail rib 8 on one face thereof.
  • the backing form 7 is placed between the crown forms and united thereto by casting wax 9, as indicated in Figures 5 and 6.
  • Casting Wax may be added, of course, at any points desired in order to reinforce thebacking and bring the same to the exact shape desired.
  • the completed pattern is then placed in a mold 10 by means of pin 11, and the mold heated to volatilize the casting wax and hydrocarbon forms.
  • the gold or other casting material is then poured into the mold and the entire bridge, including the two crowns and backing, is cast in one piece, as indicated by numeral 12 in Figure 8.
  • the numerals 1, 2, 5 and 9 represent the same elements shown in Fi ures 1 to 8, inclusive, but instead of the 05- luloid plate 7 I have used a celluloid plate 13 provided with the tubular portions 14. This pattern is placed in the mold in the manner previously described and the finished bridge will be provided with two apertures for receiving the pins of the facing which will be cemented to the backing.
  • this bridge may be cast hollow, if desired, and filled on the lingual surface with synthetic porcelain, cast porcelain or any other material to save gold.
  • the method of forming a solid gold bridge which includes preparing crown forms for the adjacent teeth, securing a hydrocarbon backing form between the crown forms, inserting the bridge pattern in a mold, pouring in the molding material, heating the mold to volatilize the pattern, and pouring in molten metal.

Description

Aug. 21, 1923. 3,465,473
. T. c. HANSEN MEANS FOR MOLDING BACKINGS FOR ARTIFICIAL TEETH Filed July 12, 1922 H p I Jwumwm Te @J EANSEN.
(5M Y M 6 mm m Patented Aug. 21, 1923.
PATENT @FlF-EQE.
THOMAS C. HANSEN, OF (FANEY, KANSAS.
Application filed July 12, 1922. Serial N0. 574,465.
1 My invention relates to means for-molding backings-for artificial teeth, and has for its object the provision of a celluloid or other hydrocarbon plate to be used as a pattern in molding the backing.
Another object of the invention is the use of such a hydrocarbon plate in connection with the formation of a solid bridge in dental work.
Other objects and advantages of the in- 2 vention will be apparent from the following description when taken in connection with the accompanying drawing, in which:
Fi ure 1 is a perspective view of the prepare roots of two adjacent teeth.
Figure 2 is a sectional View of a tooth with a crown pattern thereon.
Figure 3 is a perspective view of such crown patterns.
Figure 4 is a perspective view of the completed pattern for bridge work. Figure 5 is a similar perspective view looking from a different angle.
Figure 6 is a horizontal section taken on line 6-6, Figure 5.
Figure 7 1s a section through a mold, showing the bridge pattern.
. Figure 8 is a perspective view of the completed bridge, and
Figure 9 is a horizontal section taken through a modified pattern.
Referrin to the drawing more in detail, the numera 1 designates the prepared roots to be crowned and between which a bridge is to be supported. To each of these roots is fitted a hydrocarbon form 2 such as'described in my co-pending application Serial No. 550,154:. As set forth in said applica tion, ,a 36-gauge, 24-carat band 3 is fitted over the prepared root in order to get a proper adaptation therefor without causing irritation to the gums, and the form 2 is connected with the band 3 by casting wax 4. The form 2 is lined with casting wax 5 on its interior, and may have wax applied to the exterior thereof at indicated by numeral 6.
The backing for the porcelain tooth 7 is cast integral with the crowns and the mold is made by the use of a hydrocarbon or celluloid plate or form 7 which is provided with a dovetail rib 8 on one face thereof.
After the crown patterns are prepared as above described the backing form 7 is placed between the crown forms and united thereto by casting wax 9, as indicated in Figures 5 and 6. Casting Wax may be added, of course, at any points desired in order to reinforce thebacking and bring the same to the exact shape desired. The completed pattern is then placed in a mold 10 by means of pin 11, and the mold heated to volatilize the casting wax and hydrocarbon forms. After the pattern is volatilized the gold or other casting material is then poured into the mold and the entire bridge, including the two crowns and backing, is cast in one piece, as indicated by numeral 12 in Figure 8.
In the modified form of the invention shown in Figure 9 the numerals 1, 2, 5 and 9 represent the same elements shown in Fi ures 1 to 8, inclusive, but instead of the 05- luloid plate 7 I have used a celluloid plate 13 provided with the tubular portions 14. This pattern is placed in the mold in the manner previously described and the finished bridge will be provided with two apertures for receiving the pins of the facing which will be cemented to the backing.
rom the foregoing description it will be seen that I have provided a novel article points desired, as
- and method for casting bridge work in one piece which presents an advantage over the soldering method, in that shrinkage and expansion are eliminated. Furthermore, there is a great saving in time in assemblin and finishing the backing and crowns. It s ould also be noted that this bridge may be cast hollow, if desired, and filled on the lingual surface with synthetic porcelain, cast porcelain or any other material to save gold.
- In accordance with the patent statutes, I have described what 1 now believe to be the best embodiment of the invention, but I do not wish to be understood thereby 'aslimiting myself or the scope of the invention, as many changes and modifications may be made without departing from the spirlt of a hydrocarbon backing form between the crown forms and uniting the crown forms and backing form by casting wax.
3. The method of forming a solid gold bridge which includes preparing crown forms for the adjacent teeth, securing a hydrocarbon backing form between the crown forms, inserting the bridge pattern in a mold, pouring in the molding material, heating the mold to volatilize the pattern, and pouring in molten metal.
THOMAS C. HANSEN.
US574465A 1922-07-12 1922-07-12 Means for molding backings for artificial teeth Expired - Lifetime US1465473A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486327A (en) * 1946-10-04 1949-10-25 Rothwell Peter Method and means for producing dental bridgework
US2602226A (en) * 1948-01-29 1952-07-08 Charles K Peck Artificial teeth and backing therefor
US3224050A (en) * 1961-05-20 1965-12-21 Redtenbacher Kurt Pre-fabricated dental frame model with a seal facilitating groove
US3315358A (en) * 1963-10-02 1967-04-25 Westward Dental Products Compa Method of making a dental bridge
US3375582A (en) * 1963-03-01 1968-04-02 Myerson Tooth Corp Prefabricated veneer and matching destructible backing pattern for dental restorations
US4163318A (en) * 1977-03-21 1979-08-07 Pasquale Tigani Device for replacing missing teeth in human dentition
US4176706A (en) * 1977-06-29 1979-12-04 Been Larry C Apparatus and method for making bridgework
US4249591A (en) * 1979-06-14 1981-02-10 Been Larry C Apparatus for making dental bridgework
GB2226573A (en) * 1988-11-19 1990-07-04 Samsung Electronic Devices Dispenser cathode
US20040014007A1 (en) * 2002-07-19 2004-01-22 Chin-Sheng Lee Bridge assembly for positioning a denture
CN100418492C (en) * 2002-07-25 2008-09-17 李锦声 Inlaid combined fixed dental bridge device
US20130165545A1 (en) * 2011-12-23 2013-06-27 Vincent J. Morgan Bonding together resin nano ceramic blocks

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486327A (en) * 1946-10-04 1949-10-25 Rothwell Peter Method and means for producing dental bridgework
US2602226A (en) * 1948-01-29 1952-07-08 Charles K Peck Artificial teeth and backing therefor
US3224050A (en) * 1961-05-20 1965-12-21 Redtenbacher Kurt Pre-fabricated dental frame model with a seal facilitating groove
US3375582A (en) * 1963-03-01 1968-04-02 Myerson Tooth Corp Prefabricated veneer and matching destructible backing pattern for dental restorations
US3315358A (en) * 1963-10-02 1967-04-25 Westward Dental Products Compa Method of making a dental bridge
US4163318A (en) * 1977-03-21 1979-08-07 Pasquale Tigani Device for replacing missing teeth in human dentition
US4176706A (en) * 1977-06-29 1979-12-04 Been Larry C Apparatus and method for making bridgework
US4249591A (en) * 1979-06-14 1981-02-10 Been Larry C Apparatus for making dental bridgework
GB2226573A (en) * 1988-11-19 1990-07-04 Samsung Electronic Devices Dispenser cathode
GB2226573B (en) * 1988-11-19 1992-12-02 Samsung Electronic Devices Method of manufacturing a porous pellet for a dispenser cathode
US20040014007A1 (en) * 2002-07-19 2004-01-22 Chin-Sheng Lee Bridge assembly for positioning a denture
CN100418492C (en) * 2002-07-25 2008-09-17 李锦声 Inlaid combined fixed dental bridge device
US20130165545A1 (en) * 2011-12-23 2013-06-27 Vincent J. Morgan Bonding together resin nano ceramic blocks

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