US3559961A - Apparatus and method for the production of dental mixtures poor in porosity - Google Patents

Apparatus and method for the production of dental mixtures poor in porosity Download PDF

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Publication number
US3559961A
US3559961A US753178A US3559961DA US3559961A US 3559961 A US3559961 A US 3559961A US 753178 A US753178 A US 753178A US 3559961D A US3559961D A US 3559961DA US 3559961 A US3559961 A US 3559961A
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United States
Prior art keywords
chamber
production
dental
liquid mercury
metal
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Expired - Lifetime
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US753178A
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English (en)
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Gunnar Bergendal
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Individual
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Individual
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/60—Devices specially adapted for pressing or mixing capping or filling materials, e.g. amalgam presses
    • A61C5/68—Mixing dental material components for immediate application to a site to be restored, e.g. a tooth cavity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/70—Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/007—Dust removing devices on working places in dental laboratories, e.g. working by suction
    • 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
    • Y10S366/00—Agitating
    • Y10S366/602—Amalgam mixer, e.g. dental filling

Definitions

  • the invention relates to an apparatus and a method for the production of dental mixtures from a pulverous material and a material in a liquid state, for example a so-called alloy" and mercury respectively for the production of amalgam, and pulverous materials and materials in a liquid state for the production of various dental cements.
  • the dental amalgams used by the dentists today are produced according to international specifications and standard prescriptions.
  • the basic materials of amalgam are file dust of a silver alloy and other metals, so-called alloys, and chemically clean mercury. These two components are mixed by the dentist either through manual mixing in a mortar by means of a pestle or as is more and more usual in a capsule by means of electrically driven shaker apparatuses, so-called amalgamators, which capsule consists of two dismountable halves and in which prescribed amounts of an alloy and mercury are inserted.
  • the temporarily plastic compound obtained after the mixing is then packed under pressure a portion at a time in the bored up cavity of a tooth so that excess mercury is removed and an amalgam as homogeneous as possible which fills out all parts of the cavity is obtained in the cavity as a final product.
  • the object of the present invention is to produce mixtures for tooth stopping such as amalgam mixtures and different cements which are essentially poorer in air and thus in porosities that the hitherto used mixtures of this kind.
  • the object according to the invention is reached by means of an apparatus and a method, wherein the two materials to be mixed in pulverous and liquid states respectively, i.e. especially socalled alloys and mercury respectively, are placed in a chamber which is evacuated down to the lowest practically available value by means of a pump connected to the chamber, so that the powder is substantially removed from air and the two materials are not until then mixed together in the evacuated chamber, preferably by shaking the chamber or by means of a spatula inserted in an airtight manner through the wall of the chamber.
  • FIG. 1 shows schematically a chamber in the form of a capsule having an output to a vacuum pump, which chamber is in tended to be attached to a shaker apparatus or a so-called amalgamator.
  • FIG. 2 shows schematically a chamber having a transparent cover with a spatula inserted airtightly through a diaphragm in the wall of the chamber.
  • the capsule shown in FIG. 1 consists of two parts 1, 2, and has an output 3 to a vacuum pump (not shown) in part 1.
  • a vacuum pump (not shown) in part 1.
  • the alloy and mercury are inserted into it by screwing off the cover or part 1.
  • the cover 1 is put on again and the capsule is attached to the shaker apparatus, whereupon the output 3 is connected e.g. by means of a flexible tube to a vacuum pump.
  • the pump is started and when the pressure in the capsule can be read by means of a pertaining pressure gauge (not shown) to e.g. a few mm.
  • the shaking is started for example with a frequency of about 3,000 cycles per minute, the pump being operating during the whole shaking or mixing operation.
  • the shaker apparatus After a suitable time, which is determined empirically, the shaker apparatus is stopped, air is let into the capsule and the same is removed from the shaker apparatus. Then the tube to the air pump is disengaged from the output 3 and the cover 1 is screwed ofi, whereupon the amalgam mixture is withdrawn and is ready for use.
  • the chamber according to FIG. 2 consists of a bottom part 4 and a plexiglass cover 5.
  • the wall of the plexiglass cover comprises an airtightly connected diaphragm 6 through which is airtightly inserted a spatula 7 for stirring the mixture components consisting of e.g. different dental cements such as phosphate cement, silicate cement, zinc oxide-eugenol cement etc. and lying on a glass plate 8.
  • the cover has an output 9 to a vacuum pump (not shown).
  • the chamber is first evacuated to a suitable pressure, e.g. a few mm. Hg, after the pulverous and liquid components to be mixed have been put upon the glass plate 8.
  • the materials are thereafter mixed by means of the spatula 7 while the pump is operating.
  • the cover is removed and the prepared mixture can be removed.
  • Apparatus for the production of dental mixtures from a pulverous material and a material in a liquid state which apparatus comprises a chamber for the pulverous and liquid materials respectively, wherein the chamber has an output which is connectable to a vacuum pump for evacuation of the chamber before the mixing of the materials is started, said chamber being provided with or being connectable to means for carrying through the mixing, and wherein said chamber consists of a bottom part with a detachable transparent cover and comprises a plate for introduction of the two materials before the evacuation, a spatula being airtightly inserted into said chamber through an airtightly closing diaphragm in the cover for mixing the two materials after evacuation of air from said chamber.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Chemical & Material 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)
  • Dental Preparations (AREA)
US753178A 1967-08-28 1968-08-16 Apparatus and method for the production of dental mixtures poor in porosity Expired - Lifetime US3559961A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE11947/67A SE310754B (xx) 1967-08-28 1967-08-28

Publications (1)

Publication Number Publication Date
US3559961A true US3559961A (en) 1971-02-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
US753178A Expired - Lifetime US3559961A (en) 1967-08-28 1968-08-16 Apparatus and method for the production of dental mixtures poor in porosity

Country Status (4)

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US (1) US3559961A (xx)
DE (1) DE1791001A1 (xx)
GB (1) GB1242585A (xx)
SE (1) SE310754B (xx)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2533820A1 (fr) * 1982-09-30 1984-04-06 Ecole Nale Sup Arts Metiers Procede pour la preparation d'un produit d'obturation dentaire, appareil et spatule pour la mise en oeuvre du procede
US4460340A (en) * 1983-01-21 1984-07-17 Marvin M. Stark Research Corporation Receptacle for dental amalgam
US4871261A (en) * 1988-09-29 1989-10-03 Minnesota Mining And Manufacturing Company Vacuum mixing apparatus for dental materials
FR2636834A1 (fr) * 1988-09-26 1990-03-30 Levy Harry Agitateur de barbotines pour ceramiques dentaires
US4973168A (en) * 1989-01-13 1990-11-27 Chan Kwan Ho Vacuum mixing/bone cement cartridge and kit
US5121990A (en) * 1985-12-23 1992-06-16 Jacques Guiet Device for the preparation of a paste
US5328262A (en) * 1992-02-07 1994-07-12 Mit Ab Method for producing reduced porosity bone cement
US6120174A (en) * 1999-01-14 2000-09-19 Bristol-Myers Squibb Apparatus and method for mixing and dispensing bone cement
EP1159932A1 (en) * 2000-05-31 2001-12-05 GC Corporation Mixer for capsule for dental restoration material
WO2003022171A1 (en) * 2001-09-13 2003-03-20 Kerr Corporation Dental capsule
EP1316296A1 (en) * 2001-12-03 2003-06-04 GC Corporation Mixer for capsule for dental restoration material
US20070280038A1 (en) * 2006-05-24 2007-12-06 Gerd-Ulrich Schmidt Mixing device with vacuum box
WO2016144868A1 (en) * 2015-03-06 2016-09-15 Dentsply Sirona Inc. Dental material delivery system
US20170000585A1 (en) * 2015-07-02 2017-01-05 Voco Gmbh Storage and mixing device for the production of a dental preparation as well as use and process for producing the device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5034054A (en) * 1989-07-03 1991-07-23 Ecoflo, Inc. Process for treating mercury in preparation for disposal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1490214A (en) * 1923-03-05 1924-04-15 Alvin L Johnson Dental amalgam mixer
US2453914A (en) * 1944-04-10 1948-11-16 George M Hollenback Device for mixing plaster compounds and mixtures
US2696022A (en) * 1951-04-23 1954-12-07 Steinbock Investment mixer
US3250518A (en) * 1964-03-16 1966-05-10 Walter J Van Rossem Investment mixer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1490214A (en) * 1923-03-05 1924-04-15 Alvin L Johnson Dental amalgam mixer
US2453914A (en) * 1944-04-10 1948-11-16 George M Hollenback Device for mixing plaster compounds and mixtures
US2696022A (en) * 1951-04-23 1954-12-07 Steinbock Investment mixer
US3250518A (en) * 1964-03-16 1966-05-10 Walter J Van Rossem Investment mixer

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2533820A1 (fr) * 1982-09-30 1984-04-06 Ecole Nale Sup Arts Metiers Procede pour la preparation d'un produit d'obturation dentaire, appareil et spatule pour la mise en oeuvre du procede
US4460340A (en) * 1983-01-21 1984-07-17 Marvin M. Stark Research Corporation Receptacle for dental amalgam
US5121990A (en) * 1985-12-23 1992-06-16 Jacques Guiet Device for the preparation of a paste
FR2636834A1 (fr) * 1988-09-26 1990-03-30 Levy Harry Agitateur de barbotines pour ceramiques dentaires
US4871261A (en) * 1988-09-29 1989-10-03 Minnesota Mining And Manufacturing Company Vacuum mixing apparatus for dental materials
US4973168A (en) * 1989-01-13 1990-11-27 Chan Kwan Ho Vacuum mixing/bone cement cartridge and kit
USRE35276E (en) * 1989-01-13 1996-06-18 Chan; Kwan-Ho Vacuum mixing/bone cement cartridge and kit
US5328262A (en) * 1992-02-07 1994-07-12 Mit Ab Method for producing reduced porosity bone cement
US5501520A (en) * 1992-02-07 1996-03-26 Mit Ab Device for producing reduced porosity bone cement
US6120174A (en) * 1999-01-14 2000-09-19 Bristol-Myers Squibb Apparatus and method for mixing and dispensing bone cement
US6821012B2 (en) 2000-05-31 2004-11-23 Gc Corporation Vacuum assisted mixer for capsule of dental restoration material
US20040141408A1 (en) * 2000-05-31 2004-07-22 Gc Corporation Vacuum assisted mixer for capsule of dental restoration material
EP1159932A1 (en) * 2000-05-31 2001-12-05 GC Corporation Mixer for capsule for dental restoration material
US6776516B2 (en) 2000-05-31 2004-08-17 Gc Corporation Vacuum assisted mixer for capsule of dental restoration material
US6726005B2 (en) 2001-09-13 2004-04-27 Kerr Corporation Dental capsule
WO2003022171A1 (en) * 2001-09-13 2003-03-20 Kerr Corporation Dental capsule
US6733170B2 (en) 2001-12-03 2004-05-11 Gc Corporation Mixer for capsule for dental restoration material
US20030103409A1 (en) * 2001-12-03 2003-06-05 Gc Corporation Mixer for capsule for dental restoration material
EP1316296A1 (en) * 2001-12-03 2003-06-04 GC Corporation Mixer for capsule for dental restoration material
US20070280038A1 (en) * 2006-05-24 2007-12-06 Gerd-Ulrich Schmidt Mixing device with vacuum box
US7438460B2 (en) * 2006-05-24 2008-10-21 Hauschild & Co. Kg Mixing device with vacuum box
WO2016144868A1 (en) * 2015-03-06 2016-09-15 Dentsply Sirona Inc. Dental material delivery system
EP3871631A1 (en) * 2015-03-06 2021-09-01 Dentsply Sirona Inc. Dental material delivery system
US11478332B2 (en) 2015-03-06 2022-10-25 Dentsply Sirona Inc. Dental material delivery system
US20170000585A1 (en) * 2015-07-02 2017-01-05 Voco Gmbh Storage and mixing device for the production of a dental preparation as well as use and process for producing the device

Also Published As

Publication number Publication date
DE1791001A1 (de) 1971-10-21
SE310754B (xx) 1969-05-12
GB1242585A (en) 1971-08-11

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