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US20070082307A1 - Dental furnace for producing compacted ceramics - Google Patents

Dental furnace for producing compacted ceramics Download PDF

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Publication number
US20070082307A1
US20070082307A1 US10/550,672 US55067204A US2007082307A1 US 20070082307 A1 US20070082307 A1 US 20070082307A1 US 55067204 A US55067204 A US 55067204A US 2007082307 A1 US2007082307 A1 US 2007082307A1
Authority
US
United States
Prior art keywords
pressure
dental furnace
furnace according
firing chamber
reducers
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.)
Abandoned
Application number
US10/550,672
Other languages
English (en)
Inventor
Kurt Zubler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zubler Geraetebau GmbH
Original Assignee
Zubler Geraetebau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zubler Geraetebau GmbH filed Critical Zubler Geraetebau GmbH
Assigned to ZUBLER GERATEBAU GMBH reassignment ZUBLER GERATEBAU GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ZUBLER, KURT
Publication of US20070082307A1 publication Critical patent/US20070082307A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories or equipment specially adapted for furnaces of these types
    • 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
    • A61C13/20—Methods or devices for soldering, casting, moulding or melting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
    • F27B17/02—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00 specially designed for laboratory use
    • F27B17/025—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00 specially designed for laboratory use for dental workpieces

Definitions

  • the invention relates to a dental furnace for producing compacted ceramics with the preamble features of claim 1 .
  • a prepared workplace In the form of a muffle e.g. a model for a crown
  • a firing chamber in order to be heated there to 850° C. for example before the ceramic mass is pressed with a pneumatically driven ram into the muffle hollow chamber.
  • the pneumatic cylinder for driving the ram sits on a firing chamber with an electric heating coil.
  • the chamber In the firing chamber is usually placed under vacuum once the insertion opening is sealed by means of a bottom plate.
  • the pneumatic cylinder is driven at a pressure which is reduced by a pressure reducer from the laboratory pressure (e.g. 10 bar) by hand to 5 bar for example in order to avoid overtraining the muffle in the firing chamber during the pressing process, since such single-bed masses are relatively sensitive to fracturing In the region of thin wall thicknesses.
  • the dental furnace in accordance with the invention comprises several pressure reducers with a different working pressure, especially three pressure reducers with 4, 5 and 6 bar working or Initial pressure or a proportional pressure regulator In which several different working pressures can be set in an electronically triggered manner, especially In adjustment to the respective saved heating and pressing program. A predetermined adjustment of the pressing pressure to different muffle sizes can thus be achieved.
  • the pressure reducers are advantageously coupled with the electronic control unit, especially via pressure sensors so that the large number of possible heating and pressing curves can be assigned to the respectively appropriate initial or working pressure on the pressing cylinder. A large number of the occurring operating errors can thus be substantially excluded, so that the pressing result can be improved considerably and spilt muffles can be essentially avoided. This Is of relevant Importance in dental furnaces because otherwise the result of many hours of work can be destroyed or irretrievably damaged.
  • the pressure reducers can be pre-assembled as a module and can be fastened as a component, with a duct for the pneumatic lines being preferably provided.
  • the different pressure ranges of 4, 5 and 6 bar of initial pressure for example can also be set, e.g. for different muffles which are preferably used by a dental technician.
  • the differently dimensioned muffle sizes and the number of teeth Inserted therein can also be pre-programmed in order to then monitor the recommended initial pressure by means of sensors.
  • These pressure sensors can be mounted especially simply by insertion Into the ducts mentioned above.
  • several grooves can be pre-formed in a preferably extruded guide column, into which the sensors can be inserted in the simplest manner from above. As a result of such ducts at the upper end of the guide column, the pneumatic lines can also be guided in a protected manner to the pneumatic cylinder placed on top of the firing chamber.
  • FIG. 1 showing a perspective view of a dental furnace
  • FIG. 1 shows a dental furnace I whose principal configuration is briefly described below, it comprises on the one hand a support base 2 to which a guide column 6 is fastened.
  • a pneumatic/electric control section (not shown in closer detail) is constructed In two compartments 2 a , 2 b .
  • a firing chamber 3 is fastened to the upper end of the guide column 6 , in which firing chamber a muffle 5 can be heated to several hundred degrees by means of a heating coil, The respective temperature depends on the pressed or cast material for the dental prosthesis, with the muffle 5 with a cavity for a tooth model being placed on a bottom plate 4 and being upwardly movable by means of a drive 7 , so that the bottom plate 4 seals the firing chamber 3 at the bottom for the heating operation.
  • the bottom plate 4 is placed on a jib 4 a which Is fastened to carriage 7 b of the drive 7 which is movable by a drive motor 7 a.
  • the firing chamber 3 which is relatively heavy by the heating coil and the inserted pneumatic cylinder 10 Is suspended In this case by means of a suspension 3 a at the top in the guide column 6 , which more precisely is in an upwardly open duct 8 and is fastened on the circumference with fixing parts 3 b to the guide column 6 .
  • the fixing parts 3 b are fastened to grooves in the guide column 6 .
  • the relevant aspect in the configuration of the guide column 6 as an extruded profile is the possibility to form at least one duct 8 therein, but preferably several ducts 8 .
  • three such ducts 8 are formed in the guide column 6 in this case, with outlet slots 89 being provided in the lower region of the ducts 8 to the control unit (not shown) on the support base 2 through which a cable harness for example can be guided from the control unit to the firing chamber 3 and pneumatic lines 9 to the pneumatic cylinder 10 .
  • Two pressure reducers 9 a and 9 b are Interposed in the main pneumatic line 9 with a laboratory pressure of 10 bar for example which reduce the system pressure to an initial pressure of 5 bar on the pressure reducer 9 a and to 6 bar on the pressure reducer 9 b.
  • FIG. 1 also shows the configuration of the extruded profile and the stable fastening of drive 7 .
  • the two lateral ducts 8 are used in particular for cabling or pneumatic lines.
  • Sensors can be guided in the grooves adjacent to drive 7 , which grooves are Incorporated simultaneously during the extrusion molding process, In order to monitor the initial pressures of the pressure reducers 9 a , 9 b , i.e. the desired working pressures on the pressure cylinder 10 .
  • the same applies to an alternatively provided proportional pressure regulator which not only allows setting several working pressures, but also a large number of the same in a continuous manner, so that Intermediate pressure ranges of 4.7bar, 4.8 bar, 4.9 bar, etc. can also be triggered electronically in adjustment to the respective stored process parameters.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Clinical Laboratory Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Dentistry (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Dental Preparations (AREA)
  • Dental Prosthetics (AREA)
US10/550,672 2003-03-25 2004-03-25 Dental furnace for producing compacted ceramics Abandoned US20070082307A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10313405A DE10313405A1 (de) 2003-03-25 2003-03-25 Dentaltechnikofen zur Herstellung von Presskeramik
DE10313405.0 2003-03-25
PCT/EP2004/003144 WO2004085943A1 (de) 2003-03-25 2004-03-25 Dentaltechnikofen zur herstellung von presskeramik

Publications (1)

Publication Number Publication Date
US20070082307A1 true US20070082307A1 (en) 2007-04-12

Family

ID=32946159

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/550,672 Abandoned US20070082307A1 (en) 2003-03-25 2004-03-25 Dental furnace for producing compacted ceramics

Country Status (6)

Country Link
US (1) US20070082307A1 (de)
EP (1) EP1618348B1 (de)
AT (1) ATE364824T1 (de)
DE (2) DE10313405A1 (de)
ES (1) ES2287716T3 (de)
WO (1) WO2004085943A1 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110114626A1 (en) * 2009-11-18 2011-05-19 Serrago Daniel F Vacuum Oven
KR101179501B1 (ko) 2010-12-08 2012-09-07 김종택 치과용 소결장치
KR101198965B1 (ko) 2010-06-21 2012-11-07 오스템임플란트 주식회사 치과용 임플란트 보철물 소성을 위한 가압형 소성로
KR101199602B1 (ko) 2010-06-21 2012-11-12 오스템임플란트 주식회사 치과용 임플란트 보철물의 가압 소성 방법
US20130153561A1 (en) * 2011-03-02 2013-06-20 Ivoclar Vivadent Ag Dental firing or press furnace
CN104902845A (zh) * 2013-01-15 2015-09-09 伊沃克拉尔维瓦登特股份公司 牙科用炉
CN106596619A (zh) * 2016-12-14 2017-04-26 中国航空工业集团公司北京航空材料研究院 一种自动氧化循环装置
US9759487B2 (en) 2011-03-02 2017-09-12 Ivoclar Vivadent Ag Dental firing or press furnace
US20190219336A1 (en) * 2016-08-10 2019-07-18 Liaoning Upcera Co., Ltd. Sintering Furnance
US11384982B2 (en) * 2017-05-24 2022-07-12 Liaoning Upcera Co., Ltd. Dual-purpose sintering furnace
WO2023059177A1 (es) * 2021-10-08 2023-04-13 Mejia Trujillo Omar Sistema de inyección para uso dental

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860738A (en) * 1971-04-27 1975-01-14 Karl Hintenberger Firing oven for ceramic material
US6105483A (en) * 1994-09-09 2000-08-22 Yamaha Corporation Cutting apparatus equipped with tool variably pressed against work depending upon working distance
US6252202B1 (en) * 1998-02-10 2001-06-26 Jeneric/Pentron, Inc. Furnace for heat treatment of dental materials
US6851529B2 (en) * 2002-04-18 2005-02-08 Honeywell International Inc. Multifunction vibration isolation strut

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19905666A1 (de) * 1998-02-10 1999-08-26 Jeneric Pentron Brennofen für Zahnersatzmaterialien
DE19844136B4 (de) * 1998-09-25 2005-08-11 Ivoclar Vivadent Ag Ofen für die Herstellung von Zahnersatzteilen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860738A (en) * 1971-04-27 1975-01-14 Karl Hintenberger Firing oven for ceramic material
US6105483A (en) * 1994-09-09 2000-08-22 Yamaha Corporation Cutting apparatus equipped with tool variably pressed against work depending upon working distance
US6252202B1 (en) * 1998-02-10 2001-06-26 Jeneric/Pentron, Inc. Furnace for heat treatment of dental materials
US6851529B2 (en) * 2002-04-18 2005-02-08 Honeywell International Inc. Multifunction vibration isolation strut

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110114626A1 (en) * 2009-11-18 2011-05-19 Serrago Daniel F Vacuum Oven
US8890036B2 (en) 2009-11-18 2014-11-18 Daniel F. Serrago Vacuum oven
US8487220B2 (en) * 2009-11-18 2013-07-16 Daniel F. Serrago Vacuum oven
KR101198965B1 (ko) 2010-06-21 2012-11-07 오스템임플란트 주식회사 치과용 임플란트 보철물 소성을 위한 가압형 소성로
KR101199602B1 (ko) 2010-06-21 2012-11-12 오스템임플란트 주식회사 치과용 임플란트 보철물의 가압 소성 방법
KR101179501B1 (ko) 2010-12-08 2012-09-07 김종택 치과용 소결장치
US8742298B2 (en) * 2011-03-02 2014-06-03 Ivoclar Vivadent Ag Dental firing or press furnace
US20130153561A1 (en) * 2011-03-02 2013-06-20 Ivoclar Vivadent Ag Dental firing or press furnace
US9759487B2 (en) 2011-03-02 2017-09-12 Ivoclar Vivadent Ag Dental firing or press furnace
CN104902845A (zh) * 2013-01-15 2015-09-09 伊沃克拉尔维瓦登特股份公司 牙科用炉
US20190219336A1 (en) * 2016-08-10 2019-07-18 Liaoning Upcera Co., Ltd. Sintering Furnance
US10995992B2 (en) * 2016-08-10 2021-05-04 Liaoning Upcera Co., Ltd Sintering furnance
CN106596619A (zh) * 2016-12-14 2017-04-26 中国航空工业集团公司北京航空材料研究院 一种自动氧化循环装置
US11384982B2 (en) * 2017-05-24 2022-07-12 Liaoning Upcera Co., Ltd. Dual-purpose sintering furnace
WO2023059177A1 (es) * 2021-10-08 2023-04-13 Mejia Trujillo Omar Sistema de inyección para uso dental

Also Published As

Publication number Publication date
EP1618348A1 (de) 2006-01-25
WO2004085943A1 (de) 2004-10-07
ATE364824T1 (de) 2007-07-15
ES2287716T3 (es) 2007-12-16
DE502004004092D1 (de) 2007-07-26
DE10313405A1 (de) 2004-10-07
EP1618348B1 (de) 2007-06-13

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ZUBLER GERATEBAU GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ZUBLER, KURT;REEL/FRAME:018138/0581

Effective date: 20060503

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION