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EP0794740A1 - Procedure for the production of ceramic tooth restorations and materials for distance, separation and substructure for the carrying out of the procedure - Google Patents

Procedure for the production of ceramic tooth restorations and materials for distance, separation and substructure for the carrying out of the procedure

Info

Publication number
EP0794740A1
EP0794740A1 EP95918553A EP95918553A EP0794740A1 EP 0794740 A1 EP0794740 A1 EP 0794740A1 EP 95918553 A EP95918553 A EP 95918553A EP 95918553 A EP95918553 A EP 95918553A EP 0794740 A1 EP0794740 A1 EP 0794740A1
Authority
EP
European Patent Office
Prior art keywords
substructure
fact
master model
oxide
procedure
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.)
Withdrawn
Application number
EP95918553A
Other languages
German (de)
French (fr)
Inventor
Leonhardt Dirk
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0794740A1 publication Critical patent/EP0794740A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • 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
    • A61C5/70—Tooth crowns; Making thereof
    • A61C5/77—Methods or devices for making crowns
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/20—Protective coatings for natural or artificial teeth, e.g. sealings, dye coatings or varnish
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
    • A61K6/807—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising magnesium oxide
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/802—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics
    • A61K6/818—Preparations for artificial teeth, for filling teeth or for capping teeth comprising ceramics comprising zirconium oxide
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
    • A61K6/831—Preparations for artificial teeth, for filling teeth or for capping teeth comprising non-metallic elements or compounds thereof, e.g. carbon
    • A61K6/836—Glass

Definitions

  • the present invention relates to a procedure for the manu ⁇ facture of ceramic tooth restorations using a master model of plaster, and which comprises a substructure of aluminium oxide and an infiltration material of glass and several layers of glass ceramic.
  • the first step is the production of a master model of plaster on the basis of an impression.
  • This master model is given distance varnish, and a duplicating mould of a silicone material is produced.
  • the stresses in the duplicating mould have been relieved it is cast in special plaster.
  • the spe ⁇ cial plaster model is removed from the mould.
  • a sub ⁇ structure material which contains oxide ceramic is stirred.
  • This material is applied with a brush to the special plaster model, which is thereafter heated to 1120°C for ten hours.
  • the substructure When cooled the substructure is removed from the special plaster, and the fit of the substructure is checked on the master model. Hereafter a glass material is applied to the substructure, which is then baked in a special chamber at 1100°C for 4£ hours.
  • Claim 2 relates to a preferred drying temperature and drying time for the master model which has been supplied with substructure material.
  • Claim 3 relates to a preferred heat treatment of the substructure.
  • Claim 4 relates to control of the substructure and the subsequent application of glass.
  • the invention also relates to a separation material and a substructure material to be used in the carrying out of the procedure according to the invention.
  • Claim 5 relates to a preferred composition of a separation material according to the invention.
  • Claim 6 relates to a preferred mixing ratio of the components in a separation material according to the invention.
  • Claim 7 relates to a preferred composition of a substructure material according to the invention.
  • Claim 8 relates to a preferred method of production and the mix proportion of the components in a substructure material according to the invention.
  • Claim 9 relates to a first form for oxide ceramic to be used in a substructure material according to invention.
  • Claim 10 relates to another form of oxide ceramic to be used in a substructure material according to the invention.
  • Claim 11 relates to a third form of oxide ceramic to be used in a substructure material according to the invention.
  • claim 12 relates to a fourth form of oxide ceramic to be used in a substructure material according to the invention.
  • fig. 1 shows a master model onto which is applied a layer of distance material and a layer of separation material
  • fig. 2 shows a partial cross-section corresponding to the illustration in fig. 1, which partial section is applied with a substructure material on top of the separation material
  • fig. 3 shows the master model with the substructure removed, after drying
  • fig. 4 shows the substructure removed from the master model, after drying
  • fig. 5 shows in a partial cross-section a ceramic tooth filling which is built up on a substructure
  • fig. 6 shows auxiliary parts of metal for the production of a suprastructure on implants
  • fig. 7 shows the parts shown in fig. 6 joined and in the process of application with separation material
  • fig. 8 is a picture similar to the one in fig. 7 in which a sectional view shows the substructure material after application,
  • fig. 9 shows a master model with implant dummies
  • fig. 10 shows a picture similar to the one in fig. 9, in which attachment elements have been firmly screwed onto the implant dummies, and
  • fig. 11 shows a picture similar to the one in fig. 10, where the attachment elements have been combined with a substructure.
  • the procedure according to the invention is first to apply a layer of distance material 2, which may consist of wax, onto the master model 1, and then a layer of separation material 3, which to advantage can consist of fully combustible plasticine and chloroform in such a mixing ratio as to be applicable with a brush at 22°C, but which hardens at 20°C. These properties are obtainable with a mixing ratio of 6 g of plasticine to 30 ml chloroform.
  • a modelling substructure material 4 is hereafter applied on top of the separation material 3.
  • the substructure material 4 can consist of demineralised water, cellulose powder, sugar and an oxide ceramic, and it can be produced by first making a liquid, with a mixing ratio of 75 ml demineralised water to which is added 0*5 g cellulose derivative and stirring it for approx. one minute, whereafter the mixture is passed through a chemical paper filter and adding 5 g sugar, whereafter 1'32 ml of this liquid is mixed with 10 g of oxide ceramic.
  • an oxide ceramic can be used either aluminium oxide, zir ⁇ conium oxide, magnesium oxide, a mixture of aluminium oxide and zirconium oxide, a mixture of magnesium oxide and zirco ⁇ nium oxide, or a mixture of aluminium oxide and magnesium oxide.
  • the separation material 3 prevents the substructure material 4 from drying out during the process of application onto the master model. At the same time the separation material 3 dif- funds into both the plaster in the master model and into the substructure material 4 during the drying process, so that the substructure material as shown in fig. 3 and 4, after the drying process is easy to remove from the master model as an independent substructure unit without damage to the master model.
  • the substructure 4 is heat treated first at 500°C for 10 minutes, whereby the bonding agent is removed, and thereafter at 1120°C for 2 hours in a special chamber, in which the material is sintered, and then the object is cooled.
  • the substructure 4 is checked on the master model 1, whereafter the surface of the substruc ⁇ ture 4 is given a layer of glass and then heated to 1100°C for 2-4 hours, whereby the glass material is absorbed in the substructure material.
  • metal pins In tooth restorations where one or more of the patients teeth have fallen out it is possible to operate one or more carry ⁇ ing metal pins, so-called implants, into the patient's jaw bone.
  • These metal pins are embodied with a threaded hole and are tapering off at the upper end.
  • These metal pins can ac ⁇ commodate a single male threaded tooth crown or a bridge, which can be of the shape of a beam supported in a simple manner or as a single or double corbelled beam, which must have the required bending strength and consequently be made of metal.
  • Fig. 6 shows an auxiliary tool for the production of an attachment element 16 of ceramic.
  • the tool consists of two metal rods 6 and 7.
  • the rod 6 is at one end embodied with a threaded section 8, then comes a cylindrical section 9, which ends with a shoulder 10 and following that there is a conical section 11.
  • the conical part 13 ends in a shoulder 14.
  • the rods 6 and 7 are joined as shown in fig. 7 by screwing the threaded part 8 into the threaded hole 12. Thereafter separation material 3 is applied to the surfaces 9,11 and 13, whereafter - as shown in fig. 8 - sub ⁇ structure material 4 is applied with a desired shape.
  • the substructure material can be re ⁇ moved as an independent unit 16, which is heat treated.
  • a substructure 17 is built up consisting of a slurry of substructure material as described above between the individual attachment elements. The whole bridge can then be loosened from the master model and heat treated and coated with glass as described above.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Plastic & Reconstructive Surgery (AREA)
  • Dentistry (AREA)
  • Engineering & Computer Science (AREA)
  • Dental Preparations (AREA)

Abstract

In the procedure a substructure (4) is produced by modelling directly on a master model (1) to which has been applied a layer of distance material (2) and a layer of separation material (3). After drying of the master model (1) with applied substructure material for one minute at 80 °C the substructure material (4) can be removed from the master model (1) as an independent substructure, which is heat treated first by heating to 500 °C for at most 10 minutes, whereby the bonding agent is removed, and thereafter by heating to 1120 °C for 2 hours, whereby the material is sintered. After cooling the substructure (4) is checked on the master model (1), whereafter a layer of glass is applied and thereafter heated to 1100 °C for 2-4 hours whereby an infiltration of glass in the substructure material takes place. After removal of the excess glass a ceramic can be applied in the known manner. The separation material (2) consists of a mixture of completely combustible plasticine and chloroform in a mixing ratio enabling the material to be applied with a brush at 22 °C, but to harden at approx. 20 °C. The substructure material (4) consists of demineralised water, cellulose powder, sugar and oxide ceramic.

Description

O 95/35070 PC17DK95/00197
Procedure for the production of ceramic tooth re¬ storations and materials for distance,separation and substructure for the carrying out of the procedure.
The present invention relates to a procedure for the manu¬ facture of ceramic tooth restorations using a master model of plaster, and which comprises a substructure of aluminium oxide and an infiltration material of glass and several layers of glass ceramic.
In the known procedure the first step is the production of a master model of plaster on the basis of an impression. This master model is given distance varnish, and a duplicating mould of a silicone material is produced. When the stresses in the duplicating mould have been relieved it is cast in special plaster. After the special plaster has set, the spe¬ cial plaster model is removed from the mould. Next a sub¬ structure material which contains oxide ceramic is stirred.
This material is applied with a brush to the special plaster model, which is thereafter heated to 1120°C for ten hours.
When cooled the substructure is removed from the special plaster, and the fit of the substructure is checked on the master model. Hereafter a glass material is applied to the substructure, which is then baked in a special chamber at 1100°C for 4£ hours.
When cooled the excess glass is removed, and an extra layer of glass ceramic is applied.
This known procedure is cumbersome and time consuming and therefore expensive in use. Furthermore, it is not possible to perform casting on metal, wherefore the procedure cannot be used for tooth restorations on the basis of implants.
It is a purpose of the present invention to describe a procedure for the production of ceramic tooth restorations, which does not involve the drawbacks of the known procedures.
This can be achieved by the procedure described in claim 1.
Claim 2 relates to a preferred drying temperature and drying time for the master model which has been supplied with substructure material. Claim 3 relates to a preferred heat treatment of the substructure.
Claim 4 relates to control of the substructure and the subsequent application of glass.
The invention also relates to a separation material and a substructure material to be used in the carrying out of the procedure according to the invention.
Claim 5 relates to a preferred composition of a separation material according to the invention.
Claim 6 relates to a preferred mixing ratio of the components in a separation material according to the invention.
Claim 7 relates to a preferred composition of a substructure material according to the invention.
Claim 8 relates to a preferred method of production and the mix proportion of the components in a substructure material according to the invention.
Claim 9 relates to a first form for oxide ceramic to be used in a substructure material according to invention.
Claim 10 relates to another form of oxide ceramic to be used in a substructure material according to the invention.
Claim 11 relates to a third form of oxide ceramic to be used in a substructure material according to the invention,
claim 12 relates to a fourth form of oxide ceramic to be used in a substructure material according to the invention.
The invention is explained in detail below with reference to the drawing in which
fig. 1 shows a master model onto which is applied a layer of distance material and a layer of separation material, fig. 2 shows a partial cross-section corresponding to the illustration in fig. 1, which partial section is applied with a substructure material on top of the separation material,
fig. 3 shows the master model with the substructure removed, after drying,
fig. 4 shows the substructure removed from the master model, after drying
fig. 5 shows in a partial cross-section a ceramic tooth filling which is built up on a substructure,
fig. 6 shows auxiliary parts of metal for the production of a suprastructure on implants,
fig. 7 shows the parts shown in fig. 6 joined and in the process of application with separation material, and
fig. 8 is a picture similar to the one in fig. 7 in which a sectional view shows the substructure material after application,
fig. 9 shows a master model with implant dummies,
fig. 10 shows a picture similar to the one in fig. 9, in which attachment elements have been firmly screwed onto the implant dummies, and
fig. 11 shows a picture similar to the one in fig. 10, where the attachment elements have been combined with a substructure.
As shown in fig. 1 the procedure according to the invention is first to apply a layer of distance material 2, which may consist of wax, onto the master model 1, and then a layer of separation material 3, which to advantage can consist of fully combustible plasticine and chloroform in such a mixing ratio as to be applicable with a brush at 22°C, but which hardens at 20°C. These properties are obtainable with a mixing ratio of 6 g of plasticine to 30 ml chloroform. As shown in fig. 2 a modelling substructure material 4 is hereafter applied on top of the separation material 3. Ac¬ cording to the invention the substructure material 4 can consist of demineralised water, cellulose powder, sugar and an oxide ceramic, and it can be produced by first making a liquid, with a mixing ratio of 75 ml demineralised water to which is added 0*5 g cellulose derivative and stirring it for approx. one minute, whereafter the mixture is passed through a chemical paper filter and adding 5 g sugar, whereafter 1'32 ml of this liquid is mixed with 10 g of oxide ceramic.
As an oxide ceramic can be used either aluminium oxide, zir¬ conium oxide, magnesium oxide, a mixture of aluminium oxide and zirconium oxide, a mixture of magnesium oxide and zirco¬ nium oxide, or a mixture of aluminium oxide and magnesium oxide.
Then the master model with the applied layer of substructure material 4 is dried for approx. one minute at 80°C.
The separation material 3 prevents the substructure material 4 from drying out during the process of application onto the master model. At the same time the separation material 3 dif- funds into both the plaster in the master model and into the substructure material 4 during the drying process, so that the substructure material as shown in fig. 3 and 4, after the drying process is easy to remove from the master model as an independent substructure unit without damage to the master model.
Thereafter the substructure 4 is heat treated first at 500°C for 10 minutes, whereby the bonding agent is removed, and thereafter at 1120°C for 2 hours in a special chamber, in which the material is sintered, and then the object is cooled.
After the cooling process the substructure 4 is checked on the master model 1, whereafter the surface of the substruc¬ ture 4 is given a layer of glass and then heated to 1100°C for 2-4 hours, whereby the glass material is absorbed in the substructure material.
After the cooling process the excess glass is trimmed off, and an extra layer of ceramic 5 is applied in the known manner. It is possible to produce a tooth restoration according to the invention in 8J hours, where the known procedures take 18j hours.
In tooth restorations where one or more of the patients teeth have fallen out it is possible to operate one or more carry¬ ing metal pins, so-called implants, into the patient's jaw bone. These metal pins are embodied with a threaded hole and are tapering off at the upper end. These metal pins can ac¬ commodate a single male threaded tooth crown or a bridge, which can be of the shape of a beam supported in a simple manner or as a single or double corbelled beam, which must have the required bending strength and consequently be made of metal.
In the procedures known so far for the production of ceramic tooth restorations on implants it has been necessary to give the metal part a ceramic cladding. In implants which involve a bridge, the substructure with the belonging teeth are therefore made of metal onto which a glass ceramic is fired. In implants involving individual crowns have been used either metal or specially manufactures crowns of ceramic, which are not adapted to the individual patient.
In the procedure according to the invention it is possible to build up ceramic on a ceramic substructure, whereby tooth re¬ storations with a ceramic surface can be carried out both as single crowns and as bridges adapted to the individual patient and which have the required bending strength.
Fig. 6 shows an auxiliary tool for the production of an attachment element 16 of ceramic. As shown, the tool consists of two metal rods 6 and 7. The rod 6 is at one end embodied with a threaded section 8, then comes a cylindrical section 9, which ends with a shoulder 10 and following that there is a conical section 11. The rod 7, which corresponds to the metal pin which is operated into a patient ' s jaw bone, is shown embodied with a conical part 13 with a threaded hole 12 at one end. The conical part 13 ends in a shoulder 14.
When the tool is to be used the rods 6 and 7 are joined as shown in fig. 7 by screwing the threaded part 8 into the threaded hole 12. Thereafter separation material 3 is applied to the surfaces 9,11 and 13, whereafter - as shown in fig. 8 - sub¬ structure material 4 is applied with a desired shape. When dried as described above the substructure material can be re¬ moved as an independent unit 16, which is heat treated. Thereafter it is possible as shown in fig. 10 to firmly screw on an attachment element 16 on each implant 15 whereafter, as shown in fig. 11, a substructure 17 is built up consisting of a slurry of substructure material as described above between the individual attachment elements. The whole bridge can then be loosened from the master model and heat treated and coated with glass as described above.
When the crown is to be attached on inoperated metal pin this is done by means of a not shown screw, which at one end has a threaded section, a cylindrical section, a shoulder and a conical section corresponding to the parts 8,9,10 and 11, respectively, on the rod 7.
The shown and described embodiments are only examples. It is possible within the framework of the embodiment to imagine other embodiments and applications, for example special tools for the production of other shapes of bridges.

Claims

P A T E N T C L A I M S
1. Procedure for the production of ceramic tooth restorations by the use of a master model (1) of plaster, and which com¬ prises a substructure of aluminium oxide and an infiltration material of glass and several layers of glass ceramic c h a- r a c t e r i z e d by the fact that the master model (1) is first given a layer of distance material (2), preferably wax, and thereafter given a layer of separation material (3), to seal the surface of the master model, whereafter a substruc¬ ture material (4) is applied, which contains oxide ceramic, demineralised water, a coagulant and a bonding agent with a composition so that the mixture after stirring, preferably in an ultra sound bath, can be modelled, whereafter the master model (1) with the applied material is dried, and the sub¬ structure (4) is removed from the master model (1), where- after the substructure (4) is heat treated and thereafter cooled, whereafter it is given a supra structure consisting of a layer of glass, and then heat treated again whereby an infiltration of glass occurs in the substructure material.
2. Procedure according to claim 1 c h a r a c t e r i z e d by the fact that the master model (1) with the substructure material (4) applied is dried for one minute at approx. 80°C and thereafter cooled, whereafter the substructure is removed from the master model.
3. Procedure according to claims 1 and 2 c h a r a c t e r - i z e d by the fact that the heat treatment of the sub¬ structure (4) is effected first by heating the substructure to approx. 500°C for at most 10 minutes, whereby the bonding agent is removed, and thereafter by heating the substructure to 1120°C for 2 hours in a special chamber, whereby the material is sintered, and then cooled.
4. Procedure according to claims 1-3 c h a r a c t e r ¬ i z e d by the fact that the substructure (4) after being cooled is checked on the master model (1) and then given a layer of glass and then heated to 1100°C for 2-4 hours.
5. The separation material to be used in the procedure ac¬ cording to claim 1 c h a r a c t e r i z e d by the fact that the separation material (2) consists of fully combust¬ ible plasticine and chloroform with a mixing ratio so that the material is applicable with a brush at about 22°C, but hardens at about 20°C.
6. Separation material according to claim 5, c h a r a c - t e r i z e d by the fact that the separation material (2) contains plasticine and chloroform in a mixing ratio of 6 g of plasticine to 30 ml of chloroform.
7. Substructure material for application in the procedure ac¬ cording to claim 1, c h a r a c t e r i z e d by the fact that the substructure material (4) consists of demineralised water, cellulose powder, sugar and oxide ceramic, which after stirring is stored in airtight containment.
8. Substructure material according to claim 7, c h a r a c ¬ t e r i z e d by the fact that the substructure material (4) is produced by first making up a liquid, with a mixing ratio of 75 ml of demineralised water to which is added 0*5 g of cellulose derivative and stirred for approx. one minute, where after the mixture is passed through a chemical paper filter and added 5 g of sugar, and that 1*32 ml of this liquid is mixed with 10 g oxide ceramic.
9. Substructure material according to claim 7, c h a r a c ¬ t e r i z e d by the fact that aluminium oxide is used as oxide ceramic.
10. Substructure material according to claim 7, c h a r a c- t e r i z e d by the fact that zirconium oxide is used as oxide ceramic.
11. Substructure material according to claim 7, c h a r a c¬ t e r i z e d by the fact that magnesium oxide is used as oxide ceramic.
12. Substructure material according to claims 9-11, c h a ¬ r a c t e r i z e d by the fact that a mixture of aluminium oxide and zirconium oxide, of magnesium oxide and zirconium oxide, or of aluminium oxide and magnesium oxide.
EP95918553A 1994-06-20 1995-05-18 Procedure for the production of ceramic tooth restorations and materials for distance, separation and substructure for the carrying out of the procedure Withdrawn EP0794740A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK721/94 1994-06-20
DK072194A DK72194A (en) 1994-06-20 1994-06-20 Process for the preparation of ceramic tooth restorations and distance, separation and substructure material for carrying out the method
PCT/DK1995/000197 WO1995035070A1 (en) 1994-06-20 1995-05-18 Procedure for the production of ceramic tooth restorations and materials for distance, separation and substructure for the carrying out of the procedure

Publications (1)

Publication Number Publication Date
EP0794740A1 true EP0794740A1 (en) 1997-09-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP95918553A Withdrawn EP0794740A1 (en) 1994-06-20 1995-05-18 Procedure for the production of ceramic tooth restorations and materials for distance, separation and substructure for the carrying out of the procedure

Country Status (4)

Country Link
EP (1) EP0794740A1 (en)
AU (1) AU2446195A (en)
DK (1) DK72194A (en)
WO (1) WO1995035070A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1248657C (en) * 1998-01-16 2006-04-05 斯特凡·沃尔茨 Method and apparatus for manufacturing all-ceramic dental components
AU6393598A (en) * 1998-03-27 1999-11-01 Dirk Leonhardt Method for the fabrication of tooth restaurations in the form of all ceramic bridges and material for carrying out the method
SE525787C2 (en) * 2003-09-24 2005-04-26 Nobel Biocare Ab Procedure and apparatus for dental installation
US20050164045A1 (en) 2004-01-27 2005-07-28 Ivoclar Vivadent Ag Method for the production of an oxide ceramic shaped part and a part produced by such method
EP2263991A1 (en) 2009-06-19 2010-12-22 Nobel Biocare Services AG Dental application coating
CN113416071A (en) * 2021-06-24 2021-09-21 嘉兴学院 Raw material and additive manufacturing method of colorful multi-transparency dental prosthesis

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA807108B (en) * 1979-12-14 1981-11-25 Coors Porcelain Co Dental appliance and method of manufacture
SE8804588D0 (en) * 1988-12-20 1988-12-20 Sandvik Ab ARTIFICIAL DENTAL CHRONICLE
SE464908B (en) * 1989-03-23 1991-07-01 Nobelpharma Ab METHOD FOR MANUFACTURING ARTIFICIAL DENTAL CHRONICLES OF ONLINE TYPE OR INPUT
NL9001516A (en) * 1990-07-03 1992-02-03 Elephant Edelmetaal Bv METHOD FOR MANUFACTURING A SUBSTRUCTURE FOR A DENTAL RESTORATION, SUCH AS A CROWN OR BRIDGE, AND METHOD FOR MANUFACTURING SUCH DENTAL RESTORATION

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9535070A1 *

Also Published As

Publication number Publication date
DK72194A (en) 1995-12-21
WO1995035070A1 (en) 1995-12-28
AU2446195A (en) 1996-01-15

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