US20050260377A1 - Ceramic or composite blank - Google Patents
Ceramic or composite blank Download PDFInfo
- Publication number
- US20050260377A1 US20050260377A1 US11/120,375 US12037505A US2005260377A1 US 20050260377 A1 US20050260377 A1 US 20050260377A1 US 12037505 A US12037505 A US 12037505A US 2005260377 A1 US2005260377 A1 US 2005260377A1
- Authority
- US
- United States
- Prior art keywords
- blank
- accordance
- ceramic
- magnetic
- composite blank
- 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
Links
Images
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
- A61C13/0022—Blanks or green, unfinished dental restoration parts
-
- 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
- A61C13/0004—Computer-assisted sizing or machining of dental prostheses
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/22—Nonparticulate element embedded or inlaid in substrate and visible
Definitions
- a rotatable blank is clamped into a machine tool for processing the blank by removing material (EP 160 797 B1).
- the blanks are provided with an integrated holder that enables the clamping.
- Such holders are described in e.g. DE 44 36 231 A1, WO 0245614, EP 455 854 B1 or EP 982 009 A2.
- the holders are generally discarded after use, thus wasting the ceramic or composite materials that are relatively expensive and also require complex manufacturing processes; this results in higher costs.
- the invention concerns ceramic or composite blanks with at least one magnetic or magnetizable part mounted on it sideways.
- This part corresponds to the contours of at least one magnet in the clamping chuck of the machine.
- a flat form fit will suffice.
- this can also be a structured fit that provides additional footing.
- two opposite recesses are provided on the blank, into which e.g. an iron part or a steel part is inserted such that it fits accurately.
- the part only needs to be fixed in such a way that it does not get lost during use. Once it is clamped, it is retained in its position by pressure.
- the milling machine has a magnetic device, usually a plate on which the metal part of the blank is mounted.
- FIG. 1 is a sketch of a cylindrical blank 1 ; wherein the magnetic part 2 is arranged in the clamping axis.
- FIG. 2 illustrates a similar blank with a structured part 2 .
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)
- Jigs For Machine Tools (AREA)
- Dental Prosthetics (AREA)
Abstract
A ceramic or composite blank for the purpose of attaching it to at least one magnet in the clamping chuck of a machine for material-removing processing, supporting a magnetic or magnetizable part on at least one of its two opposite sides.
Description
- The fabrication of dental prostheses by means of CAD/CAM (computer-aided design/computer-aided manufacturing) processes has increasingly widespread use. There are a series of processes using computer-aided design/computer-aided manufacturing of dental prostheses, e.g. the milling of ceramic blanks according to 3D data sets (EP 904 743, DE 198 38 238 A1, DE 101 07 451A1, CEREC® system by Sirona Dental Systems, PROCERA® system from Degussa, LAVA® system manufactured by 3M Espe). Instead of ceramic blanks, millable composite blocks (consisting of polymer(s) and inorganic and/or organic fillers) can also be used as blanks.
- In these milling processes, usually a rotatable blank is clamped into a machine tool for processing the blank by removing material (EP 160 797 B1). For this purpose, the blanks are provided with an integrated holder that enables the clamping. Such holders are described in e.g. DE 44 36 231 A1, WO 0245614, EP 455 854 B1 or EP 982 009 A2. The holders are generally discarded after use, thus wasting the ceramic or composite materials that are relatively expensive and also require complex manufacturing processes; this results in higher costs.
- The process that has now been developed provides a surprisingly simple solution to this problem.
- The invention concerns ceramic or composite blanks with at least one magnetic or magnetizable part mounted on it sideways. This part corresponds to the contours of at least one magnet in the clamping chuck of the machine. For the magnetic or magnetizable part and the magnet of the clamping chuck usually a flat form fit will suffice. However, this can also be a structured fit that provides additional footing. Preferably two opposite recesses are provided on the blank, into which e.g. an iron part or a steel part is inserted such that it fits accurately. The part only needs to be fixed in such a way that it does not get lost during use. Once it is clamped, it is retained in its position by pressure. For the purpose of clamping, the milling machine has a magnetic device, usually a plate on which the metal part of the blank is mounted.
-
FIG. 1 is a sketch of acylindrical blank 1; wherein themagnetic part 2 is arranged in the clamping axis.FIG. 2 illustrates a similar blank with astructured part 2.
Claims (7)
1. Ceramic or composite blank having two opposite sides, said blank comprising a magnetic or magnetizable part supported on at least one of said two opposite sides.
2. Blank in accordance with claim 1 , wherein the part is embedded at least partly in the blank.
3. Blank in accordance with claim 1 , wherein the part is a cylinder or a cuboid block.
4. Blank in accordance with claim 1 , wherein the part is made of iron or steel.
5. Blank in accordance with claim 1 , wherein the part is flat on a side facing the clamping chuck.
6. Blank in accordance with claim 1 , wherein the part is structured on a side facing the clamping chuck.
7. A method of preparing a dental prosthesis comprising:
a) providing a blank in accordance with claim 1;
b) mounting the blank by the magnetic or magnetizable part into a milling machine; and
c) processing the blank to form a dental prosthesis.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10200422764.0 | 2004-05-05 | ||
DE102004022764A DE102004022764A1 (en) | 2004-05-05 | 2004-05-05 | Ceramic or composite blank |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050260377A1 true US20050260377A1 (en) | 2005-11-24 |
Family
ID=34934894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/120,375 Abandoned US20050260377A1 (en) | 2004-05-05 | 2005-05-03 | Ceramic or composite blank |
Country Status (3)
Country | Link |
---|---|
US (1) | US20050260377A1 (en) |
EP (1) | EP1593353A1 (en) |
DE (1) | DE102004022764A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011137263A1 (en) * | 2010-04-29 | 2011-11-03 | Turning Solutions, Inc. | Methods, systems and apparatuses for producing products from blanks |
US20140343707A1 (en) * | 2011-11-25 | 2014-11-20 | Invibio Limited | Prosthodontic device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1338132A (en) * | 1917-10-22 | 1920-04-27 | Sumitomo Chukosho Ltd | Magnet-steel |
US2821759A (en) * | 1952-12-17 | 1958-02-04 | Philips Corp | Method of manufacturing permanent magnets from an iron-base alloy containing ni, al, and co as principal elements |
US5280208A (en) * | 1991-08-19 | 1994-01-18 | Sumitomo Electric Industries, Ltd. | Composite bearing structure |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3140464A1 (en) * | 1981-10-12 | 1983-04-21 | Heinz 7070 Schwäbisch Gmünd Hampel | Mounting equipped with a permanent magnet, in particular for dental models |
DE3934016A1 (en) * | 1988-10-13 | 1990-04-19 | Wilfried Aichhorn | Denture welding fixture - with two mounting tables adjustable by a micrometer screw |
EP0501983B1 (en) * | 1989-11-20 | 1994-12-28 | BECKER, Wolfgang | Process for making a dental prosthesis |
DE9310798U1 (en) * | 1993-07-19 | 1993-09-23 | Kuhn, Thorsten, 42115 Wuppertal | FRAESSUPPORT |
DE19916148C1 (en) * | 1999-04-10 | 2000-10-19 | Willi Foldenauer | Universal holder for precisely fitting work equipment |
WO2001032093A1 (en) * | 1999-11-02 | 2001-05-10 | Jeneric/Pentron Incorporated | Cad/cam blocks in the manufacture of dental materials |
EP1280474A1 (en) * | 2000-05-09 | 2003-02-05 | 3M Innovative Properties Company | Dental models and methods of fixturing the same |
-
2004
- 2004-05-05 DE DE102004022764A patent/DE102004022764A1/en not_active Withdrawn
-
2005
- 2005-04-08 EP EP05007710A patent/EP1593353A1/en not_active Withdrawn
- 2005-05-03 US US11/120,375 patent/US20050260377A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1338132A (en) * | 1917-10-22 | 1920-04-27 | Sumitomo Chukosho Ltd | Magnet-steel |
US2821759A (en) * | 1952-12-17 | 1958-02-04 | Philips Corp | Method of manufacturing permanent magnets from an iron-base alloy containing ni, al, and co as principal elements |
US5280208A (en) * | 1991-08-19 | 1994-01-18 | Sumitomo Electric Industries, Ltd. | Composite bearing structure |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011137263A1 (en) * | 2010-04-29 | 2011-11-03 | Turning Solutions, Inc. | Methods, systems and apparatuses for producing products from blanks |
US20140343707A1 (en) * | 2011-11-25 | 2014-11-20 | Invibio Limited | Prosthodontic device |
US9629697B2 (en) * | 2011-11-25 | 2017-04-25 | Invibio Limited | Prosthodontic device |
Also Published As
Publication number | Publication date |
---|---|
EP1593353A1 (en) | 2005-11-09 |
DE102004022764A1 (en) | 2005-12-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HERAEUS KULZER GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BRAMER, WULF;REEL/FRAME:016603/0743 Effective date: 20050701 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |