WO1999023973A1 - Method, arrangement and use of spacers for implants - Google Patents
Method, arrangement and use of spacers for implants Download PDFInfo
- Publication number
- WO1999023973A1 WO1999023973A1 PCT/SE1998/001976 SE9801976W WO9923973A1 WO 1999023973 A1 WO1999023973 A1 WO 1999023973A1 SE 9801976 W SE9801976 W SE 9801976W WO 9923973 A1 WO9923973 A1 WO 9923973A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spacers
- powder
- units
- shapes
- tools
- Prior art date
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
- A61C13/0004—Computer-assisted sizing or machining of dental prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0001—Impression means for implants, e.g. impression coping
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
- A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
Definitions
- the present invention relates to a method for making available a selection of spacers which are intended to be applied on or near finished and generally standardized implant surfaces in the jaw/dentine.
- the spacers are distinguished by small external dimensions.
- BRANEMARK "Standard Abutment System” which is sold on the open market, including ESTHETI CONE, MIRUS CONE and CERA CONE.
- the diameters in these cases can be of the order of 4 - 5 mm.
- the invention also relates to a method for producing different types of spacers which can be applied on implants with finished and generally standardized attachment surfaces in the dentine of one or more patients.
- One or more test arrangements for the different shapes and/or material compositions of the spacers are in this case arranged at a test location, for example at a dentist's surgery, at a hospital, at a dental technician's, etc.
- the invention also relates to an arrangement for ordering, from a test location of the type mentioned, a selection of spacers which can be applied on implant surfaces on the dentine of one or more patients.
- the test location can in this case comprise one or more test arrangements for the design, assembly and/or material composition of the spacers.
- the test location can have members for collating the test results and sending these to a production site. They are sent preferably via the telecommunications and/or computer network (which can include the Internet) .
- the invention also relates to an arrangement for producing spacers included in a selection of spacers which are applied on or near the said implant surfaces of one or more patients. There are different requirements placed on the spacers from the point of view of strength and aesthetics, etc.
- the invention also relates to an arrangement for a selection of spacers which are intended to be applied to implant surfaces in the said dentine.
- the invention also concerns the use of units which consist of powder compositions or powder preparations that can be compressed by means of high pressure and that comprise titanium or metal particles, ceramic particles, plastic particles and/or alloy particles.
- spacers It is already known to make spacers from metal blanks which are worked (milled) mechanically, and a large number of spacers are available on the market and can be bought by the users (dentists, dental technicians, etc.) . Each user in this way procures a set of spacers which he/she uses in his/her daily work.
- the spacers can be made of alloys and metals, for example titanium, plastic and ceramics. It is known per se to make a spacer of the said type from powder particles of the said type that are compressed by high pressure. For example, spacers of compressed ceramic powder and plastic powder are already known.
- test location or ordering location with computerized testing arrangements in conjunction with which models, implant positionings, detection arrangements, etc.
- the computer equipment at the ordering location can be coupled to the production site's computer equipment, and ordering and query procedures, even interactive ones, can be realized.
- the invention also solves this problem and thus gives the dentist/dental technician the option of choosing to make up the spacer function from existing basic spacer elements or, on each occasion, to form the individually adapted spacer with the aid of his test arrangements. The invention solves this problem too.
- powder preparations are chosen from among a number of possible powder preparations consisting of or comprising titanium or metal powder, ceramic powder, plastic powder and/or alloy powder.
- the chosen powder preparations are placed in tools with mould cavities for units forming semi-finished products.
- the tools In a third stage, the tools, with their powder-filled mould cavities, are placed in one or more high-pressure- generating arrangements in which the powders in the said cavities are compressed so that units with solid consistencies (mechanically workable) are formed when the tools are separated after the compression stage has been carried out.
- the units In a fourth stage, the units are mechanically worked/milled/ground, etc., to give the final shapes of the spacers.
- a method for producing different types of spacers can principally be regarded as being characterized by the fact that units forming semi-flnished products based on the different shapes of the spacers are ordered from a production site serving several test locations.
- the production site has the powder preparations (powder compositions) ordered or designated by the respective test location and consisting of titanium or metal powder, ceramic powder, plastic powder and/or alloy powder.
- Tools with mould cavities having the shapes of the units are placed m one or more high-pressure- generatmg arrangements which, in the activated state, compress tne powders m the mould cavities and permit semi-fmished product units with solid consistencies (i.e. they can be mechanically worked) when the tools are removed from the arrangement or arrangements and opened.
- the semi-fmished product units are then worked mechanically/milled in machining equipment (for example milling equipment) .
- the machining equipment can be located, for example, at the production site and/or at the test location in question.
- the semi-fmished product units are given the final shape of the spacers.
- the spacers are thus formed from compressed powder preparations.
- sintering is included as a subsidiary stage in the method.
- An arrangement for ordering spacers included in a section is essentially characterized in that the production site has powder compositions meeting the requirements which are placed on the spacers in the different dental situations, mainly with regard to strength and/or aesthetics. Further characteristics are that the production site has tool sets and/or production means for tools with mould cavities which correspond to units which form semi-fmished products based on the final or desired shapes of the spacers.
- the production also has an arrangement or arrangements which operate at high pressure and which are intended to receive the said tools with powder-filled cavities and to subject the powders to such high pressures that units with solid consistencies (mechanically workable) can be formed after the application of the pressure and the separation of the tools.
- machining equipment which can be situated at the production site or at some other location and which is arranged to mechanically work the semi-fmished product units to give the final shapes of the spacers.
- An example of the said machining equipment that may be mentioned here is tie PROCERA type.
- the semi-fmished product units can be subjected to heat treatment m an intermediate stage .
- An arrangement for production of spacers included in a selection of spacers can principally be regarded as being characterized in that a number of high-pressure- generating arrangements are arranged to accommodate their respective powder preparation (powder composition) from among powder compositions which consist of metal or titanium powder, ceramic powder, piastic powder and alloy powder.
- the receiving members are arranged to receive information concerning the powder compositions or powder preparations and the snapes of units forming semi-f ished products based on the shapes of the spacers.
- the members are arranged to ⁇ esignate or choose the powder compositions as a function of the received information, and to designate or indicate tools with mould cavities corresponding to tne shapes of the units.
- Machining equipment is also arranged to mechanically work the units to give the final shapes of the spacers after the tools with their powder-filled mould cavities have been subjected to the said high pressure and have been separated. Arrangements (ovens) for sintering can also be included (metal products).
- An arrangement for a selection of spacers is essentially characterized in that the greater part of the spacer selection consists of spacers with through- holes for screws which secure the spacers to the implants.
- the spacers further consist of powder particles of titanium, ceramic, plastic and/or alloys which have been compressed by high pressure.
- the spacers are arranged with shapes which permit production by means of divisible tools.
- units which consist of powder preparations that can be compressed by means of high pressure is essentially characterized in that the units are used as mechanically workable (for example millable) semifinished products with shapes which are based on spacers for application to implant surfaces in the jaw/jaws/dentine of one or more patients.
- units which consist of powder compositions that can be compressed by means of high pressure can essentially be characterized in that the units, after mechanical working/milling/grinding, are used to form selections of spacers intended for application to (generally standardized) implant surfaces in the jaw/jaws/dentine of one or more patients.
- Figures 1 to 11 show, in side views, different types of spacers which are dealt with m the given context
- Figure 2 shows, in a block diagram, the different production stages for the selection of spacers which can be used for attachments to implant surfaces in dentine
- Figure 3 shows, in a block diagram, an arrangement for production of a selection of spacers
- Figure 4 shows, in vertical section, a type of spacer produced using the methods and arrangements indicated in Figures 2 and 3, and
- Figure 5 shows, in a perspective view, the attachment surfaces of implants in the dentine of two patients.
- Figures 1 to 11 show examples of spacers and accessories which can be produced in accordance with the methods and arrangements which are described below. Concerning the types of spacers and the types of accessories, reference may be made, inter alia, to the BRANEMARK system mentioned above.
- the spacers can be present in various basic designs whose measurements can be varied.
- Figure 1 shows a spacer with an essentially cylindrical shape 1 which has a conical part 2 at the bottom.
- the cylindrical part has a height H and the conical part 2 has a height h.
- the spacer additionally has a diameter D.
- the diameter can be of the order of 4 - 5 mm, for example 4.5 mm.
- the heights H and h can be varied, and in the case shown the height H is about 6 mm and the height h 1 mm.
- Figure la shows another embodiment in which the diameter is indicated by D' and the height of a cone-shaped part is indicated by H' .
- the diameter D' can have a value of 4.5 mm. Since the spacers and accessories are very well known per se, they will not be described in detail here.
- reference numbers 3, 4, 5 and 6 indicate different powder preparations (here also called powder compositions).
- a mechanism for choosing the powder preparations for the dental spacers in question which are relevant to the different dental situations is indicated by 7 and arrows 8, 9, 10 and 11.
- the powder preparations consist of titanium or metal powder 3, ceramic powder 4, plastic powder 5 and alloy powder 6.
- the powder preparations are to be assigned to tools 12, 13, 14 and 15 with different mould cavities 12a, 13a, 14a and 15a.
- the tools are produced or designated from a stock by means of a function symbolized by arrow groups 17, 18, 19 and 20.
- Each arrow group comprises a number of alternative options which are indicated by 17a, 17b, 17c and 17d.
- Corresponding alternative options exist for the other arrow groups 18, 19 and 20.
- each powder preparation 3, 4, 5, 6 can be assigned different or desired shapes 12a, 13a, 14a, 15a, i.e. a shape/a spacer blank can be designed with any chosen powder composition.
- the mould cavities 12a, 13a, 14a, 15a of the tools are thus filled with the powder in question from the chosen powder preparations .
- Each tool can be placed in high- pressure-generating arrangements 21, 22, 23 which are provided with spaces 21a, 22a, 23a in which a number of tools can be placed for powder compression.
- the high- pressure-generating arrangements are known per se and can operate according to principles which are known per se.
- the arrangements 21, 22 and 23 can generate pressures of between 1000 and 10000 bar.
- the different arrangements can be assigned different powder preparations, can operate at different pressures, etc.
- a number of tools 24, 25 and 26 are fitted in the spaces 21a, 22a and 23a.
- the mechanism for choosing which tool is placed in the spaces 21a, 22a and 23a is symbolized by arrow groups 27, 28, 29 and 30. Each arrow group has a choice mechanism which is symbolized by 27a, 27b and 27c.
- the actual compression procedure is well known per se and takes place in a manner known per se.
- the respective tool is removed and opened so that the parts 24a and 24b of the tool permit release of the compressed unit 31.
- the shape of the unit 31 is based on the basic design of the spacer in question.
- the compression is in this case of such an order that the unit 31 has a solid consistency, so that it can be mechanically worked (milled or ground, etc.) in a manner known per se.
- the units from the other tools in the other pressure ovens are symbolized by 32 and 33. It should be noted here that titanium and metal powders require considerably higher compression pressures, in order to be able to form a mechanically workable unit, compared to the formation of corresponding solid consistencies for units made of ceramic or plastic powder.
- the compression pressure for titanium or metal powder lies in the upper region of the stated pressure range.
- the compression pressure for plastic powder particles lies in the lower region of the stated range for the compression pressure.
- the units of different compressed powder preparations which have thus been released can thereafter be worked in machining equipment 36, 37 and 38.
- machining equipment 36, 37 and 38 For example, in the case of powder preparations comprising metal or titanium powder, the main type of machining takes the form of mechanical milling.
- the ceramic units are worked, for example, by grinding.
- the plastic units can be mechanically worked/milled, and this also applies to the alloy powder compositions.
- Ovens 36a, 37a and 38a can be integrated in the machining equipment or used separately.
- the ovens can operate at temperatures of 1600 - 1800°C.
- the semi-finished products are sintered/ homogenized/heat-treated in the said ovens. It should be noted here that not all types of semi-finished products need to be sintered. In sintering, pressure resistance levels of 900 MPa and densities of 91% can be achieved in the metal material according to the above. Arrangements and systems for designating the ovens as a function of the actual products, temperatures, material choice, etc., can be provided in the same way as described above. Known sintering methods can be used.
- the machining equipment 36, 37 and 38 is specialized for each respective function and thus, for example, the equipment 36 can consist of milling equipment, the equipment 37 can consist of grinding equipment, and the equipment 38 can consist of another type of machining equipment.
- the machining equipment stations 36, 37 and 38 can also be divided up in other ways.
- the machining equipment 36 can execute all the treatment of units with powder compositions consisting of titanium or metal powder
- the machining equipment can execute all the treatment of units made of ceramic powder, etc.
- the options for choosing the different treatments of the units are symbolized by arrow groups 39, 40 and 41. Each arrow group in this case has its own different options 39a, 39b and 39c.
- the treatment or the machining in the machining equipment 36, 37 and 38 results in finished spacers 42, 43 and 44 which thus consist of compressed powder particles of the chosen material in accordance with the above.
- FIG 3 shows a number of testing or treatment locations 45, 46 and 47.
- Each location can be more or less advanced and, for example, can be provided with computer-assisted testing and detection equipment 48.
- the said computer equipment can be coupled by means of a modem 48a to a telecommunications or computer network 49, which can consist of the public telecommunications or computer network. This can also include the Internet.
- the testing or treatment location can be more or less advanced also with respect to the ordered product.
- the units 31, 32 and 33 consist of semi-finished products which are to be worked in the machining equipment 36, 37 and 38 (see Figure 2) for obtaining the final product, i.e. the spacer 42, 43 or 44.
- the testing or treatment location can in this case order a finished spacer or a unit which constitutes a semi-finished product for the spacer.
- the testing location can in this case have access to its own machining equipment station 50.
- the said testing or treatment location 45, 46 and 47 is served by a production site 51 for spacers and/or units (i.e. semi-finished products).
- the production site 51 can be provided with its own computer equipment 52, to which the computer equipment 48 of the said testing or treatment location can be coupled.
- Order and inquiry forms can be sent from the testing or treatment locations and are received and answered from the production site in a manner known per se.
- the production site can in this case comprise the said powder preparations 53, tools 54 and machining or treatment equipment 55.
- the said high- pressure-generating arrangements 56 can also be included.
- heat treatment ovens 56a can also be arranged m connection with or separate from the pressure-generating members 56.
- Order or inquiry information ii is thus sent out from the respective testing or treatment location and is received in receiving members 57 at the production site.
- the receiving members 57 initiate the mechanisms for choosing the powder preparations and the tools in accordance with the above.
- the powder preparations are chosen with information ⁇ 2' and the tools are chosen with information ⁇ 2''.
- the cnoice of high-pressure-generat g arrangement or arrangements is initiated with 2''', and the choice of the machining equipment with information ⁇ 2''''.
- the information ⁇ 2 is thus divided into or comprises the information items ⁇ 2' - ⁇ 2''''.
- the product made at the production site will result in a unit/semi-f ished product or a finished spacer.
- the finished spacer or unit is supplied in a manner known per se to the testing or treatment location question .
- the respective spacer or unit can consist of a powder compression of the type .-ndicate ⁇ above.
- the configuration is also preferably such that the production can take place using a divisible tool 59 with tool parts 59a and 59b which can oe separated in order to release the compressed unit 60.
- the unit or spacer is preferably of the type which has a through-opening 61 for securing the finished spacer the implant m question.
- the finished spacers are to be applied in implants 62 or 63 in the dentine 64, 65 of one or more patients.
- the finished spacers will in this case be applied via attachment surfaces 62a, 63a which are preferably of a standardized type.
- a characteristic feature of the invention is that the entire selection of spacers can be produced by means of the technique described above, irrespective of whether the powder composition consists of titanium, ceramic, plastic or alloy.
- One use of units made of powder compositions which can be compressed by means of high pressure is that the units are used as mechanically workable, for example millable, semi-finished products with shapes which are based on the final shapes of the spacers.. After the mechanical working, for example milling, grinding, etc., the units are used to form the said selection of spacers.
- the uses can also be characterized by the fact that it is heat-treated products which are to be worked.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98953130A EP1030624A1 (en) | 1997-11-11 | 1998-10-30 | Method, arrangement and use of spacers for implants |
AU10581/99A AU746390B2 (en) | 1997-11-11 | 1998-10-30 | Method, arrangement and use of spacers for implants |
CA002309700A CA2309700A1 (en) | 1997-11-11 | 1998-10-30 | Method, arrangement and use of spacers for implants |
JP2000520074A JP2001522638A (en) | 1997-11-11 | 1998-10-30 | Methods, apparatus and uses of spacers for implants |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9704114-9 | 1997-11-11 | ||
SE9704114A SE510955C2 (en) | 1997-11-11 | 1997-11-11 | Method, device and use at implant distances |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999023973A1 true WO1999023973A1 (en) | 1999-05-20 |
Family
ID=20408929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1998/001976 WO1999023973A1 (en) | 1997-11-11 | 1998-10-30 | Method, arrangement and use of spacers for implants |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1030624A1 (en) |
JP (1) | JP2001522638A (en) |
AU (1) | AU746390B2 (en) |
CA (1) | CA2309700A1 (en) |
SE (1) | SE510955C2 (en) |
WO (1) | WO1999023973A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003525077A (en) * | 1999-12-29 | 2003-08-26 | オルムコ コーポレイション | Method and apparatus for forming custom orthodontic appliance |
US10011050B2 (en) | 2011-10-12 | 2018-07-03 | Ormco Corporation | Fabrication of an orthodontic aligner from a negative mold designed by a computational device |
US10383704B2 (en) | 2011-10-12 | 2019-08-20 | Ormco Corporation | Direct manufacture of orthodontic aligner appliance |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5571876B2 (en) * | 2008-04-09 | 2014-08-13 | 康 中島 | Dental implant |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995015731A1 (en) * | 1993-12-06 | 1995-06-15 | Nobelpharma Ab | Method and arrangement for collecting data for production of artificial support members or replacement parts for the human body |
WO1997027818A1 (en) * | 1996-01-31 | 1997-08-07 | Dominique Choplin | Method for making dental prostheses |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60186455A (en) * | 1984-03-06 | 1985-09-21 | 株式会社ニコン | Apatite composite ceramics |
DE3531017A1 (en) * | 1985-08-30 | 1987-03-12 | Nowack Norbert Prof Dr Ing | Direct preparation of dental alloy castings from metal powder mixtures |
SE501333C2 (en) * | 1993-05-27 | 1995-01-16 | Sandvik Ab | Method for making ceramic tooth restorations |
-
1997
- 1997-11-11 SE SE9704114A patent/SE510955C2/en not_active IP Right Cessation
-
1998
- 1998-10-30 CA CA002309700A patent/CA2309700A1/en not_active Abandoned
- 1998-10-30 WO PCT/SE1998/001976 patent/WO1999023973A1/en active IP Right Grant
- 1998-10-30 AU AU10581/99A patent/AU746390B2/en not_active Ceased
- 1998-10-30 JP JP2000520074A patent/JP2001522638A/en active Pending
- 1998-10-30 EP EP98953130A patent/EP1030624A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995015731A1 (en) * | 1993-12-06 | 1995-06-15 | Nobelpharma Ab | Method and arrangement for collecting data for production of artificial support members or replacement parts for the human body |
WO1997027818A1 (en) * | 1996-01-31 | 1997-08-07 | Dominique Choplin | Method for making dental prostheses |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9622834B2 (en) | 1995-06-02 | 2017-04-18 | Ormco Corporation | Custom orthodontic appliance forming method and apparatus |
JP2003525077A (en) * | 1999-12-29 | 2003-08-26 | オルムコ コーポレイション | Method and apparatus for forming custom orthodontic appliance |
US8992215B2 (en) | 1999-12-29 | 2015-03-31 | Ormco Corporation | Custom orthodontic appliance forming method and apparatus |
US10011050B2 (en) | 2011-10-12 | 2018-07-03 | Ormco Corporation | Fabrication of an orthodontic aligner from a negative mold designed by a computational device |
US10383704B2 (en) | 2011-10-12 | 2019-08-20 | Ormco Corporation | Direct manufacture of orthodontic aligner appliance |
Also Published As
Publication number | Publication date |
---|---|
CA2309700A1 (en) | 1999-05-20 |
SE510955C2 (en) | 1999-07-12 |
AU1058199A (en) | 1999-05-31 |
EP1030624A1 (en) | 2000-08-30 |
SE9704114D0 (en) | 1997-11-11 |
JP2001522638A (en) | 2001-11-20 |
SE9704114L (en) | 1999-05-12 |
AU746390B2 (en) | 2002-05-02 |
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