WO1990009766A1 - Teleskopkrone - Google Patents
Teleskopkrone Download PDFInfo
- Publication number
- WO1990009766A1 WO1990009766A1 PCT/DE1990/000078 DE9000078W WO9009766A1 WO 1990009766 A1 WO1990009766 A1 WO 1990009766A1 DE 9000078 W DE9000078 W DE 9000078W WO 9009766 A1 WO9009766 A1 WO 9009766A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- crown
- recess
- retention part
- telescopic
- crown according
- 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.)
- Ceased
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
- A61C13/225—Fastening prostheses in the mouth
- A61C13/277—Telescopic anchoring, i.e. using spring biased detents
-
- 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
- A61C13/225—Fastening prostheses in the mouth
- A61C13/265—Sliding or snap attachments
- A61C13/2656—Snap attachments
-
- 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
- A61C13/225—Fastening prostheses in the mouth
- A61C13/275—Fastening prostheses in the mouth removably secured by using bridging bars or rails between residual teeth
-
- 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
-
- 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
- A61C5/73—Composite crowns
-
- 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
Definitions
- the invention relates to a telescopic crown, consisting of a primary crown that can be attached to a tooth stump and a secondary crown that can be pushed onto it, a spring-loaded retention part being held in the inner wall of the secondary crown, said retention part projecting over the wall towards the outer wall of the primary crown Snap into a recess of the same shape in the outer wall of the primary crown is inserted in the desired position.
- a telescopic crown consisting of a primary crown that can be attached to a tooth stump and a secondary crown that can be pushed onto it, a spring-loaded retention part being held in the inner wall of the secondary crown, said retention part projecting over the wall towards the outer wall of the primary crown Snap into a recess of the same shape in the outer wall of the primary crown is inserted in the desired position.
- Such telescopic crowns are used to fix dental prostheses, removable, partial dental prostheses being attached to telescopic crowns. Many dentists prefer the telescopic crown technique over all conventionally manufactured holding
- the secondary crown is usually pushed onto the primary crown with friction.
- the desired friction is not always achieved, and it is also known that after a certain amount Wear of the dental prosthesis reduces the friction of the telescopic crowns and an exact fit of the prosthesis is no longer guaranteed.
- It is disadvantageous for the prosthesis wearer that even if the dental prosthesis is lifted slightly, food residues can slide under the prosthesis. Even when speaking or laughing, a movement of the prosthesis between the still standing natural teeth is a very unsettling situation for the prosthesis wearer.
- the conventional technology of the telescopic crowns is very complex with regard to production, because the exact friction can be determined by time-consuming, careful grinding or grinding.
- a generic prior art is known from DE 29 45 489 C2, in which a rubber-elastic ring or the like is inserted into a recess in the secondary crown wall, as a result of which a positive and non-positive connection is achieved between the primary crown and the secondary crown shall be.
- a telescopic crown of the type described in the preamble is also known from operational practice, with a spring-loaded in a cavity of the secondary crown. the web is held with a catch arranged at the free end of the cantilever arm.
- the object of the invention is to create a telescopic crown of the generic type which, with little effort, enables the prosthesis equipped with telescopic crowns to be seated securely and precisely, with the resilient retention being embedded. part in the material of the secondary crown is avoided.
- the invention proposes that the retention part is U-shaped, the base of which bears the catch at least approximately in the center and its legs protrude to the side facing away from the catch, and that the retention part is in a recess in the inner wall of the secondary crown is used, on the side walls of which the legs can be supported and the bottom of which is at a distance corresponding to the spring travel of the detent from the base of the retention part.
- the training enables the dental technician to place the secondary crown on the primary crown without friction, with the catch in the secondary crown only snapping into the locking recess of the same shape in the primary crown in the desired position, as a result of which the desired securing of the position is achieved perfectly.
- the secondary crown can be removed from the primary crown by overcoming the latching action to release the dental prosthesis by applying appropriate force.
- Secondary crown ensures the suspension effect to a sufficient extent, the resilient retention part springing back when the secondary crown is pushed onto the primary crown, so that the particularly hemispherical detent is pushed back until the desired position is reached, in which the detent in the ent speaking hemispherical recess of the primary crown can snap into place with at least partial relaxation of the spring force of the retention part.
- This locking process is connected with an audible "click" so that the user can also acoustically detect the correct seat.
- This arrangement also has the advantage that the retention part only has to be inserted into the recess in the secondary crowns, that is, it is not embedded in them.
- the resilient possibility of movement of the retention part is thus ensured without thereby the secondary crown or material areas of the secondary crown would be loaded. This prevents the secondary crown material from breaking out or being excessively loaded.
- the permanent function is ensured because the retention part is loaded only when the secondary crown is pushed over the primary crown or when the secondary crown is removed from the primary crown in the sense of deflection, while in the desired position the retention part is arranged almost or completely relaxed, so that permanent plastic deformation of the retention part can be excluded with certainty.
- the catch and the east recess are hemispherical. It is furthermore particularly preferred that the side walls of the recess are undercut and the legs are arranged under the undercut. In this way, the retention part is held in the corresponding recess of the secondary crown very securely and in the normal case in a non-detachable manner, the removal of the retention part remaining possible using a suitable tool.
- the cross-sectional shape of the recess is dovetail-shaped and the legs are inclined at the same angle.
- the catch of the retention part consists of metal. According to a further variant it is provided that the retention part consists of metal. It can also be provided that the retention part consists of plastic.
- the retention part has an integrally molded catch.
- a particularly preferred embodiment is seen in the fact that the recess receiving the retention part has a height of approximately 0.7 to 1.1 mm, the retention part can be inserted flush into the recess, the leg of which has a free length of approximately 0.3 have up to 0.5 mm and the notch protrudes by about 0.2 to 0.4 mm, in particular 0.3 mm.
- a particularly secure and wobble-free fit of the retention part in the corresponding recess is achieved in that the diverging legs of the retention part have a narrow edge running parallel to the base, their outer leg surfaces adjoining the edge edge have an angle of 50 ° to one another enclose, enclose their inner surfaces adjoining the marginal edges at a flat angle of in particular 140 ° and extend at a more acute angle of approximately 80 ° to the base.
- the width of the retention part is approximately 1.1 to 1.5 mm, in particular 1.3 mm. It is also advantageous that the recess for the retention part and the latching recess is formed in each case by a molded part of the same shape, made of completely combustible plastic, which is lost. It can preferably be provided that the molded part for forming the recess for the retention part is cuboid with an open cover surface, the narrow side surfaces for forming the undercut being convergent to the cover surface and the undercut shortly before connection to the longer one Side faces ends.
- the molded part for forming the latching recess is a rectangular plate with a central depression, with struts striving towards the top in particular at its short marginal edges
- Retaining webs are formed, which are connected to the plate in particular via predetermined breaking points. Exemplary embodiments of the invention are shown in the drawing and are described in more detail below. It shows:
- FIG. 1 shows a telescopic crown during the pushing together process
- 2 shows a detail in side view and in plan view
- 3 shows a further detail in a side view
- 4 shows the retention part of the telescopic crown in different load conditions
- Figure 5 seen a molded part in plan view and in cross section.
- Fig. 6 shows another molded part in plan view and
- the telescopic crown which is shown, for example, in FIG. 1, essentially consists of a primary crown 2 fastened on a ground tooth stump 1 and a secondary crown 3 that can be pushed onto it.
- the secondary crown 3 has an inner cavity for this purpose, which has little play the outer shape of the primary crown 2 is adapted.
- a resilient retention part 5 is held in the inner wall of the secondary crown 3, which is directed parallel to the push-on direction (shown by the arrow 4), which has a catch 6 projecting beyond the wall towards the outer wall of the primary crown 2 engages in a locking recess 7 of the same shape in the outer wall of the primary crown 2 and engages in a locking recess 7 of the same shape in the outer wall of the primary crown 2.
- the retention part springs in the direction transverse to arrow 4, as can be seen in FIG. 4 (see arrow 8).
- the notch 6 and the notch 7 are each hemispherical, the functional parts engaging in the desired position without play or almost without play.
- the retention part 5 is essentially U-shaped, the base 9 of which carries the catch 6 in the center. Its legs protrude on the side facing away from the catch 6.
- the retention part 5 is inserted into a corresponding recess in the inner wall of the secondary crown 3, on the side walls of which the Support leg 10, the bottom of which is at a distance corresponding to the spring travel of the catch 6 from the base 9 of the retention part 5, so that when the secondary crown 3 is pushed onto the primary crown 2, the catch can completely disappear in alignment with the inner wall of the secondary crown 3 , as can be seen from Figure 4.
- the side walls of the recess for receiving the retention part 5 are designed such that they engage under the undercut. In this way, the retention part is held securely in the recess.
- the cross-sectional shape of the recess is preferably dovetail-shaped, the legs 10 being inclined at the same angle.
- the retention part 5 together with the catch 6 is made in one piece from a suitable plastic.
- the basic structure of the recess 11 receiving the retention part 5 can be seen from the drawing figures 2, 4 and 6.
- the corresponding molded parts or functional parts are shown on a greatly enlarged scale in the drawing figures 5 to 7.
- the recess 11 receiving the retention part has, for example, a height of 0.7 mm and a width of 1.4 to 1.45 mm. According to FIG.
- the retention part 5 has a total height of 0.95 mm, the catch 6 being a hollow half ball is formed so that the desired spring action can be achieved not only via the legs 10 and the base 9, but also by an additional deformation of the hemisphere 6.
- the legs 10 protrude on the side facing away from the catch 6 by about 0.35 mm in the normal direction, the catch 6 projecting beyond the base by about 0.3 mm.
- the diverging legs 10 of the retention part 5 have a narrow edge 12 running parallel to the base 9, which is shown in the drawing figure 7 on an enlarged scale of 40: 1.
- the outer leg surfaces 13 adjoining the edge 12 form an angle of approximately 50 ° with one another.
- the recess 11 for the retention part 5 and the locking recess 7 is in each case formed by a contour-matched, lost molded part 15 or 16, which molded parts are shown in the drawing figures 5 and 6.
- the molded part 6 for forming the recess 11 for the retention part 5 is essentially cuboid formed with an open top surface, wherein the narrow side surfaces 17 are formed to converge toward the top surface to form the undercut. The undercut thus formed ends laterally shortly before the connection to the longer side surfaces 18.
- Shaped part 16 for forming the catch recess 7 for the catch 6 of the retention part 5 is formed by a rectangular plate with a central recess, as can be seen from FIG. 5. On the short edge edges of the plate protruding from the plate at right, protruding towards the top Haltetegege 19 are formed, which can be broken off at predetermined breaking points 20.
- the molded parts 15, 16 are modeled into the inner surface of the secondary crown 3 or the outer surface of the primary crown 2 and embedded together with the crown. The modeled material is removed by heat, and in addition the molded parts 15, 16, which consist of plastic which can be burned without residue, are completely removed. Metal is then poured into the mold, as a result of which the primary crown 2 and the secondary crown 3 are produced with the contours shown in FIG.
- These holding webs 19 of the molded part 16 are used so that this molded part can be modeled and arranged in the correct position with an auxiliary tool.
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)
- Dental Prosthetics (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4090310A DE4090310C1 (de) | 1989-02-28 | 1990-02-06 | Teleskopkrone |
| DE90DE9000078D DE4090310D2 (en) | 1989-02-28 | 1990-02-06 | Teleskopkrone |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8902345 | 1989-02-28 | ||
| DEG8902345.5U | 1989-02-28 | ||
| DEG8909755.6U | 1989-08-16 | ||
| DE8909755U DE8909755U1 (de) | 1989-02-28 | 1989-08-16 | Teleskopkrone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1990009766A1 true WO1990009766A1 (de) | 1990-09-07 |
Family
ID=25954423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE1990/000078 Ceased WO1990009766A1 (de) | 1989-02-28 | 1990-02-06 | Teleskopkrone |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU5026690A (de) |
| DE (3) | DE8909755U1 (de) |
| ES (1) | ES2040672A6 (de) |
| WO (1) | WO1990009766A1 (de) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0504665A1 (de) * | 1991-03-13 | 1992-09-23 | Adam Obersat | Verbindungselement für die Zahnprothetik |
| EP0490238B1 (de) * | 1990-12-12 | 1997-05-28 | FR- KONSTRUKTIONSELEMENTE FÜR ZAHNPROTHETIK GmbH & CO | Hilfsteil zum Sichern eines abnehmbaren Zahnprothesenteils an einem festsitzenden Zahnprothesenteil |
| DE19856204C2 (de) * | 1998-06-12 | 2000-08-17 | Si Tec Gmbh | Dental-Geschiebe |
| DE10036825A1 (de) * | 2000-07-28 | 2002-02-14 | Si Tec Gmbh | Steggeschiebe |
| WO2003032862A1 (en) | 2001-10-11 | 2003-04-24 | Alessandro Cattaneo | Connection for dental prostheses |
| US20120178052A1 (en) * | 2011-01-10 | 2012-07-12 | Lin Tai-Wu | Structure of artificial tooth |
| DE202012012437U1 (de) | 2012-12-27 | 2013-03-13 | Rainer Manfred Hettrich | Aktives/passives Friktions-/Retentionselement horizontal für teleskopierende Kronen, Stege oder feinmechenische Halteelemente in der Dentalprothetik |
| DE202012010333U1 (de) | 2012-10-30 | 2014-02-03 | Si-Tec Gmbh Dental-Spezialartikel | Vorrichtung zur lösbaren Festlegung von herausnehmbarem Zahnersatz an festsitzendem Zahnersatz |
| DE102012219804A1 (de) | 2012-10-30 | 2014-04-30 | Si-Tec Gmbh Dental-Spezialartikel | Vorrichtung zur lösbaren Festlegung von herausnehmbarem Zahnersatz an festsitzendem Zahnersatz |
| US11523888B2 (en) | 2016-10-07 | 2022-12-13 | 3M Innovative Properties Company | Ceramic dental restorations made by additive manufacturing |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2620364B2 (ja) * | 1988-03-18 | 1997-06-11 | 本田技研工業株式会社 | セラミックス焼結体の製造方法 |
| DE19627597C1 (de) * | 1996-07-09 | 1997-09-11 | Si Tec Gmbh | Vorrichtung zum Festlegen der Sekundärkrone einer Dental-Teleskopkrone an deren Primärkrone |
| DE19812178C1 (de) * | 1998-03-19 | 1999-08-12 | Si Tec Gmbh | Vorrichtung zum Erzeugen eines Reibschlusses für ein Dental-Attachment, Dental-Attachment mit einer derartigen Reibschluß-Erzeugungsvorrichtung und Fräswerkzeug zum Einbau einer derartigen Reibschluß-Erzeugungsvorrichtung in ein Dental-Attachment |
| DE19858195C1 (de) * | 1998-12-17 | 2000-05-18 | Si Tec Gmbh | Vorrichtung zum Festlegen eines Zahnersatzes |
| DE10011969C1 (de) * | 2000-03-11 | 2001-08-23 | Si Tec Gmbh | Dental-Geschiebe |
| DE10011968C2 (de) * | 2000-03-11 | 2002-01-31 | Si Tec Gmbh | Vorrichtung zum Festlegen von herausnehmbarem Zahnersatz an festsitzendem Zahnersatz |
| DE10051520C2 (de) * | 2000-10-17 | 2003-03-20 | Stefan Wintermantel | Halteelement für Zahnersatz |
| DE102007012880A1 (de) | 2007-03-17 | 2008-09-18 | Rainer Hamann | Zahntechnisches Halteelment und Verankerung im/am Zahnersatz |
| ES2336761B1 (es) * | 2009-09-18 | 2011-05-11 | Desarrollos Dentales Plus Tres, S.L. | Estructura telescopica extraible pra una protesis dental. |
| EP2387968B1 (de) | 2010-05-21 | 2014-06-11 | Si-tec GmbH Dental-Spezialartikel | Vorrichtung zum Festlegen von herausnehmbarem Zahnersatz an festsitzendem Zahnersatz |
| DE202011104009U1 (de) | 2011-08-02 | 2012-11-07 | Si-Tec Gmbh Dental-Spezialartikel | Vorrichtung zum Freihalten eines Aufnahmeraums bei der Herstellung von Zahnersatz |
| DE102011109252B4 (de) | 2011-08-02 | 2017-11-02 | Si-Tec Gmbh Dental-Spezialartikel | Vorrichtung zum Freihalten eines Aufnahmeraums bei der Herstellung von Zahnersatz |
| DE202014002752U1 (de) | 2014-03-31 | 2015-07-02 | Si-Tec Gmbh Dental-Spezialartikel | Vorrichtung zur temporären Halterung von herausnehmbarem Zahnersatz an festsitzendem Zahnersatz |
| KR101633259B1 (ko) * | 2016-02-25 | 2016-06-24 | 채희진 | 착탈이 가능한 임플란트 결합보철물 |
| DE202017101605U1 (de) | 2017-03-20 | 2018-06-25 | Si-Tec Gmbh Dental-Spezialartikel | Vorrichtung zum Festlegen von herausnehmbarem Zahnersatz an festsitzendem Zahnersatz |
| DE102018104364B4 (de) * | 2018-02-27 | 2020-11-19 | Roland Heinz | Halteelement für die Dentalprothetik |
| DE102018118637B4 (de) | 2018-08-01 | 2021-08-05 | Si-Tec Gmbh Dental-Spezialartikel | Vorrichtung zur Befestigung und/oder zur Unterstützung der Befestigung von herausnehmbarem Zahnersatz an festsitzendem Zahnersatz |
| DE202018104430U1 (de) | 2018-08-01 | 2019-08-06 | Si-Tec Gmbh Dental-Spezialartikel | Vorrichtung zur Befestigung und/oder zur Unterstützung der Befestigung von herausnehmbarem Zahnersatz an festsitzendem Zahnersatz |
| DE102023106224B3 (de) | 2023-03-13 | 2024-09-19 | Robert Laux | Zahnimplantat mit mehreren Implantatteilen |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH639551A5 (en) * | 1980-10-15 | 1983-11-30 | Becker Helmut | Telescope attachment |
| DE2945489C2 (de) * | 1979-11-10 | 1986-03-13 | Martin 5630 Remscheid Röper | Reibungsbehafteter Anker für herausnehmbaren Zahnersatz |
| CH659383A5 (en) * | 1982-03-16 | 1987-01-30 | Herbert Dr Med Dent Spang | Device for holding dental prosthetic telescope crowns together |
| EP0270108A2 (de) * | 1986-12-04 | 1988-06-08 | Nova-Pro Attachment GmbH | Aufsteckkrone |
-
1989
- 1989-08-16 DE DE8909755U patent/DE8909755U1/de not_active Expired
-
1990
- 1990-02-06 ES ES909050010A patent/ES2040672A6/es not_active Expired - Fee Related
- 1990-02-06 DE DE90DE9000078D patent/DE4090310D2/de not_active Expired - Lifetime
- 1990-02-06 DE DE4090310A patent/DE4090310C1/de not_active Expired - Lifetime
- 1990-02-06 AU AU50266/90A patent/AU5026690A/en not_active Abandoned
- 1990-02-06 WO PCT/DE1990/000078 patent/WO1990009766A1/de not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2945489C2 (de) * | 1979-11-10 | 1986-03-13 | Martin 5630 Remscheid Röper | Reibungsbehafteter Anker für herausnehmbaren Zahnersatz |
| CH639551A5 (en) * | 1980-10-15 | 1983-11-30 | Becker Helmut | Telescope attachment |
| CH659383A5 (en) * | 1982-03-16 | 1987-01-30 | Herbert Dr Med Dent Spang | Device for holding dental prosthetic telescope crowns together |
| EP0270108A2 (de) * | 1986-12-04 | 1988-06-08 | Nova-Pro Attachment GmbH | Aufsteckkrone |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0490238B1 (de) * | 1990-12-12 | 1997-05-28 | FR- KONSTRUKTIONSELEMENTE FÜR ZAHNPROTHETIK GmbH & CO | Hilfsteil zum Sichern eines abnehmbaren Zahnprothesenteils an einem festsitzenden Zahnprothesenteil |
| EP0504665A1 (de) * | 1991-03-13 | 1992-09-23 | Adam Obersat | Verbindungselement für die Zahnprothetik |
| DE19856204C2 (de) * | 1998-06-12 | 2000-08-17 | Si Tec Gmbh | Dental-Geschiebe |
| DE10036825A1 (de) * | 2000-07-28 | 2002-02-14 | Si Tec Gmbh | Steggeschiebe |
| WO2003032862A1 (en) | 2001-10-11 | 2003-04-24 | Alessandro Cattaneo | Connection for dental prostheses |
| US20120178052A1 (en) * | 2011-01-10 | 2012-07-12 | Lin Tai-Wu | Structure of artificial tooth |
| DE202012010333U1 (de) | 2012-10-30 | 2014-02-03 | Si-Tec Gmbh Dental-Spezialartikel | Vorrichtung zur lösbaren Festlegung von herausnehmbarem Zahnersatz an festsitzendem Zahnersatz |
| DE102012219804A1 (de) | 2012-10-30 | 2014-04-30 | Si-Tec Gmbh Dental-Spezialartikel | Vorrichtung zur lösbaren Festlegung von herausnehmbarem Zahnersatz an festsitzendem Zahnersatz |
| DE102012219804B4 (de) * | 2012-10-30 | 2018-04-12 | Si-Tec Gmbh Dental-Spezialartikel | Vorrichtung zur lösbaren Festlegung von herausnehmbarem Zahnersatz an festsitzendem Zahnersatz |
| DE202012012437U1 (de) | 2012-12-27 | 2013-03-13 | Rainer Manfred Hettrich | Aktives/passives Friktions-/Retentionselement horizontal für teleskopierende Kronen, Stege oder feinmechenische Halteelemente in der Dentalprothetik |
| US11523888B2 (en) | 2016-10-07 | 2022-12-13 | 3M Innovative Properties Company | Ceramic dental restorations made by additive manufacturing |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4090310D2 (en) | 1992-01-30 |
| AU5026690A (en) | 1990-09-26 |
| DE4090310C1 (de) | 1998-10-22 |
| DE8909755U1 (de) | 1989-10-05 |
| ES2040672A6 (es) | 1993-10-16 |
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