WO1986003668A1 - Two-part tooth bridge - Google Patents

Two-part tooth bridge Download PDF

Info

Publication number
WO1986003668A1
WO1986003668A1 PCT/EP1985/000715 EP8500715W WO8603668A1 WO 1986003668 A1 WO1986003668 A1 WO 1986003668A1 EP 8500715 W EP8500715 W EP 8500715W WO 8603668 A1 WO8603668 A1 WO 8603668A1
Authority
WO
WIPO (PCT)
Prior art keywords
bridge
joint
pin
sliding
bore
Prior art date
Application number
PCT/EP1985/000715
Other languages
German (de)
French (fr)
Inventor
Götz SIEBERT
Original Assignee
Fried. Krupp Gesellschaft Mit Beschränkter Haftung
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 Fried. Krupp Gesellschaft Mit Beschränkter Haftung filed Critical Fried. Krupp Gesellschaft Mit Beschränkter Haftung
Publication of WO1986003668A1 publication Critical patent/WO1986003668A1/en

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
    • A61C13/26—Dentures without palates; Partial dentures, e.g. bridges
    • 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

Definitions

  • the invention relates to a two-part ' dental medical bridge, the two parts of which are connected via a joint.
  • Such bridges are already known as so-called "physiological bridges" with unilaterally unstable anchoring in a cast filling.
  • they do not show the desired dental success.
  • Long-span fixed bridges have the disadvantage that the paradontium of the abutment tooth is damaged, tension pains occur and loosening of an anchor crown can occur.
  • the main reason is that the individual physiological deflection of the canines, premolars and molars, caused by the elastic deformation, ie the bending and twisting of the mandibular branches, is influenced by such a solid, wide-span bridge.
  • the object of the invention is to improve a two-part dental bridge of the type mentioned at the outset in such a way that it avoids the disadvantages of the fixed wide-span bridge on the one hand and the physiological bridge on the other hand even when it is designed as a wide-span bridge.
  • the bridge is designed in accordance with the preamble of claim 1 in accordance with the characterizing part of this claim.
  • a joint designed as a sliding swivel joint with an axis of rotation and displacement direction running approximately in the longitudinal direction of the bridge enables the posterior teeth to fanned out when the lower jaw protrudes or when the mouth is opened. Because the joint is both a relative rotation of the two bridge parts pushing in the sagittal direction also allows a change in distance in this direction.
  • a particularly preferred embodiment of the invention provides that the sliding swivel joint consists of a pin of high strength, in particular of noble metal or non-noble metal wire on one bridge part and a bearing bore with a clearance-free fit on the other bridge part, with empty mastication and mastication the individual deflection of the teeth in the transverse direction is made possible by the rotation about the sagittal pin axis and in the vertical direction by an additional elastic bend of the pin.
  • the abutment teeth are stiffened by this bridge in such a way that tipping, i.e. a reduction in distance is prevented.
  • the sliding swivel joint is arranged between one of the anchor crowns and the bridge body. A division of the bridge at this point is known from the so-called physilogical bridge.
  • a further embodiment of the invention is that the sliding swivel joint is assigned to the anterior anchor crown.
  • the pin is located on the anchor crown and the bearing bore on the bridge body, the pin running distally or mesially. It can be soldered or cast onto the anchor crown, in particular the anterior anchor crown.
  • the length of the pin is preferably about 8 to 15 mm, while its diameter can be about 1 to 1.5 mm.
  • the bearing bore is formed by the precision bore of a sleeve embedded in the bridge body, in particular made of noble metal or non-noble metal. The use of these two bearing parts ensures that a correct fit for the sliding swivel seat is maintained.
  • the drawing shows an embodiment of the invention schematically in a front view.
  • the two-part dental bridge consists of the two bridge parts 1 and 2, which are rotatably and slidably connected to one another via a sliding rotary joint 3.
  • the sliding rotary joint 3 consists of a pin 7 of the one bridge part and a bearing bore 8 of the other bridge part.
  • one bridge part 1 consists only of one anchor crown 9, while the other bridge part 2 is formed by the other anchor crown 4 and a bridge body 5. These two bridge elements 4 and 5 are held together, for example by means of a solder connection 6.
  • One anchor crown 9 is preferably an anterior anchor crown, which is placed, for example, on the tooth (33).
  • the exemplary embodiment represents a wide-span bridge in the lower jaw, the other, in this case posterior anchor crown 4 being attached to the tooth (38).
  • the length of the entire bridge is approx. 45 mm.
  • the pin 7 has a high strength and it is preferably made of precious metal or non-precious metal wire. It extends distally and sagittally approximately in the longitudinal direction of the bridge body 5 and is soldered or cast onto an anchor crown 9. The fit between the pin and the hole is chosen so tight that pushing and turning is just still possible.
  • the bearing bore 8 can be the bore of a sleeve 10 embedded in the relevant bridge part or the bridge body 5.

Abstract

In order to avoid in a dual part tooth bridge the disadvantages of a long rigid bridge, such as the deterioration of the paradontal tissue, as well as the disadvantages of a physiological bridge, the joint of a tooth bridge, even when the latter is fairly long, is designed as a sliding rotoid joint (3) with a rotational axis extending in the direction of the length of the bridge.

Description

Zweiteilige zahnmedizinische BrückeTwo-piece dental bridge
Die Erfindung bezieht sich auf eine zweiteilige 'zahn¬ medizinische Brücke, deren beide Teile über ein Gelenk verbunden sind. Derartige Brücken sind als sogenannte "physiologische Brücken" mit einseitig labiler Veran¬ kerung in einer Gußfüllung bereits bekannt. Sie zeigen allerdings nicht den gewünschten zahnmedizinischen Er¬ folg. Weitspannende feste Brücken haben den Nachteil, daß das Paradontium der Pfeilerzahne geschädigt wird, Spannungsschmerzen auftreten und ein Lösen einer Anker¬ krone auftreten kann. Der Hauptgrund liegt darin, daß die individuelle physiologische Auslenkung der Eck¬ zähne, der Prämolaren und Molaren, hervorgerufen durch die elastische Deformation, d.h. die Verbiegung und Verdrillung der Unterkieferäste durch solch eine feste, weitspannende Brücke, beeinflußt wird.The invention relates to a two-part ' dental medical bridge, the two parts of which are connected via a joint. Such bridges are already known as so-called "physiological bridges" with unilaterally unstable anchoring in a cast filling. However, they do not show the desired dental success. Long-span fixed bridges have the disadvantage that the paradontium of the abutment tooth is damaged, tension pains occur and loosening of an anchor crown can occur. The main reason is that the individual physiological deflection of the canines, premolars and molars, caused by the elastic deformation, ie the bending and twisting of the mandibular branches, is influenced by such a solid, wide-span bridge.
Die Aufgabe der Erfindung besteht nun darin, eine zwei¬ teilige zahnmedizinische Brücke der eingangs genannten Art so zu verbessern, daß sie auch bei einer Ausbildung als weitspannende Brücke die genannten Nachteile der festen weitspannenden Brücke einerseits und der physiolo¬ gische Brücke andererseits vermeidet.The object of the invention is to improve a two-part dental bridge of the type mentioned at the outset in such a way that it avoids the disadvantages of the fixed wide-span bridge on the one hand and the physiological bridge on the other hand even when it is designed as a wide-span bridge.
Zur Lösung dieser Aufgabe wird erfindungsgemäß vorge¬ schlagen, daß die Brücke gemäß dem Oberbegriff des An- Spruchs 1 entsprechend dem kennzeichnenden Teil dieses Anspruchs ausgebildet ist. Durch die Verwendung eines als Schiebe-Drehgelenk ausgebildeten Gelenks mit einer etwa in Längsrichtung der Brücke verlaufenden Dreh¬ achse und Verschieberichtung, wird bei der Protrusion des Unterkiefers oder beim Öffnen des Mundes ein Auf¬ fächern der Seitenzähne ermöglicht. Weil das Gelenk sowohl eine Relativdrehunσ der beiden Brückenteile als auch ein Schieben in sagittaler Richtung zuläßt, ist in dieser Richtung eine Distanzveränderung möglich.To achieve this object, it is proposed according to the invention that the bridge is designed in accordance with the preamble of claim 1 in accordance with the characterizing part of this claim. The use of a joint designed as a sliding swivel joint with an axis of rotation and displacement direction running approximately in the longitudinal direction of the bridge enables the posterior teeth to fanned out when the lower jaw protrudes or when the mouth is opened. Because the joint is both a relative rotation of the two bridge parts pushing in the sagittal direction also allows a change in distance in this direction.
Eine besonders bevorzugte Ausführungsform der Er¬ findung sieht vor, daß das Schiebe-Drehgelenk aus einem Stift hoher Festigkeit, insbesondere aus Edelmetall- oder Nichtedelmetall-Draht am einen Brückenteil und einer Lagerbohrung mit spielfreier Passung am anderen Brückenteil besteht, bei Leer- mastikation und Mastikation wird die individuelle Auslenkung der Zähne in transversaler Richtung durch die Rotation um die sagittale Stiftachse und in ver¬ tikaler Richtung durch eine zusätzliche elastische Biegung des Stiftes ermöglicht. Andererseits werden aber die Pfeilerzähne durch diese Brücke so ver¬ steift, daß ein Kippen, d.h. eine Distanzverminderung, verhindert wird. Das Schiebe-Drehgelenk ist in Weiter¬ bildung der Erfindung zwischen einer der Ankerkronen und dem Brückenkörper angeordnet. Eine Teilung der Brücke an dieser Stelle ist von der sogenannten physilogi- schen Brücke her bekannt.A particularly preferred embodiment of the invention provides that the sliding swivel joint consists of a pin of high strength, in particular of noble metal or non-noble metal wire on one bridge part and a bearing bore with a clearance-free fit on the other bridge part, with empty mastication and mastication the individual deflection of the teeth in the transverse direction is made possible by the rotation about the sagittal pin axis and in the vertical direction by an additional elastic bend of the pin. On the other hand, the abutment teeth are stiffened by this bridge in such a way that tipping, i.e. a reduction in distance is prevented. In a further development of the invention, the sliding swivel joint is arranged between one of the anchor crowns and the bridge body. A division of the bridge at this point is known from the so-called physilogical bridge.
Eine weitere Ausgestaltung der Erfindung besteht darin, daß das Schiebe-Drehgelenk der anterioren Ankerkrone zugeordnet ist. Gemäß einer besonders bevorzugten Variante der Efindung befinden sich der Stift an der Ankerkrone und die Lagerbohrung am Brückenkörper, wo- bei der Stift distal bzw. mesial verläuft. Er kann an die Ankerkrone, insbesondere die anteriore Ankerkrone, angelötet oder angegossen sein.A further embodiment of the invention is that the sliding swivel joint is assigned to the anterior anchor crown. According to a particularly preferred variant of the invention, the pin is located on the anchor crown and the bearing bore on the bridge body, the pin running distally or mesially. It can be soldered or cast onto the anchor crown, in particular the anterior anchor crown.
Die Länge des Stiftes beträgt in bevorzugter Weise etwa 8 bis 15 mm, während sein Durchmesser ca. 1 bis 1,5 mm betragen kann. Schließlich ist es noch besonders vorteilhaft, daß die Lagerbohrung durch die Präzisionsbohrung einer in den Brückenkörper eingebetteten Hülse, insbesondere aus Edelmetall oder Nichtedelmetall, gebildet ist. Durch die Verwendung dieser beiden Lagerteile ist die Ein¬ haltung einer korrekten Passung für den Schiebe-Dreh- sitz bewährleistet.The length of the pin is preferably about 8 to 15 mm, while its diameter can be about 1 to 1.5 mm. Finally, it is particularly advantageous that the bearing bore is formed by the precision bore of a sleeve embedded in the bridge body, in particular made of noble metal or non-noble metal. The use of these two bearing parts ensures that a correct fit for the sliding swivel seat is maintained.
Die Erfindung wird nachstehend anhand der Zeichnung näher erläutert.The invention is explained below with reference to the drawing.
Die Zeichnung zeigt ein Ausführungsbeispiel der Erfin¬ dung schematisch in einer Vorderansicht.The drawing shows an embodiment of the invention schematically in a front view.
Die zweiteilige zahnmedizinische Brücke besteht aus den beiden über ein Schiebe-Drehgelenk 3 dreh- und schiebbar miteinander verbundenen Brückenteilen 1 und 2. Das Schiebe-Drehgelenk 3 besteht aus einem Stift 7 des einen Brückenteils und einer Lagerbohrung 8 des anderen Brückenteils. Beim Ausführungsbeispiel be¬ steht der eine Brückenteil 1 lediglich aus der einen Ankerkrone 9, während das andere Brückenteil 2 durch die andere Ankerkrone 4 und einen Brückenkörper 5 ge¬ bildet ist. Diese beiden Brückenelemente 4 und 5 sind beispielsweise mittels einer Lötverbindung 6 fest zu¬ sammengehalten. Bei der einen Ankerkrone 9 handelt es sich vorzugsweise um eine anteriore Ankerkrone, die beispielsweise auf den Zahn (33) aufgesetzt ist. Das Ausführungsbe.ispiel stellt eine weitspannige Brücke im Unterkiefer dar, wobei die andere, in diesem Falle posteriore Ankerkrone 4 am Zahn (38) befestigt ist. Die Länge der gesamten Brücke beträgt ca. 45 mm. Der Stift 7 besitzt eine hohe Festigkeit und er ist vorzugsweise aus Edelmetall- oder Nichtedel etall- Draht hergestellt. Er erstreckt sich distal und sagittal etwa in Längsrichtung des Brückenkörpers 5 und ist an die eine Ankerkrone 9 angelötet oder ange¬ gossen. Die Passung zwischen Stift und Bohrung ist so eng gewählt, daß ein Schieben und Drehen gerade noch möglich ist. Bei der Lagerbohrung 8 kann es sich um die Bohrung einer in das betreffende Brückenteil bzw. den Brückenkörper 5 eingebettete Hülse 10 handeln. The two-part dental bridge consists of the two bridge parts 1 and 2, which are rotatably and slidably connected to one another via a sliding rotary joint 3. The sliding rotary joint 3 consists of a pin 7 of the one bridge part and a bearing bore 8 of the other bridge part. In the exemplary embodiment, one bridge part 1 consists only of one anchor crown 9, while the other bridge part 2 is formed by the other anchor crown 4 and a bridge body 5. These two bridge elements 4 and 5 are held together, for example by means of a solder connection 6. One anchor crown 9 is preferably an anterior anchor crown, which is placed, for example, on the tooth (33). The exemplary embodiment represents a wide-span bridge in the lower jaw, the other, in this case posterior anchor crown 4 being attached to the tooth (38). The length of the entire bridge is approx. 45 mm. The pin 7 has a high strength and it is preferably made of precious metal or non-precious metal wire. It extends distally and sagittally approximately in the longitudinal direction of the bridge body 5 and is soldered or cast onto an anchor crown 9. The fit between the pin and the hole is chosen so tight that pushing and turning is just still possible. The bearing bore 8 can be the bore of a sleeve 10 embedded in the relevant bridge part or the bridge body 5.

Claims

A n s p r ü c h e Expectations
1. Zweiteilige zahnmedizinische Brücke, deren beide Teile über ein Gelenk verbunden sind, dadurch ge¬ kennzeichnet, daß das Gelenk als Schiebe-Drehge¬ lenk (3) mit einer etwa in Längsrichtung der Brücke verlaufenden Drehachse ausgebildet ist.1. Two-part dental bridge, the two parts of which are connected via a joint, characterized in that the joint is designed as a sliding rotary joint (3) with an axis of rotation running approximately in the longitudinal direction of the bridge.
2. Brücke nach Anspruch 1, dadurch gekennzeichnet, daß das Schiebe-Drehgelenk (3) aus einem Stift (7) hoher Festigkeit, insbesondere aus Edelmetall- oder Nicht- edelmetall-Draht, am einen Brückenteil und einer Lagerbrohung (8) mit spielfreier Passung am anderen Brückenteil besteht.2. Bridge according to claim 1, characterized in that the sliding swivel joint (3) from a pin (7) of high strength, in particular made of precious metal or non-precious metal wire, on a bridge part and a bearing hole (8) with clearance-free fit on the other part of the bridge.
3. Brücke,nach Anspruch 1 oder 2, dadurch gekennzeich¬ net, daß das Schiebe-Drehgelenk (3) zwischen einer der Ankerkronen (4, 9) und dem Brückenkörper (5) an- geordnet ist.3. Bridge, according to claim 1 or 2, characterized gekennzeich¬ net that the sliding rotary joint (3) between one of the anchor crowns (4, 9) and the bridge body (5) is arranged.
4. Brücke nach Anspruch 3, dadurch gekennzeichnet, daß das Schiebe-Drehgelenk (3) der anterioren Ankerkrone zugeordnet ist.4. Bridge according to claim 3, characterized in that the sliding swivel joint (3) is assigned to the anterior anchor crown.
5. Brücke nach Anspruch 3, dadurch gekennzeichnet, daß sich der Stift (7) an der Ankerkrone (4, 9) und die5. Bridge according to claim 3, characterized in that the pin (7) on the anchor crown (4, 9) and the
Lagerbohrung (8) am Brückenkörper (5) befinden, wo¬ bei der Stift di≤tal bzw. esial verläuft.Bore (8) are located on the bridge body (5), where the pin runs dially or esially.
6. Brücke nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Länge des Stiftes (7) etwa 8 bis 15 mm und sein Durch¬ messer ca. 1 bis 1,5 mm betragen. Brücke nach wenigstens einem der vorhergehenden Anprüche, dadurch gekennzeichnet, daß die Lager¬ bohrung (8) durch die Präzisionsbohrung einer in den Brückenkörper (5) eingebetteten Hülse, ins¬ besondere aus Edelmetall oder Nichtedelmetall gebildet ist. 6. Bridge according to at least one of the preceding claims, characterized in that the length of the pin (7) is approximately 8 to 15 mm and its diameter is approximately 1 to 1.5 mm. Bridge according to at least one of the preceding claims, characterized in that the bearing bore (8) is formed by the precision bore of a sleeve embedded in the bridge body (5), in particular made of noble metal or non-noble metal.
PCT/EP1985/000715 1984-12-19 1985-12-17 Two-part tooth bridge WO1986003668A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEG8437158.7U 1984-12-19
DE19848437158U DE8437158U1 (en) 1984-12-19 1984-12-19 TWO-PIECE DENTAL BRIDGE

Publications (1)

Publication Number Publication Date
WO1986003668A1 true WO1986003668A1 (en) 1986-07-03

Family

ID=6773918

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1985/000715 WO1986003668A1 (en) 1984-12-19 1985-12-17 Two-part tooth bridge

Country Status (3)

Country Link
EP (1) EP0205515A1 (en)
DE (1) DE8437158U1 (en)
WO (1) WO1986003668A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008030883A1 (en) * 2008-06-30 2010-01-28 Jacob Zahntechnik Ohg Device for dental prosthesis, has mandible side primary element and secondary element attached to primary element using friction element

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE274860T1 (en) 1995-12-19 2004-09-15 Ivoclar Vivadent Ag METHOD FOR PRODUCING DENTAL CROWNS AND/OR DENTAL BRIDGES

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE660344C (en) * 1936-07-21 1938-11-14 Curt Fritzsche Dr Process for the production of cavities in dental bridges, artificial teeth and the like. like
US3878608A (en) * 1972-04-20 1975-04-22 Gil Castillo Arturo Removable denture connection

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE660344C (en) * 1936-07-21 1938-11-14 Curt Fritzsche Dr Process for the production of cavities in dental bridges, artificial teeth and the like. like
US3878608A (en) * 1972-04-20 1975-04-22 Gil Castillo Arturo Removable denture connection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008030883A1 (en) * 2008-06-30 2010-01-28 Jacob Zahntechnik Ohg Device for dental prosthesis, has mandible side primary element and secondary element attached to primary element using friction element
DE102008030883B4 (en) * 2008-06-30 2010-04-29 Jacob Zahntechnik Ohg Device for dentures

Also Published As

Publication number Publication date
DE8437158U1 (en) 1985-03-21
EP0205515A1 (en) 1986-12-30

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