DE3715341A1

DE3715341A1 - Conical crown finished parts and use thereof as ready-made connecting elements

Info

Publication number: DE3715341A1
Application number: DE19873715341
Authority: DE
Inventors: Kerstin Koerber; Sebastian Koerber
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-05-08
Filing date: 1987-05-08
Publication date: 1988-11-24

Abstract

In order to eliminate the disadvantages of the previously known conical crowns as regards defined adhesion, conical crown finished parts were presented and their use as ready-made connecting elements was described. These elements are prefabricated as high-precision adjustment members for vital and avital anchorage teeth.

Description

Seit den Grundlagenuntersuchungen von 1969 von K. H. Körber über die Anwendungsmöglichkeit konischer Passungen in der zahnärztlichen Prothetik ist die Konuskrone ein fester Bestandteil der Behandlungstechnik im Lückengebiß. Die Konus krone wird hierbei der individuellen Zahnstumpfform ent sprechend als innere Krone in Wachs oder Kunststoff model liert und im dentalen Gußverfahren in Dentallegierung herge stellt. Nach einer Bearbeitung ihrer Gußoberflächen erfolgt die Einprobe der Innenkrone im Munde. Nach Übertragung der Kieferrelation wird die Außenkrone über die nunmehr metallene Innenpassung abermals aus Wachs oder Kunststoff geformt und ebenfalls im dentalen Gußverfahren hergestellt. Neben den bekannten großen Toleranzen und Fehlerhäufigkeit in der Pas sung beim Dentalguß ist es vor allem der individuell herge stellte Konushaftwinkel sowie die manuelle, zahntechnische Arbeitsweise, welche eine hohe Streuung der Haftkraftwerte verursacht, wodurch die Konuskrone im praktischen Einsatz oft unbrauchbar wird.Since the basic investigations by K. H. Körber in 1969 about the application of conical fits in the dental prosthetics, the conical crown is a firm one Part of the treatment technique in the gap dentition. The cone crown is the individual tooth stump shape speaking as an inner crown in wax or plastic model liert and herge in the dental casting process in dental alloy poses. After machining their cast surfaces the try-in of the inner crown in the mouth. After transferring the The outer crown over the now metal is the jaw relation Inner fit again molded from wax or plastic and also manufactured in the dental casting process. In addition to the known large tolerances and frequency of errors in the pas solution for dental casting, it is primarily the individual solution provided taper angle as well as the manual, dental technology Working method, which has a high dispersion of the adhesive force values caused by what the cone crown often in practical use becomes unusable.

Die erfindungsgemäßen Konuskronen sind dadurch gekennzeich net, daß die durch bisherige individuelle Einzelherstellung bedingte Fehlerhäufigkeit und Unberechenbarkeit der Passung entfallen. Durch industrielle Vorfertigung der konischen Dop pelpassung ist es erstmals möglich, alle an Patienten ange wandten Konuskronen stets mit optimalem Konuswinkel, Plani tät, Oberflächenbeschaffenheit und Feingefüge des Werkstoffes im Bereich der Toleranz einer Feinpassung gemäß üblichen DIN- Normen zu versehen. Neben der reproduzierbaren Haftung, die je nach Verwendungszweck - ob Haftanker oder Stützanker - durch Variation des Konuswinkels, der Oberflächenstruktur und der Haftflächen vorgegeben wird, ist die rationelle Anwendung in der Praxis ein unschätzbarer Vorteil, indem die zeitraubende - und fehlerbehaftete - individuelle Herstellung im Dentalguß verlassen wird.The conical crowns according to the invention are characterized by this net that through the previous individual production Conditional error frequency and unpredictability of the fit omitted. Through industrial prefabrication of the conical dop It is now possible for the first time to fit all patients always used conical crowns with an optimal conical angle, Plani activity, surface quality and fine structure of the material in the range of the tolerance of a fine fit according to the usual DIN Standards. In addition to reproducible liability, the depending on the intended use - whether adhesive anchor or support anchor - by varying the cone angle, the surface structure and the stipulated areas is given, the rational application an invaluable benefit in practice by the time-consuming - and error-prone - individual production is left in dental casting.

Zur rationellen Anwendung sind die Innenformen der Innenkro nen den mittleren Formen präparierter Zahnstümpfe für jedenThe inner forms of the inner crown are for efficient use the middle forms of prepared tooth stumps for everyone

Claims

1. cone crowns, characterized in that the inner crown and outer crown are prefabricated in industrially manufactured precision fit according to the usual DIN standards and are used as assembled connecting elements for supporting partial dentures and bridge dentures and the respective cone angle according to alloy or another material and use Purpose is given, their shape and size are matched to the mean shape of each topographical tooth in the dental arch, the external fits contain retention elements for connection to prosthetic parts and the prefabricated fits are arranged in an assortment.

2. cone crowns according to claim 1, characterized in that the final margin towards the gumline the indivi corresponding preparation form by plastic, Ceramic and the casting process is reproduced and the External shape of the outer crown through surface structuring is designed to hold veneering material and either the metal occlusal surface is prefabricated contains.

3. cone crowns according to claim 1 and 2, characterized net that they apply in a reduced form nerve-dead teeth and over pin anchors are suitable.