DE3608992A1 - Metallic net finished part structures for the cold plastic moulding of dental crown frames, and their use - Google Patents

Abstract

Nowadays, the fabrication of metallic frames for dental crowns to be subsequently coated with a ceramic or a plastic should be cost-effective and use an extremely small amount of a tissue-compatible metal in order to reduce costs. The present invention describes metallic net finished part structures for the cold plastic moulding of dental crown frames, and their use. These prefabricated metallic net structures have considerable advantages over the previously known methods of crown frame production.

Description

K. Körber Kiel, March 11, 1986

Hohrott 15
2305 Heikendorf

S. Koerber
Hohrott 15
2305 Heikendorf

PATENT APPLICATION

METAL NET STRUCTURES FOR COLD-PLASTIC FORMING OF DENTAL FRAMEWORKS AND THEIR USE

Vf Metal 1frames for tooth crowns are mainly used in dental Casting process produced and then clad in the anatomical tooth shape by means of dental ceramic or plastic. Another method uses star-shaped, pre-embossed metal sheets, which are then wrinkled on the tooth stump be formed mechanically.

Another method uses galvanization. Another method (PN ^0th 35 14 591.9) applies methods are cold plastic deformation in order planar Metal 1 slices to form a tooth stub.

In the present application, metal mesh structures are used presented that in a plane (Fig. 1) or already spatially preformed (Fig. 4) or a tooth stump whose shape-analogue model can be molded using cold plastic

(Fig. 2, Fig. 3).
& The prefabricated structures according to the invention have the great advantage that the cold plastic molding due to internal structural network displacements and displacements can be carried out more easily and without disruption, with at the same time very precise shape adaptation than with cold plastic molding of compact, homogeneous panes or foils. The network structures also have the advantage that no further measures are required to anchor the secondary facing materials, as is the case with all previous methods. The fine structure of the finished parts according to the invention can easily be aligned with the type of secondary facing material. You will find a uniform network, finely perforated foil, embossed, punched, cast, galvanized,

SAO ORIGJNAL

Woven from Metal 1 wires or made using spark erosion.
D A particularly preferred embodiment uses a large-area metal mesh from which the dental technician himself cuts or stamps the appropriate part. Another preferred embodiment uses different network structures, the pattern of which varies depending on the subsequent function of the tooth crown, while another uses a basic pattern in which network structures and surfaces alternate (FIG. 5). In another embodiment, the network structure is arranged in multiple layers (FIG. 6). The metal 1netz-prefabricated part structures according to the invention are depending on the Uahl of the secondary verb! End material made of dental bonding alloy for ceramic or porcelain or of dental bonding alloy without secondary thermal reworking, e.g. for plastic.

In a particularly preferred embodiment of the invention Metal-1netz Fertigtei1 structures are made of platinum, palladium, iridium or an alloy of these metals in the alloy range: Pt-IOO O Z Pd 0-100 X _t X 0-100 Ir customized; in another version made of fine gold. The metal network structures according to the invention are also distinguished by the fact that their layer thickness can be varied from 5 μm to 500 μm depending on the intended use and that they are structured in one or more layers.

The use of the metal 1netz prefabricated structures according to the invention is characterized (Fig. 3) that the cold plastic molding on tooth stumps manually, mechanically by means of an elastic hollow punch or with the help of a method of automatic cold plastic molding according to the patent application PN °. 35 14 591.9 takes place. An embodiment further preferred is characterized in that the filigree portions of the mesh structure are coated with pure gold, so that the net after conformation fixed on the tooth stump in the melting temperature of the fine gold, ie it can be fused in this new spatial form to a homogeneous structure.

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Claims (11)

Sebastian Körber Kerstin Körber PRE-FABRICATED METAL NET STRUCTURES FOR THE COLD PLASTIC FORMING OF CROWN FRAMEWORKS AND THEIR USE. PATENT CLAIMS 1. Metal 1net prefabricated structures characterized in that that a flat, disc-shaped network of metal one Tooth stump or its shape-analogous model cold-plate is molded. 2. Metal 1netz prefabricated structures characterized in that that metal meshes are used in the form of pre-embossed hollow bodies. 3. Metal 1net prefabricated structures characterized in that that a metal net of uniform structure is punched, embossed, cast, galvanized, woven, braided or used as a prefabricated structure by spark erosion will. 4. Metal 1netz-prefabricated structures characterized in that that structure pattern and perforation density of the network structure aligned with the secondary facing resin is. 5. MetalInetz prefabricated structures characterized by that a large metal mesh is used, of the corresponding basic shape in the dental laboratory depending on the type, scope and height of a tooth stump is removed. 6. Metal 1netz prefabricated structures characterized in that that the structure of the network is different and multilayered according to the later function. • ν 7. Metal network prefabricated structures characterized that the fine structure of the network is only partially arranged in a finely perforated film. 8. Metal network prefabricated structures characterized that as a material depending on the UaKT of the secondary Veneering material, dental bonding alloys or primary dental 1alloys are used or that as The material used is platinum, palladium and iridium and gold or an alloy of these metals Proportions: Pt 0-100%, Ir 0-1 OQJi, Pd 0-100%, Au 0-100%. 9. Metal 1 net-manufactures egg 1 structures characterized by that their layer thickness depending on the intended use of 5 varies up to 500 pm. 10. Metal 1netz-Fertigtei1 s ^ p-trtit ure η characterized in that the kai tplastiktube molding is done manually, with an elastic Hoffstempel or with one of the methods for cold plastic molding according to the patent application P 35 14 591.9. g ^^ Tf ^ j- Jtcf ^^ A 40 ₍ & 11. Metal network prefabricated structures characterized that the filigree parts of the network structure for later Fusion with fine gold or a solder matched to the alloy of the metal network are coated. Sebastian Baskets T "* Q Kerstin Koerber PRE-FABRICATED METAL NETS FOR THE COLD-LASTIC SHAPING OF CROWN FRAMES AND THEIR AVOIDANCE Claim 10 Pre-fabricated metal mesh structures, characterized in that the cold-plastic molding is done manually by means of an elastic hollow punch or with another process for cold plastic molding.