US 4,906,420 AGranted

Method for producing prosthetic constructions

AssigneesNobelpharma AB, AB Novel Plast

InventorsIzidor Brajnovic, Ingrid Tilly, Hans Wurth

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Abstract

Oral and extraoral prosthetic constructions of composite material with considerable fiber content, and in particular, jawbone anchored dental bridges of reinforced plastic, are made by the following method. A number of mutually retracted tubularly braided fibers (1), possibly in combination with continuous fiber strands, so-called roving, together constitute a fiber system which is packed in a tube, hose (2) or the like which is sealed and serves as outer packaging. A suitable matrix material, for example acrylic plastic, is injected into the hose for impregnation (wetting) of the enclosed fiber system, whereafter the hose (2) is removed. The fiber system is then polymerized to form a finished prosthesis blank in a mold. The prosthesis blank is then given suitable form and appearance by conventional after treatment.

Claims8

Dependent claims

A method for the production of oral and extraoral prosthetic constructions of composite material having considerable fiber content, which comprises:

bunching or braiding together a plurality of fibers to form an elongate fiber system;
packing said elongate fiber system in a tube wherein said tube is closed and sealed to serve as transport packaging for said elongate fiber system;
supplying lengths of said packed tube to where said prosthetic constructions are produced, and preparing desired lengths of said packed tube for injection of a matrix material;
injecting into said packed tube said matrix material for completely impregnating said elongate fiber system;
removing said tube from said impregnated elongate fiber system, and applying said elongate fiber system impregnated with said matrix material to a mold;
causing said matrix material to polymerize to thereby form a prosthesis blank;
subjecting said prosthesis blank to aftertreatment to provide an oral or extraoral prosthetic construction.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/197,073Filed 18 May 1988
Priority: SE 8702128-322 May 1987
Granted: 6 Mar 1990
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B29C 70/542
Component parts, details or accessories; Auxiliary operations , e.g. feeding or storage of prepregs or SMC after impregnation or during ageing:…
A61C 8/0048
Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools:…
A61C 13/275
Fastening prostheses in the mouth: removably secured by using bridging bars or rails between residual teeth
B29L 2031/7536
Artificial members, protheses: artificial teeth