DE20307643U1 - Semi-finished auxiliary element to be used for preparation of tooth implant, made of vinyl and suitable for scanning - Google Patents

Abstract

The outer shape of the semi-finished auxiliary element made of a synthetic material or wax can be adjusted with additional layers of wax or by grinding off surplus material. It has a surface easy to read by a scanner, in particular the slightly inclined inner area used for the insertion of the threaded bolt and for being joined to the base. The element can also be joined with modeling wax to an individually processed base.

Description

The invention relates to a modelling aid for the simple and efficient production of individual implant abutment parts using the known copy milling process of the CERCON milling machine from DEöUDENT, formerly DEGUSSA.

A known technique is assumed: the individual modeling in wax or plastic for the production of dental prostheses. These are usually cast from metal using the lost-metal casting process or, as here, read by a laser and copy-milled from a zirconium oxide block in the "CERCON machine".

The idea to be protected is the prefabricated manufacture of a modelling aid or semi-finished product for the manufacture of individual implant abutment parts. These are modelled directly over the base plate of the titanium base of the respective implant system. They are preferably made of vinyl plastic or a similar plastic and already have a good internal fit on the implant bases.

The external shape of the modelling aid can be individualised by grinding or by applying wax, and then converted into zirconium oxide by scanning .

The modeling aid must have a surface shape that is easy to read for the scanner, i.e. all opposite sides should have an inclination angle of at least >0.5°. This applies in particular to the internal functional walls towards the screw channel and the base fit.

After milling and sintering the individual abutment part, the zirconium oxide abutment part is bonded to the plate of the titanium base. This work step is well known and is used for prefabricated abutments.

A modelling aid can currently be used sensibly with various implant abutments or systems available on the market. Various implant manufacturers offer suitable base plates in their system , but without modelling aids, e.g.:

a: prefabricated base plate of the Frialit2 / Xive implant from Friadent / Dentsply (Cerabase)

b: prefabricated base plate of the Camioc implant from Altatec c: or similar

When using the described titanium base parts available on the market, the plate can be individually ground and the modelling aid can also be adapted to this base with wax. This allows further individualisation of the superstructure. A rotation lock is not absolutely necessary, but it makes the joining technique easier.

If the implant manufacturer produces a new base plate specifically for this scanning or modelling technique, various advantageous details can be incorporated:

1. Anti-rotation protection through oval adhesive tower

2. Conical adhesive connection tower to take over the internal angle >0.5°

3. Reduction of the outer radius for a circular resting of the zirconium oxide base on the implant.

The invention shows that the use of the modelling aid enables a rational and precise production of an individual implant adhesive component.

Claims (3)

1. Modelling aid for the production of individual implant structures on various implant systems, characterized in that it consists of a plastic or plastic-like wax. 2. Modelling aid according to claim 1, characterized in that the aid can be ground and extended with wax or the like, and can be used for scanning in the CERCON machine. 3. Modelling aid according to protection claims 1 and 2, characterized in that the inner functional walls have an angle of inclination of at least 0.5° that is easily readable by the CERCON laser (see drawing)