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Method for producing dental molded parts

A technology for molded parts and teeth, which is applied in dentistry, dental prosthesis, medical science, etc. It can solve the problems of denture strength disappointment, thermoplastics that cannot be processed and reinforced fibers, etc., to achieve excellent mechanical properties, increase density, and avoid shrinkage Effect

Inactive Publication Date: 2008-08-27
F·韦科雷
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although PEEK is a plastic with excellent mechanical properties, the strength of dentures produced by this known method is very disappointing
Moreover, known methods are not available for processing thermoplastics with reinforcing fibers

Method used

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  • Method for producing dental molded parts
  • Method for producing dental molded parts

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Experimental program
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Embodiment Construction

[0083] According to FIG. 1 , a blank 1 formed of thermoplastic has a cylindrical form, the height of which is greater than its diameter. According to FIG. 2 , the blank 1 is additionally configured in the shape of a disk.

[0084] According to FIG. 3 , the wrap 2 comprises a wrap base 3 , a wrap wall or sleeve 4 and a wrap cover 5 .

[0085] The covering base 3 has a projection 6 in the middle part, the diameter of which corresponds to the blank 1 .

[0086] According to FIG. 3 , a wax model 7 of the dental molding to be produced, for example two crowns, is placed above the projection 6 . The wax pattern 7 is connected to the protrusion 6 with a wax rod 8 or the like. The casing 2 is filled with a heat-resistant curing molding compound 9 .

[0087] The molding compound 9 then cures in the casing 2 . Thereafter, the lid 5, the wrap wall 4 and the wrap base 3 are removed.

[0088] The wax pattern 7 comprising the wax rod 8 is then melted. Thus, a mold cavity 11 correspondi...

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Abstract

In order to produce dental molded parts for a dental prosthesis, a shaping model (7) of the desired dental molded part is made, for example, from wax. The model is embedded in a heat-resistant molding compound (9). The molding compound (9) is subsequently hardened, and the wax model (7) is melted in order to form a mold cavity (11) that corresponds to the negative of the desired dental molded part. The thermoplastic heated to the processing temperature is introduced with pressure into the formed mold cavity (11) in the molding compound (9), and the thermoplastic, which forms the desired dental molded part, is removed from the mold once the molding compound (9) is solidified. The molding compound (9) has a temperature of at least 150 DEG C at the point in time at which the thermoplastic is introduced.

Description

technical field [0001] The invention relates to a method of manufacturing a dental molding according to the preamble of claim 1 . Background technique [0002] Methods for producing dental moldings by injection molding or injection methods are known in the field of dental engineering. [0003] One such method is disclosed in German Patent Publication No. 1779542. In order to achieve a uniform filling of the mold cavity of the cuvette and to improve the performance of the final denture by avoiding swirls in the final denture structure, it is proposed to liquefy the thermoplastic located in the sleeve and to And very quickly (fractions of a second) the thermoplastic is injected into the mold cavity of the molding tank which is tempered to about 50 degrees Celsius. This very fast injection results in better filling of the mold cavity, but with complex shapes and long runners there is a recurring disadvantage of insufficient filling sites. Furthermore, it has been found that ...

Claims

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Application Information

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IPC IPC(8): A61C13/20
CPCA61C13/20A61C13/206
Inventor F·韦科雷E·弗雷施曼
Owner F·韦科雷
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