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Ceramic abutment for dental implant and manufacturing method for ceramic abutment

A manufacturing method and technology of porcelain abutments, applied in the fields of implantology, medical science, dentistry, etc., can solve problems such as difficulty in adapting to individual requirements of patients, inability to use prefabricated abutments, complex manufacturing process, etc., to eliminate structural defects, Realize the effect of simple design and production process

Inactive Publication Date: 2012-02-22
王培志 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the prefabricated abutment is a finished abutment. After it is manufactured in the factory, the restoration doctor will make appropriate adjustments to meet the needs of most clinical patients, but this kind of abutment is difficult to adapt to the individual requirements of patients; while the customized abutment is Personalized abutments, in special cases, patients cannot use prefabricated abutments, and can only use computer-aided design and manufacturing technology to customize personalized abutments according to their specific conditions
The manufacturing process of these two abutments is complicated and the cost is high, and it is difficult for ordinary patients to afford the high cost

Method used

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  • Ceramic abutment for dental implant and manufacturing method for ceramic abutment
  • Ceramic abutment for dental implant and manufacturing method for ceramic abutment
  • Ceramic abutment for dental implant and manufacturing method for ceramic abutment

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The basic structure of the porcelain abutment for oral implantation in this embodiment is as follows: figure 1 As shown, it includes a base 1 with a countersunk through hole, and a central countersunk screw 5 with an external thread matching the threaded hole of the implant 6 placed in the jawbone is installed in the countersunk through hole; the lower end of the base 1 has an embedded implant The reduced-diameter adapter ring 4 in the body 6 has a protruding edge extending outward in the middle; the outer circle of the upper part of the base 1 is covered with a metal bottom layer 2, and the bottom end of the metal bottom layer 2 stretches out along the upper surface of the protruding edge, and the metal bottom layer 2 The exterior is covered with a cast porcelain layer 3 , and there is color-shielding porcelain between the metal bottom layer 2 and the cast porcelain layer 3 ; the shape of the cast porcelain layer 3 matches the concave hole at the bottom of the porcelain...

Embodiment 2

[0043] Make a wax mold and sprue that match the shape of the metal bottom layer on the universal castable abutment, and fix it in the casting ring, pour the embedded material mixture into the casting ring, let it stand for 30 minutes at room temperature, and the mixture solidifies into an embedded body; the embedded body is roasted at 880 ° C for 40 minutes, the wax mold is melted and the wax liquid is poured out, the roasted embedded body is sent to a casting machine, and gold alloy is put into it for casting, and the condition is 1280 At ℃, cast at 400 rpm for 30s, cool, remove the embedding material, and obtain a base coated with the metal bottom layer; pre-treat the metal bottom layer, the method is: use alumina with a diameter of 120 μm to sandblast under a pressure of 2.5 Pa 3s, vacuum oxidation at 930°C for 5 minutes, after oxidation, put it into the Arurocid solution (0.17g / ml) produced by Bego Company in Germany and etch it for 15 minutes; Carry out vacuum sintering i...

Embodiment 3

[0045] Make a wax model of the metal bottom layer on the universal castable abutment, fix the base in the casting ring, pour the embedded material mixture into the casting ring, let it stand for 30 minutes at room temperature, and the mixed solution solidifies into an embedding body; The embedded body is roasted in a self-controlled high-temperature roasting furnace at a temperature of 920°C for 55 minutes. The wax mold is melted and the wax liquid is poured out. The roasted embedded body is sent to a casting machine and gold alloy is put into it for casting. The condition is 1320°C , cast at 400 rpm for 30s, cool, remove the embedding material, and obtain a base coated with the metal bottom layer; pretreat the metal bottom layer, the method is: use 120μm diameter alumina sandblasting for 3s under 3Pa pressure, 970℃ Vacuum oxidation at high temperature for 5 minutes, after oxidation, put it into the Arurocid solution (0.17g / ml) produced by Bego, Germany, and etch it for 15 minu...

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Abstract

The invention relates to a ceramic abutment for a dental implant. The ceramic abutment comprises a substrate with a countersunk head through hole, wherein a central countersunk head screw of which the external threads are matched with an implant threaded hole is formed in the countersunk head through hole; a reducer connection ring is arranged at the lower end of the substrate; a bulged edge which extends outwards is arranged on the middle part of the substrate; a metal bottom layer is wrapped on an excircle of the upper part of the substrate; the bottom end of the metal bottom layer expands outwards along the upper surface of the bulged edge; a casting ceramic layer is wrapped outside the metal bottom layer; and the appearance of the casting ceramic layer is matched with that of a concave hole at the bottom of a ceramic crown. A manufacturing method comprises the following steps of: manufacturing a metal bottom layer wax mold and a sprue on the substrate, fixing the metal bottom layer wax mold and the sprue in a casting ring, and pouring embedding material mixed liquid into the casting ring for embedding; roasting an embedding body, melting the wax mold, pouring wax liquid, melting a metal alloy, pouring the molten metal alloy into an embedding body cavity from the sprue, and clearing an embedding material after casting to obtain the substrate wrapped with the metal bottom layer; manufacturing a wax mold of which the shape is matched with that of the casting ceramic layer and a sprue, fixing the wax mold and the sprue in the casting ring, and pouring the embedding material mixed liquid into the casting ring for embedding; roasting an embedding body, melting the wax mold, pouring wax liquid, melting casting ceramic, pouring the molten casting ceramic into a cavity of the roasted embedding body from the sprue, and clearing an embedding material after casting to obtain an initial finished product; and polishing the initial finished product and modifying.

Description

technical field [0001] The invention relates to an oral medical device and a manufacturing method thereof, in particular to a porcelain abutment for oral implantation and a manufacturing method thereof, belonging to the technical field of dental implantation. Background technique [0002] With the increasing maturity of modern dental implant technology, dental implant restoration has been widely used clinically and has become one of the important methods for repairing dentition defect and loss. Currently existing implant systems are generally of a two-stage type, namely consisting of an implant body and an abutment. The abutment is an implant denture, an important part that connects the implant implanted in the jawbone and the functional superstructure, penetrates the gingival tissue, and plays an important role in the aesthetic effect of the implant denture. Most of the traditional abutments are made of metal, and their light transmission and aesthetic performance are diff...

Claims

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Application Information

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IPC IPC(8): A61C8/00A61C13/08
Inventor 王培志夏露光寒冰王洁许小会
Owner 王培志
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