阅读说明：本技术 一种金属烤瓷牙制备方法 (Preparation method of metal porcelain tooth ) 是由 杨贤利 于 2019-09-30 设计创作，主要内容包括：本发明公开了一种金属烤瓷牙制备方法：制备金属烤瓷牙内冠；对牙内冠表层堆塑遮色瓷后烘干并置于烤瓷炉内在900～910℃下真空烧结,得一次处理金属烤瓷牙；对一次处理金属烤瓷牙堆塑牙本质瓷后烘干并置于烤瓷炉内在925～935℃下真空烧结,得二次处理金属烤瓷牙；对二次处理金属烤瓷牙形态修整后在其表面堆塑釉质瓷并调色后烘干,烘干后的二次处理金属烤瓷牙置于烤瓷炉内在900～910℃下烧结,得金属烤瓷牙；其能够制备表面不含气泡的成品金属烤瓷牙。(The invention discloses a preparation method of a metal porcelain tooth, which comprises the following steps: preparing a metal porcelain tooth inner crown; after plastic-stacking and color-shading porcelain on the surface layer of the inner crown of the tooth, drying the inner crown of the tooth, and placing the inner crown of the tooth in a porcelain oven for vacuum sintering at 900-910 ℃ to obtain a primary treated metal porcelain tooth; stacking the plastic dentin porcelain on the primary treated metal porcelain tooth, drying, and placing in a porcelain oven for vacuum sintering at 925-935 ℃ to obtain a secondary treated metal porcelain tooth; after the shape of the secondary treatment metal ceramic tooth is finished, enamel porcelain is piled and molded on the surface of the secondary treatment metal ceramic tooth, the enamel porcelain is mixed with colors and then dried, and the dried secondary treatment metal ceramic tooth is placed in a ceramic oven to be sintered at 900-910 ℃ to obtain a metal ceramic tooth; it can prepare finished metal porcelain teeth without bubbles on the surface.)

1. The preparation method of the metal porcelain tooth is characterized by comprising the following steps:

step 1: preparing a metal porcelain tooth inner crown;

step 2: after plastic-stacking and color-shading porcelain on the surface layer of the inner crown of the tooth, drying the inner crown of the tooth, and placing the inner crown of the tooth in a porcelain oven for vacuum sintering at 900-910 ℃ to obtain a primary treated metal porcelain tooth;

and step 3: stacking the plastic dentin porcelain on the primary treated metal porcelain tooth, drying, and placing in a porcelain oven for vacuum sintering at 925-935 ℃ to obtain a secondary treated metal porcelain tooth;

and 4, step 4: and (3) after the shape of the secondary treatment metal ceramic tooth is trimmed, enamel porcelain is piled and molded on the surface of the secondary treatment metal ceramic tooth, the enamel porcelain is mixed with colors and then dried, and the dried secondary treatment metal ceramic tooth is placed in a ceramic oven to be sintered at 900-910 ℃ to obtain the metal ceramic tooth.

2. The method for preparing a metal porcelain tooth according to claim 1, wherein the drying in the step 2 is drying at 500-550 ℃ for 5-8 min.

3. The method for preparing a metal porcelain tooth according to claim 1, wherein after the dental coping with the color-masking porcelain piled and dried on the surface layer in the step 2 is placed in a porcelain oven, the porcelain oven is heated to a sintering temperature from 500 to 550 ℃ in a vacuum state at a heating rate of 60 to 65 ℃/min, and the sintering time is 13 to 15 min.

4. The method for preparing a metal porcelain tooth according to claim 1, wherein the drying in the step 3 is drying at 500-550 ℃ for 3-5 min.

5. The method for preparing a metal porcelain tooth according to claim 1, wherein after the metal porcelain tooth subjected to the primary treatment for stacking and molding dentin porcelain in the step 3 is placed in a porcelain oven, the temperature is raised to a sintering temperature from 500-550 ℃ in a vacuum state of the porcelain oven at a temperature rise rate of 50-55 ℃/min, and the sintering time is 13-15 min.

6. The method for preparing a metal porcelain tooth according to claim 1, wherein the drying in the step 4 is performed at 500-550 ℃ for 3-5 min.

7. The method for preparing a metal porcelain tooth according to claim 1, wherein after the second-treatment metal porcelain tooth subjected to morphological modification in the step 4 is placed in a porcelain oven, the porcelain oven is heated from 500 to 550 ℃ to a sintering temperature at a heating rate of 60 to 65 ℃/min, and the sintering time is 10 to 11 min.

Technical Field

The invention belongs to the technical field of artificial tooth preparation, and relates to a preparation method of a metal porcelain tooth.

Background

With the continuous development of scientific technology and the increasing living standard of people, the dental restorative material is more and more concerned by people. The metal porcelain tooth is a restoration made of low-melting porcelain and metal bottom material, has both metal strength and porcelain beauty, and is one of the most widely applied restorations in the current oral fixation restoration. The traditional preparation process of the metal porcelain tooth mainly comprises the following steps: manufacturing an inner crown → coating the color-shading porcelain on the inner crown and carrying out heat treatment → shape trimming → sintering a ceramic outer crown → dyeing → obtaining a metal porcelain tooth finished product. At present, plastic-stacked color-shading porcelain is stacked on a metal porcelain inner crown and then directly enters a porcelain oven for sintering, after cooling, the metal porcelain inner crown is taken out and plastic-stacked dentin porcelain is directly enters the porcelain oven for sintering, after cooling, the metal porcelain inner crown is taken out and then is subjected to shaping treatment, and then is subjected to dyeing treatment to obtain a finished product of metal porcelain tooth, wherein the plastic-stacked color-shading porcelain and dentin porcelain paste is coated on the surface of a tooth body; the surface of the manufactured finished metal porcelain tooth often generates a large amount of bubbles, so that porcelain can only be exploded and reworked, and manpower and materials are wasted.

Disclosure of Invention

The invention aims to provide a preparation method of a metal ceramic tooth, which can prepare a finished product of the metal ceramic tooth without air bubbles on the surface.

The invention is realized by the following technical scheme:

a preparation method of a metal porcelain tooth comprises the following steps:

step 1: preparing a metal porcelain tooth inner crown;

step 2: after plastic-stacking and color-shading porcelain on the surface layer of the inner crown of the tooth, drying the inner crown of the tooth, and placing the inner crown of the tooth in a porcelain oven for vacuum sintering at 900-910 ℃ to obtain a primary treated metal porcelain tooth;

and step 3: stacking the plastic dentin porcelain on the primary treated metal porcelain tooth, drying, and placing in a porcelain oven for vacuum sintering at 925-935 ℃ to obtain a secondary treated metal porcelain tooth;

and 4, step 4: and (3) after the shape of the secondary treatment metal ceramic tooth is trimmed, enamel porcelain is piled and molded on the surface of the secondary treatment metal ceramic tooth, the enamel porcelain is mixed with colors and then dried, and the dried secondary treatment metal ceramic tooth is placed in a ceramic oven to be sintered at 900-910 ℃ to obtain the metal ceramic tooth.

Further, in the step 2, the drying is carried out at 500-550 ℃ for 5-8 min.

Further, after the dental coping with the plastic-piled and color-shielded porcelain on the surface layer and dried in the step 2 is placed into a porcelain oven, the temperature of the porcelain oven is increased from 500-550 ℃ to the sintering temperature at a temperature increasing rate of 60-65 ℃/min under a vacuum state, and the sintering time is 13-15 min.

Further, in the step 3, the drying is carried out at 500-550 ℃ for 3-5 min.

Further, after the metal porcelain tooth subjected to the primary treatment of the plastic-piled dentin porcelain in the step 3 is placed into a porcelain oven, the temperature of the porcelain oven is increased from 500-550 ℃ to the sintering temperature at the temperature increasing rate of 50-55 ℃/min under the vacuum state, and the sintering time is 13-15 min.

Further, in the step 4, the drying is carried out at 500-550 ℃ for 3-5 min.

Further, after the second-treatment metal porcelain tooth trimmed in the shape in the step 4 is placed into a porcelain oven, the porcelain oven is heated to the sintering temperature from 500-550 ℃ at a heating rate of 60-65 ℃/min, and the sintering time is 10-11 min.

Compared with the prior art, the invention has the following beneficial technical effects:

the invention provides a preparation method of a metal porcelain tooth, which comprises the steps of stacking and molding color-shading porcelain on an inner crown of the tooth and drying the color-shading porcelain, wherein the drying temperature is lower than the sintering temperature of the color-shading porcelain, when the color-shading porcelain is not condensed and is not fused on the surface of the inner crown of the metal tooth, organic solvent and water contained in the color-shading porcelain can be gradually and completely evaporated, and meanwhile, the evaporation of the organic solvent and the water eliminates a liquid layer between the color-shading porcelain and the inner crown of the metal tooth, so that the color-shading porcelain can be in close direct contact with the inner crown of the metal tooth, and air between the color-shading porcelain and the inner crown of the metal tooth is discharged, so that air bubbles generated due to the evaporation of the organic solvent and the water cannot appear in the sintering process, and air bubbles generated due to the fact that the color-shading porcelain and the inner crown of the metal tooth are not in; the drying is also carried out before the sintering of the dentin porcelain and before the sintering of the enamel porcelain, so that the organic solvent and water contained in the dentin porcelain and the enamel porcelain are evaporated in time, the dentin porcelain and the primary treatment metal porcelain tooth and the enamel porcelain and the secondary treatment metal porcelain tooth can be in close contact, and the residual air between the dentin porcelain and the primary treatment metal porcelain tooth is exhausted.

Further, in the sintering process, the sintering furnace gradually rises to the sintering temperature from the stoving temperature of the tooth body under vacuum state, make hide the look porcelain appear self condense before and hide the look porcelain melt and attach and just can in time spill over the air that hides the inside of look porcelain and hide between look porcelain and the tooth inner crown before the metal tooth inner crown surface, make the inside and dentin porcelain of dentin porcelain and the air between the metal porcelain tooth of primary treatment all in time spill over, make the inside and enamel porcelain of enamel porcelain and the air between the metal porcelain tooth of secondary treatment all in time spill over, it has further avoided finished product metal porcelain tooth surface bubble to appear.

Drawings

FIG. 1 is a prior art metal porcelain tooth with a large number of bubbles;

FIG. 2 shows a metal porcelain tooth without bubbles prepared by the present invention.

Detailed Description

Specific examples are given below.