阅读说明：本技术 一种氧化锆全瓷牙用比色片的制备方法 (Preparation method of zirconia full-ceramic tooth colorimetric sheet ) 是由 魏珊 于 2019-10-16 设计创作，主要内容包括：本发明涉及一种氧化锆全瓷牙用比色片的制备方法,包括以下步骤：切削氧化锆块,切削出基牙形的氧化锆基牙材料后,使用染色液浸染,烧结后制得基牙；切削氧化锆块,切削出牙冠形的氧化锆牙冠材料后,使用染色液和切端液对氧化锆牙冠材料进行内染和外染,烧结、上釉、再次烧结、抛光,即得牙冠；将所述牙冠内表面用粘结剂粘结于所述基牙上,即得色片。本发明制备方法与全锆修复体材料及染色工艺基本统一,本发明制备方法制备而成的比色片,颜色、光泽度以及通透度与全锆修复体及天然牙齿更为接近,显色效果稳定持久,色彩立体感强,比色精准度高,在色彩的传递与再现上能够更为准确。(The invention relates to a preparation method of a zirconia full-ceramic tooth colorimetric sheet, which comprises the following steps: cutting a zirconia block, cutting a zirconia-based tooth material in a basic tooth shape, dip-dyeing by using a dyeing solution, and sintering to obtain a basic tooth; cutting a zirconia block, after cutting a zirconia crown material in a crown shape, performing internal dyeing and external dyeing on the zirconia crown material by using a dyeing solution and a cutting end solution, sintering, glazing, sintering again, and polishing to obtain a crown; and adhering the inner surface of the dental crown to the abutment by using an adhesive to obtain the color chip. The color comparison piece prepared by the preparation method is more similar to the full-zirconium restoration and natural teeth in color, glossiness and permeability, and has stable and durable color development effect, strong color stereoscopic impression, high color comparison accuracy and more accurate color transmission and reproduction.)

1. The preparation method of the color matching sheet for the zirconia all-ceramic tooth is characterized by comprising the following steps of:

s1, preparing an abutment: cutting a zirconia block, cutting a zirconia-based tooth material in a basic tooth shape, dip-dyeing by using a dyeing solution, and sintering to obtain a basic tooth;

s2, preparing a dental crown: cutting a zirconia block, after cutting a zirconia crown material in a crown shape, performing internal dyeing and external dyeing on the zirconia crown material by using a dyeing solution and a cutting end solution, sintering, glazing, sintering again, and polishing to obtain a crown;

s3, preparing a color chip: and adhering the inner surface of the dental crown to the abutment by using an adhesive to obtain the color chip.

2. The method for preparing a colorimetric plate for zirconia all porcelain teeth according to claim 1, wherein the zirconia block is cut by CAD/CAM technology in steps S1 and S2.

3. The method for preparing a color matching sheet for full ceramic teeth of zirconia according to claim 1, wherein the sintering temperature is not more than 830 ℃ and the sintering time is 2-3min in step S1 and step S2.

4. The method for preparing a zirconia full porcelain tooth colorimetric plate according to claim 1, wherein the dip dyeing time in the step S1 is 5 to 20S.

5. The method for preparing a zirconia full porcelain tooth colorimetric plate according to claim 1, wherein the internal dyeing in step S2 is: coating the end cutting liquid on the cut end of the zirconia dental crown material, soaking the zirconia dental crown material in the dyeing liquid for 5-20s, taking out, drying and crystallizing.

6. The method for preparing the color comparison sheet for the all-ceramic zirconia teeth as claimed in claim 5, wherein the drying temperature is 100-.

7. The method for preparing the color matching sheet for the zirconia all-ceramic tooth according to claim 5, wherein the crystallization temperature is not more than 1450 ℃ and the crystallization time is 8.5 to 9 hours.

8. The method for preparing a zirconia full porcelain tooth colorimetric plate according to claim 1, wherein the external dyeing in step S2 is: and coating the dyeing solution on the outer surface of the internally dyed zirconia crown material, and coating the cut end solution on the cut end of the internally dyed zirconia crown material.

9. The preparation method of the zirconia full-ceramic tooth colorimetric chip as claimed in claim 1, wherein the dyeing solution comprises the following components in parts by weight: 1000 parts of deionized water, 6-85 parts of nitrate colorant, 40 parts of penetrant and 5 parts of indicator.

10. The method for preparing a color matching sheet for full-ceramic teeth of zirconia according to claim 9, wherein the ferric nitrate coloring agent is erbium nitrate, ferric nitrate; the penetrating agent is polyethylene glycol; the indicator is carmine.

Technical Field

The invention relates to a preparation method of a zirconia full-ceramic tooth colorimetric chip.

Background

The colorimetric plate plays a role in color transmission in the oral restoration, firstly, a doctor selects the colorimetric plate with the closest color according to the colorimetric plate, and then, a technician for manufacturing the restoration reproduces the color on the restoration. At present, the existing colorimetric piece is manufactured based on the porcelain tooth principle, the structure is a basal layer and a decorative layer, the color development effect is formed by compounding the color of the basal layer, the color of the decorative layer and glazing, the material and the color forming principle of the colorimetric piece are completely different from those of a zirconia restoration body, and deviation is easy to occur in two processes of color transmission and color reproduction, so that the existing colorimetric plate has defects in the all-porcelain restoration body, particularly in the zirconia restoration body.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a preparation method of a zirconia color comparison piece for all-ceramic teeth, which is basically unified with all-zirconium restoration materials and dyeing processes, and the prepared color comparison piece has the advantages of more similar color, glossiness and permeability to all-zirconium restoration and natural teeth, stable and durable color development effect, strong color third dimension, high color comparison precision and more accurate color transmission and reproduction.

The technical scheme of the invention is as follows:

a preparation method of a zirconia color matching sheet for full-ceramic teeth comprises the following steps:

s1, preparing an abutment: cutting a zirconia block, cutting a zirconia-based tooth material in a basic tooth shape, dip-dyeing by using a dyeing solution, and sintering to obtain a basic tooth;

s2, preparing a dental crown: cutting a zirconia block, after cutting a zirconia crown material in a crown shape, performing internal dyeing and external dyeing on the zirconia crown material by using a dyeing solution and a cutting end solution, sintering, glazing, sintering again, and polishing to obtain a crown;

s3, preparing a color chip: and adhering the inner surface of the dental crown to the abutment by using an adhesive to obtain the color chip.

Further, in steps S1 and S2, the zirconia block is cut by CAD/CAM technology.

Further, in step S1 and step S2, the sintering temperature is not more than 830 ℃, and the sintering time is 2-3 min.

Further, the padding time in step S1 is 5-20S.

Further, in step S2, the internal dyeing is: coating the end cutting liquid on the cut end of the zirconia dental crown material, soaking the zirconia dental crown material in the dyeing liquid for 5-20s, taking out, drying and crystallizing.

Furthermore, the drying temperature is 100-.

Furthermore, the crystallization temperature is not more than 1450 ℃, and the crystallization time is 8.5-9 h.

Further, in step S2, the external dyeing is: and coating the dyeing solution on the outer surface of the internally dyed zirconia crown material, and coating the cut end solution on the cut end of the internally dyed zirconia crown material.

Further, the dyeing solution comprises the following components in parts by weight: 1000 parts of deionized water, 6-85 parts of nitrate colorant, 40 parts of penetrant and 5 parts of indicator.

Further, the ferric nitrate coloring agent is erbium nitrate and ferric nitrate; the penetrating agent is polyethylene glycol; the indicator is carmine.

The invention has the following beneficial effects:

the invention selects the zirconia as the material of the colorimetric piece, is the same as the material used by the full-zirconium restoration body, and has the color, permeability and optical effect similar to those of natural teeth; the colorimetric tablet is formed by bonding the abutment and the dental crown, so that the glossiness of the full-zirconium restoration and the natural tooth is fully reduced, and the three-dimensional color development effect of the colorimetric tablet is endowed; the dental crown can simulate the gradual change characteristics of the color of the full-zirconium prosthesis and the natural tooth by carrying out internal dyeing and external dyeing on the dental crown by using the dyeing solution and the cutting end solution; the selected dyeing liquid has good permeability and short dyeing and permeating time, and the dyed color has good uniformity and glossiness and stable and durable dyeing effect, and does not influence the permeability and optical effect of the zirconia material. The color, the glossiness and the permeability of the colorimetric tablet prepared by the preparation method are closer to those of the full-zirconium restoration and natural teeth, the developing effect is stable and durable, the color stereoscopic impression is strong, the colorimetric accuracy is high, errors in the color transmission and reproduction process are reduced, and the accuracy of the color effect of the full-zirconium restoration is ensured.

Detailed Description

The present invention will be described in detail with reference to examples, which are only preferred embodiments of the present invention and are not intended to limit the present invention.