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A shade-opaque zirconia restoration

A restoration, zirconia technology, applied in dental prosthesis, compression mold cup, medical science and other directions, to achieve the effect of enhancing bonding strength, enhancing bonding performance, improving transparency and brightness

Active Publication Date: 2021-06-08
HANGZHOU ERRAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] To sum up, among all the existing methods, there is no method that takes into account the function of opacity while ensuring the strength of the zirconia restoration and achieving a good aesthetic restoration effect

Method used

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  • A shade-opaque zirconia restoration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] 1. Preparation of zirconia restorations

[0054] Method 1. The zirconia restoration is prepared by colloidal deposition layer-by-layer additive method. The green body is heated at a heating rate of 1-10°C / s to 120-200°C for 1-2 hours, and then dried at a heating rate of 1-10°C / s. 10-50℃ / s heating up to 700-1100℃, bisque firing in an oxidizing atmosphere, holding for 1-2 hours to obtain a bisque block, and then processing the bisque block to obtain a zirconia restoration by computer-aided design and computer-aided manufacturing bisque. Method 2. The zirconia restoration uses the colloidal deposition layer-by-layer additive method to prepare the biscuit block, and then processes the biscuit block to obtain the zirconia restoration body biscuit, and the zirconia restoration The green body is heated to 120-200°C at a heating rate of 1-10°C / s and dried for 1-2 hours, and then heated to 700-1100°C at a heating rate of 10-50°C / s. Hours, get zirconia restoration bisque.

[0...

manufacture example

[0078] Alumina-doped Y Partially Stabilized ZrO 2 The sol preparation method is: alumina (1-5mol%) doped with Y (2-6mol%) to partially stabilize ZrO 2 The example of sol manufacturing is as follows: The method of reverse dripping is used to prepare alumina-doped Y-stabilized ZrO 2 Sol, the prepared precipitant NH 4 HCO 3 (10-50%)+NH 3 ·H 2 O solution (50-90%) is placed in the Erlenmeyer flask, and the Erlenmeyer flask is placed in a magnetic stirrer or a constant temperature water bath reactor with stirring, and the prepared Al-containing 3+ , Y 3+ 、Zr 4+ The mother liquor includes zirconium hydroxide (ZrO(OH) 2 ·nH 2 O≥99%), zirconium oxychloride (ZrOCl 2 ·8H 2 O≥99%), zirconium nitrate (Zr(NO 3 ) 4 ·5H 2 One of O≥99%); Yttrium nitrate Y (NO 3 ) 3 ·6H 2 O, yttrium chloride (YCI 3 ·6H 2 One of O≥99.99%); aluminum chloride (AlCl 3 ≥99%), aluminum nitrate (Al(NO 3 ) 3 9H 2 One of O), slowly drop into the precipitant, and vigorously stir to make it fully rea...

Embodiment 1

[0097] Example 1. Abutment tooth A2 color restoration one

[0098] The white zirconia restoration body was dried at 200°C for 1 hour at a heating rate of 5°C / s. Then heat up to 1050°C at a heating rate of 10°C / s, bisque-fire in an oxidizing atmosphere, and keep warm for 2 hours to obtain bisque. The bisque was soaked in A2 staining solution and treated at 400°C for 10 minutes. Then process the coating opaque layer. If the patient’s abutment is deep or the tetracycline tooth or metal post core, the thickness of the zirconia crown is greater than 0.7mm, then light opaque treatment is adopted, and the above-mentioned opaque sol and opaque sol are used as the coating material One of mixtures, opaque pastes, opaque sols, and opaque powder mixtures, for example by mixing ZrO with a molar concentration of 1-10mol / L 2 -xH 2 O sol 90wt% + 10wt% AlN powder, add appropriate amount of deionized water, prepare a coating slurry with a solid phase amount of 5-20wt% by planetary ball milli...

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Abstract

The invention discloses a color-shielding zirconia restoration, which is formed by adding one or more layers of a dyed color-shielding layer, a coating color-shielding layer, and a color bonding layer on the tooth-wearing surface of the zirconia restoration. The invention ensures the strength of the zirconia restoration while taking into account the color-shielding function, retains the translucent jade texture of the zirconia restoration itself, and presents a good aesthetic restoration effect.

Description

technical field [0001] The invention relates to a zirconia restoration, in particular to a color-shielding zirconia restoration. Background technique [0002] In dental aesthetic restoration, a good visual effect not only requires the restoration to match the color of the natural tooth, but also requires the restoration to have a semipermeability similar to that of the tooth tissue. The optical texture of the common metal-based porcelain teeth in clinical practice is too rigid and lifeless. The reason is that the translucency of porcelain teeth is not consistent with that of natural teeth. Porcelain teeth are made of three kinds of porcelain powders with different transmittances: opaque porcelain, body porcelain, and enamel porcelain, which are layered and baked on the metal base. Changes in the thickness and opacity of each layer will affect the overall translucency of the restoration . [0003] Various zirconia high-transparency materials that have appeared on the market...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K6/818A61K6/84A61K6/831A61K6/15A61C13/08
CPCA61C13/0835A61K6/80A61K6/842A61K6/831A61K6/818A61K6/84A61K6/20C04B2235/6562
Inventor 李廷凯沈志坚赵武元
Owner HANGZHOU ERRAN TECH
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