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Wet forming production method of dental all-ceramic restoration

A production method, wet forming technology, applied in the direction of dentures, etc., can solve problems such as failure of prosthesis restoration, reduction of long-term stability and reliability of prosthesis, too thin prosthesis cracking, etc., to achieve reduced cracking, high reliability, The effect of a uniform and coherent structure

Active Publication Date: 2015-03-25
HANGZHOU ERRAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the grinding process, cracking of the too thin part of the restoration may occur due to vibration, especially at the edge of the restoration; manual grinding will introduce local stress and microscopic defects on the outer surface of the restoration, reduce the long-term stability and reliability of the restoration, and even cause Premature fracture of the restoration, restoration failure

Method used

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  • Wet forming production method of dental all-ceramic restoration
  • Wet forming production method of dental all-ceramic restoration
  • Wet forming production method of dental all-ceramic restoration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] For the case and restoration plan: a large area of ​​the posterior tooth is missing, and the posterior zirconia single-crown all-ceramic restoration is made.

[0045] A wet forming manufacturing method for a dental all-ceramic restoration, as attached image 3 shown, including the following steps:

[0046] Step 1: Carry out routine tooth preparation according to the tooth preparation standard of zirconia all-ceramic restoration: the occlusal surface is ground to 1.0 mm to 1.5 mm, the axial surface is ground to 0.8 to 1.0 mm, and the cervical shoulder width is 0.3 to 0.5 mm. The degree of polymerization on the axial surface is 6-8°C, and the corners of each point and line are round and smooth.

[0047] Step 2: Use the 3Shape intraoral scanner TROIS to directly scan the upper and lower dentition to obtain an optical model of the dentition.

[0048] Step 3: Using the dentition optical model obtained in Step 2 as the data source, through the dental restoration design soft...

Embodiment 2

[0055] According to the case and restoration plan: a large area of ​​tooth defect in the posterior teeth, a zirconia-alumina composite single-crown all-ceramic restoration of the posterior teeth was made.

[0056] A wet forming manufacturing method for a dental all-ceramic restoration, as attached image 3 shown, including the following steps:

[0057] Step 1: Carry out routine tooth preparation according to the tooth preparation standard for all-ceramic restorations made of zirconia-alumina composite materials: 1.0 mm to 1.5 mm on the occlusal surface, 0.8 to 1.0 mm on the axial surface, and the width of the cervical shoulder 0.3 ~ 0.5mm, axial surface polymerization degree 6 ~ 8 ℃, and the corners of each point and line are round and smooth.

[0058] Step 2: Take clinical impressions of the upper and lower dentition, use the 3Shape desktop scanner D810 to scan the dentition impression directly, and use the dental restoration design software 3Shape dental CAD system DentalDe...

Embodiment 3

[0066] According to the case and restoration plan: the posterior teeth have large tooth defects, and the posterior teeth are made of aluminum oxide single-crown all-ceramic restorations.

[0067] A wet forming manufacturing method for a dental all-ceramic restoration, as attached Figure 4 shown, including the following steps:

[0068] Step 1: Carry out routine tooth preparation according to the tooth preparation standard of alumina all-ceramic restorations: 1.0mm-1.5mm of the occlusal surface is removed, 0.8-1.0mm of the axial surface is removed, and the cervical shoulder width is 0.3-0.5mm. The degree of polymerization on the axial surface is 6-8°C, and the corners of each point and line are round and smooth.

[0069] Step 2: Use the 3Shape intraoral scanner TROIS to directly scan the upper and lower dentition to obtain an optical model of the dentition.

[0070] Step 3: Using the dentition optical model obtained in Step 2 as the data source, through the dental restoration...

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Abstract

The invention discloses a wet forming production method of a dental all-ceramic restoration. According to the method, a prefabricated ceramic block is not used for processing, and in production processes, a support column is not required for fixing the ceramic block and the restoration, so that the process steps of manually removing the support column by milling to separate the formed restoration and the surrounding ceramic block and burnishing and polishing the excessively rough outer surface of the restoration caused by removing the support column by milling are avoided, and the risks of disintegration of the restoration and premature fracture failure are further reduced. A ceramic hard biscuit for milling processing is produced by adopting a wet forming technology, and compared with the ceramic block which is formed by dry pressing and partially sintered, the microscopic structure is more uniform and contains fewer particle packing defects. Through milling processing of the ceramic hard biscuit which is not sintered, the surface finish which is higher than that obtained by processing the ceramic block which is partially sintered can be obtained. The dental all-ceramic restoration produced by adopting the technical scheme of the invention has the advantages of no connection points for the support column on the outer surface, no partial milling marks and ceramic cracks, bright and clean surface, uniform and consistent structure and high reliability.

Description

technical field [0001] The invention relates to the technical field of dental ceramic material production, in particular to a wet forming production method of a dental all-ceramic restoration. Background technique [0002] In the 1970s, French dentist Duret introduced computer-aided design and computer-aided production (CAD / CAM) technology into the dental field. The principle is: use the photoelectric principle to collect information on the three-dimensional shape of the tooth preparation with the photoelectric sensor to form an "optical impression"; then input the optical impression into the computer, and use the software to perform three-dimensional reconstruction to obtain an "optical working model"; The prototype of the dental restoration is designed on the optical working model, and after careful modification, a "computer wax-up" is formed; finally, the computer wax-up is input into the CNC milling and grinding machining center as a control parameter, and the pre-fixed ...

Claims

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Application Information

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IPC IPC(8): A61C13/083
Inventor 沈志坚赵静
Owner HANGZHOU ERRAN TECH
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