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Preparation method of novel zirconium dioxide all-ceramic pile/nail for dental restoration

A technology of zirconium dioxide and zirconium dioxide powder, which is applied in dentistry, dental prosthetics, dental implants, etc., can solve the problems of easy falling off of fillings, achieve excellent bonding effect, reduce tooth tissue damage, and avoid easy to be damaged. The effect of corrosion staining

Inactive Publication Date: 2017-04-26
AFFILIATED STOMATOLOGICAL HOSPITAL OF NANJING MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems that the fillings of large-area tooth defects are easy to fall off, and there are various defects in the reinforcement and retention of traditional metal nails or fiber posts. Defect) preparation method with zirconia all-ceramic post / nail

Method used

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  • Preparation method of novel zirconium dioxide all-ceramic pile/nail for dental restoration
  • Preparation method of novel zirconium dioxide all-ceramic pile/nail for dental restoration
  • Preparation method of novel zirconium dioxide all-ceramic pile/nail for dental restoration

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Embodiment 1

[0043] The preparation method of the zirconia all-ceramic post / nail for dental restoration of the present embodiment comprises the following steps:

[0044] 1) Use zirconium dioxide powder and polyvinyl butyral PVB as the powder for pile / nail production, prepare, mix, dry, and granulate in proportion, and the amount of polyvinyl butyral PVB to allow Zirconia powder can be bonded;

[0045] 2) Prepare a peg forming mold of fixed size;

[0046] 3) According to the predetermined size, zirconium rods of uniform specifications are formed. Considering the shrinkage rate of the zirconia ceramic block during sintering, the size of the ceramic block is correspondingly enlarged; the normal shrinkage rate is about 23%.

[0047] 4) Sintering the zirconium rods in a zirconia crystallization furnace;

[0048] 5) Zirconia rods with the required diameter for precision machining by a centerless grinder;

[0049] 6) The taper required for processing the head of the pile / nail by the hollow gri...

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Abstract

The invention provides a preparation method of a novel zirconium dioxide all-ceramic pile / nail for dental restoration. The zirconium dioxide all-ceramic pile / nail has a cone-shaped head, a cylindrical middle section, and a flat cuboid like tail. The preparation method of the zirconium dioxide all-ceramic pile / nail includes the steps of: 1) taking zirconium dioxide powder and polyvinyl butyral PVB as the powder for pile / nail production, conducting proportional dosing, mixing, drying and granulation, and controlling the PVB at a dosage of enabling zirconium dioxide powder bonding; 2) preparing a pile / nail molding die with a fixed size; 3) conducting pressing according to a predetermined size to form zirconium rods with unified specification; and 4) subjecting the zirconium rods to sintering molding in a zirconium dioxide crystallization furnace. The method provided by the invention is a more precise and efficient zirconium dioxide all-ceramic pile / nail preparation method, and provides a high strength, anticorrosion and durable material for dental repair. The obtained zirconium dioxide all-ceramic pile / nail is convenient for manufacturing and use, and has excellent biocompatibility and aesthetic effect, thus being an ideal new dental restoration material.

Description

technical field [0001] The invention relates to a preparation method of medical equipment, in particular to a preparation method of a dental restoration material, in particular to a novel preparation method of a zirconia all-ceramic post / nail for dental restoration. Background technique [0002] Due to dental caries or trauma caused by a large area of ​​tooth defect, due to the weak remaining tooth tissue, fillings are easily broken or fall off. The most commonly used clinical solution is to use metal nails or fiber posts to enhance the retention. The metal nail body is easily corroded by liquids such as saliva in the oral cavity and dentinal tubule fluid, which in turn causes discoloration of the tooth and restoration and loosening of the retaining screw, resulting in restoration failure. The strength of the fiber post is poor, the bonding effect with the tooth tissue and resin material is not clear, and it is easy to break, and the end of the fiber post is cylindrical, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C8/00B24C1/00C04B35/48C04B35/634
CPCA61C8/0004A61C8/0012B24C1/00C04B35/48C04B35/63472C04B2235/602
Inventor 于金华周洲于瑞阳陈亚辉
Owner AFFILIATED STOMATOLOGICAL HOSPITAL OF NANJING MEDICAL UNIV
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