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Organic-inorganic nanocomposite dental crown and 3D subtraction preparation method thereof

A technology of inorganic nano and dental crowns, applied in the fields of medical science, tissue regeneration, prosthesis, etc., can solve the problems of heavy medical treatment burden for patients, difficult processing, long processing cycle, etc., achieve good biocompatibility, easy regeneration Processing, excellent toughness and wear resistance

Inactive Publication Date: 2018-02-09
浙江美加华医疗技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology has been widely used in the machining of metal-ceramic crowns and all-ceramic crowns. However, due to the difficulty of processing this material, it usually needs to be sent to an external processing workshop for processing, so the processing cycle is long, and the crown Once it is formed in the dental clinic, it can only be adjusted microscopically, and it cannot be well adapted on site according to the needs of the patient, thus bringing a great burden to the patient.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1:20nm zirconia powder (75%)+UDMA photocurable resin (25%)

[0021] According to the weight ratio, the zirconia nano-powder (75%) and the UDMA photocurable resin (25%) of 20nm through the silane coupling agent surface treatment are carried out nanoscale mixing, then adopt the ultraviolet light of 350nm to fully solidify the mixture, and It is made into a cylindrical block material, and finally, according to the computer-aided design (CAD) model or computer tomography (CT) data of the patient's teeth, the cylindrical block material is intelligently cut in 3D to customize an organic-inorganic composite crown.

Embodiment 2

[0022] Embodiment 2:20nm zirconia powder (75%)+Bis-GMA photocurable resin (25%)

[0023] According to the weight ratio, 20nm zirconia nanopowder (75%) and Bis-GMA photocurable resin (25%) are mixed at the nanometer level through silane coupling agent surface treatment, and then the mixture is fully cured by 350nm ultraviolet light , and made into a cylindrical block material, and finally according to the patient's tooth computer-aided design (CAD) model or computer tomography (CT) and other data, the cylindrical block material is 3D subtractive and intelligently cut to customize organic-inorganic composite teeth. crown.

Embodiment 3

[0024] Embodiment 3: 20nm zirconia powder (75%)+TEGDMA photocurable resin (25%) with the 20nm zirconia nanopowder (75%) and TEGDMA photocurable resin (25%) through silane coupling agent surface treatment according to weight ratio %) for nano-scale mixing, and then use 350nm ultraviolet light to fully cure the mixture, and make it into a cylindrical block material, and finally according to the computer-aided design (CAD) model or computer tomography (CT) data of the patient's teeth The cylindrical block material is subjected to 3D subtractive intelligent cutting to customize an organic-inorganic composite crown.

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Abstract

The invention relates to an organic-inorganic nanocomposite dental crown and a 3D subtraction preparation method thereof. The composite dental crown comprises the following raw materials: an organic matrix material and an inorganic filler. The organic matrix material is mixed with inorganic nanoparticles; then the obtained mixture is fully cured with ultraviolet rays so as to obtain a cylindricalblock dental crown material; and then the cylindrical block dental crown material is subjected to 3D subtraction intelligent customization so as to prepare the organic-inorganic composite dental crown. The composite dental crown prepared in the invention has the advantages of good biocompatibility, excellent strength, toughness and wear resistance, applicability to CT / MRI examination, a transparent color, restoration of natural and beautiful tooth appearance, easiness in re-processing, etc.; and a processing method for the dental crown is fast and convenient.

Description

technical field [0001] The invention relates to the field of dental materials, in particular to an organic-inorganic nanocomposite crown and a 3D subtractive preparation method for dental restoration and implantation. Background technique [0002] Dental crown materials are mainly divided into two categories: metal-ceramic teeth and all-ceramic teeth. Metal-ceramic teeth can be divided into non-precious metal and precious metal-ceramic teeth. The main disadvantages are that they cannot be examined by CT / MRI and have poor aesthetics, and some non-precious metal porcelain teeth have poor biocompatibility with the human body. The main disadvantage of all-ceramic teeth is that they are relatively brittle, prone to chipping, and expensive. Moreover, the commonality of these two types of dental crown materials is that the current processing technology is complicated, the processing difficulty is high, and the technical requirements for technicians are relatively high. Usually, it...

Claims

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Application Information

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IPC IPC(8): A61L27/44A61L27/50
CPCA61L27/446A61L27/50A61L2430/12
Inventor 顾凤龙周平乐
Owner 浙江美加华医疗技术有限公司