Preformed dental crown and preparation process thereof

A dental crown, prefabricated technology, applied in dental preparations, dentistry, dental prostheses, etc., can solve the problems of inability to chew hard food, wear resin teeth, affect the patient experience, etc., to improve biological adaptability, wear resistance, etc. The effect of improving performance and improving biological fitness

Active Publication Date: 2020-03-13
BEIJING DONGBO PNEUMATIC TOOL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when it is used as the raw material of resin teeth, the patient will continue to wear the resin teeth when chewing; and because it is a polymer material, the patient cannot chew hard foods such as nuts and bones after installing resin teeth, which affects the use of patients to experience

Method used

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  • Preformed dental crown and preparation process thereof
  • Preformed dental crown and preparation process thereof
  • Preformed dental crown and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The raw materials used are shown in Table 1 below

[0024] Table 1

[0025]

[0026] Nano SiO 2 Before mixing with the resin matrix, it is necessary to use the silane coupling agent KH-570 for surface treatment, by changing the SiO 2 The original properties of the surface can reduce nano-SiO 2 The tendency to agglomerate, increase its dispersibility in the resin organic phase, such as unmodified nano SiO 2 The size of agglomerates is mainly distributed between 150~600nm, after modification, nano SiO 2 The size of the agglomerates is mainly distributed between 50~150nm, indicating that nano SiO 2 The hydroxyl groups on the surface are replaced by organic functional groups, reducing the tendency to agglomerate. (Similarly, suitable for TiO 2 )

[0027] The comprehensive performance of the composite material has been significantly improved.

[0028] The operation process is as follows: Nano SiO 2 And TiO 2 Add it to the mixed solution of absolute ethanol / water with a volume ratio ...

Embodiment 2

[0034] The raw materials used are shown in Table 2 below

[0035] Table 2

[0036]

[0037]

[0038] Nano SiO 2 Before mixing with the resin matrix, it is necessary to use the silane coupling agent KH-570 for surface treatment, by changing the SiO 2 The original properties of the surface can reduce nano-SiO 2 The tendency to agglomerate increases its dispersibility in the resin organic phase.

[0039] The operation process is as follows: Nano SiO 2 And TiO 2 Add it to the mixed solution of absolute ethanol / water with a volume ratio of 2:1 and fully disperse it under high-speed shearing at 3500r / min. After the dispersion is uniform, add a 30% mass fraction KH-570 solution and use The pH value of the oxalic acid solution was adjusted to about 4, the shear rate was adjusted to 2000r / min, and the reaction temperature was 70°C. After 3 hours of reaction, the stirring was stopped. The obtained nano suspension was suction filtered, and the filter cake was ultrasonically cleaned with a mixt...

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Abstract

The invention belongs to the field of dental polymer application, and provides a preformed dental crown composed of resin, glass fiber and a filler, and provides a preparation process of the preformeddental crown. The prepared preformed dental crown is more suitable for occlusion than commercially available preformed dental crowns. After compounding, mechanical properties are greatly increased, the appearance of the material is improved, and the corresponding biocompatibility is improved. Meanwhile, costs of the raw materials and the production process are reduced, so that the price of the material after compounding is also lower.

Description

Technical field [0001] The invention belongs to the field of dental polymer applications, and specifically relates to a preformed tooth crown and a preparation process thereof [0002] technical background [0003] At present, the prefabricated dental crowns on the market mainly include zirconia and stainless steel teeth. Zirconia teeth and stainless steel teeth are expensive and have poor biocompatibility, which can easily cause allergic symptoms. There is also a class of resin dental products on the market, mainly made of polymethyl methacrylate or its modified copolymer by injection molding or hot pressing. Polymethyl methacrylate or PMMA, commonly known as plexiglass, is the best and different variety among synthetic transparent materials so far. However, when it is used as a raw material for resin teeth, patients will continue to wear resin teeth when chewing; and because it is a polymer material, patients cannot chew hard foods such as nuts and bones after installing resin t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/891A61K6/76A61K6/71C04B26/14
CPCC04B26/14C04B14/062C04B14/305C04B14/308
Inventor 任宏飞高静郑燕冰
Owner BEIJING DONGBO PNEUMATIC TOOL CO LTD
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