Dental prosthetic material and preparation method thereof

A restoration material and dental technology, applied in the field of dental restoration materials and their preparation, can solve the problems of great irritation, difference, and greater pain for patients, and achieve the effects of simple process, mild conditions and cheap raw materials

Active Publication Date: 2013-10-09
杭州蝾螈科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method also has disadvantages: 1. There is a large difference in the composition of the drug and dentin, and the desensitization effect achieved by the method of protein coagulation is not durable; 2. Sulfonol, thymol, silver nitrate ammonia, 75% Desensitization drugs such as sodium fl

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  • Dental prosthetic material and preparation method thereof
  • Dental prosthetic material and preparation method thereof
  • Dental prosthetic material and preparation method thereof

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Embodiment 1

[0029] Embodiment 1, the preparation of dental restorative material

[0030] Take isolated human molars or wisdom teeth, cut off the crown part with a low-speed diamond cutter, and then cut the remaining part into thin slices of 1-2 mm. The dentin was heated in a water bath with 0.3 mol / L EDTA solution at a temperature of 60° C. for 6 hours, and the residual solution was washed away with deionized water for use.

[0031] Weigh, 3.936g Ca(NO 3 ) 2 4H 2 O, add about 80mL of deionized water, electromagnetically stir to dissolve, 100mL volumetric flask is constant volume, obtains calcium ion solution, and its molar concentration is 0.167mol / L. Weigh 1.725g KH 2 PO 4 , and 0.185gNH 4 F, electromagnetic stirring to dissolve, 100mL volumetric flask to constant volume, obtain dihydrogen phosphate-fluoride ion aqueous solution, in this aqueous solution, the molar concentration of dihydrogen phosphate is 0.15mol / L, and the molar concentration of fluoride ion is 0.05mol / L.

[0032...

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Abstract

The invention discloses a dental prosthetic material and a preparation method thereof. The method comprises the following steps of (1) immersing dentin in an EDTA aqueous solution; and (2) putting the dentin treated by the step (1) in a sodium hyaluronate-calcium nitrate hydrogel, adding a dihydrogen phosphate ion and fluoride ion aqueous solution after standing; and reacting to obtain the dental prosthetic material, wherein the sodium hyaluronate-calcium nitrate hydrogel is a mixture of sodium hyaluronate and calcium nitrate aqueous solutions. With the preparation method provided by the invention, a dense dental prosthetic material with a bionic structure analogous to human enamel is grown on the surface of the isolated human dentin directly under an environment similar to human physiological conditions (37 DEG C, atm, pH6.0) through a simple chemical method. The film dental prosthetic material has an extremely similar structure to that of natural human enamel and has apatite hexagonal prism crystals and enamel crystal column microstructures. Mechanical properties of the dental prosthetic material are between that of natural human enamel and that of the dentin.

Description

technical field [0001] The invention relates to a dental restorative material and a preparation method thereof. Background technique [0002] Dentin constitutes the main part of the tooth body. It is located in the inner layer of enamel and cementum, and is also the side wall of the pulp cavity and root canal. It is light yellow in color. Among them, minerals account for about 65% to 75%, organic matter accounts for 20%, and the remaining 5% to 10% is water, so the mineralization is not as good as enamel, but it has greater elasticity than enamel. The average microhardness is about 1 / 5 of that of enamel, but the hardness at the junction of the two is higher, about 3 times that of the proximal medullary end, which can enhance the support for the enamel column. [0003] If you observe with a microscope, you can see that there are many thin tubes arranged regularly in the dentin, called dentinal tubules, and there are nerve fibers in the tubes. When the dentin is exposed, it c...

Claims

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Application Information

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IPC IPC(8): A61K6/097A61K6/04A61K6/033A61K6/838A61K6/898
Inventor 陈海峰梅域城
Owner 杭州蝾螈科技有限公司
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