Dental repair material and preparation method thereof
A restorative material and dental technology, applied in the field of biomaterials for dental restoration, can solve problems such as limited application, different physical and chemical properties, and poor biocompatibility, and achieve the effect of cheap raw materials, simple process, and mild conditions
Inactive Publication Date: 2016-11-09
PEKING UNIV
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Problems solved by technology
The disadvantages of this method are: 1. The physical and chemical properties of resin, alloy, ceramics and other materials are different from those of the tooth itself, and the biocompatibility is not good
However, PEO is a sol under near-physiological conditions, which limits its clinical application
Method used
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Embodiment 1
[0041] Embodiment 1, preparation of dental restorative material:
[0042] 1) Preparation of enamel regeneration substrate: Take isolated human molars or wisdom teeth (provided by Peking University Medical Dental Center), lightly grind the enamel surface with a low-speed diamond cutting machine saw blade, and then vertically cut tooth slices along the longitudinal axis to obtain The enamel was treated with 37% phosphoric acid aqueous solution for 30 seconds, the residual acid solution was washed away with deionized water, and then placed in a plasma surface processor for 1 minute and taken out as the enamel regeneration substrate.
[0043] 2) Preparation of xanthan gum hydrogel: a series of mass (0.10g, 0.20g, 0.30g, 0.40g) xanthan gum, 8mL Ca(NO 3 ) 2 Aqueous solution and 7.2mL deionized water were mixed to obtain a mixed solution, and the mixed solution was heated in a microwave oven until the solution boiled and then taken out directly to obtain calcium nitrate hydrogel; th...
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The invention discloses a dental repair material and a preparation method thereof. The preparation method includes the following steps that 1, enamel or dentine or a titanium sheet is soaked in a phosphoric acid aqueous solution or a mixed aqueous solution of hydrogen peroxide and phosphoric acid, and the treated enamel or dentine or titanium sheet is obtained; 2, calcium nitrate hydrogel containing xanthan gum powder and an aqueous solution of phosphate ions and fluorine ions are mixed to obtain a mixed solution, the treated enamel or dentine or titanium sheet is soaked in the mixed solution for a reaction, and the dental repair material can be obtained. The dense dental repair material with a human enamel bionic structure is grown in an environment similar to the physiological conditions of the human body. The dental repair material has hydroxyapatite hexagonal prism crystals and enamel crystalline pillar microstructures, and the mechanical property of the dental repair material is similar to that of natural human enamel. According to the preparation method, conditions are mild, the process is simple, and raw materials are cheap; the dental repair material has clinical application value, is expected to replace an existing dental repair material to repair enamel damage caused by saprodontia or other dental diseases and can also serve as a pit and fissure sealing material for saprodontia prevention.
Description
technical field [0001] The invention belongs to the field of biological materials for dental restoration, and in particular relates to a dental restoration material and a preparation method thereof. Background technique [0002] In mature tooth enamel, apatite accounts for 95%, protein and lipid account for about 1%, and water accounts for 4%. The minerals in the glaze column are calcium and phosphorus-containing hydroxyapatite (HAP, Ca 10 (P0 4 ) 6 (OH) 2 ) mainly, pure hydroxyapatite belongs to the hexagonal crystal system, and the apatite in the enamel is not pure hydroxyapatite crystal, but also contains 2% to 4% carbonate and 1% non-calcium metal, mainly including trace amounts Na + 、K + , Zn 2+ 、Sr 2+ , Pb 2+ 、Ag + Wait. [0003] And dental caries is a kind of very common oral cavity disease, there are at least 3,000,000,000 people in the world suffering from dental caries, accounting for about 50% of the world's total population. Since dental caries is a c...
Claims
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IPC IPC(8): A61K6/033A61K6/097A61K6/838A61K6/898
CPCA61K6/838A61K6/898
Inventor 陈海峰吉庆欢
Owner PEKING UNIV