A method for repairing damaged tooth enamel by coating dense layers of metal oxides

A technology of tooth enamel and oxide, applied in dentistry, pharmaceutical formulations, dental preparations, etc., to achieve the effect of simple and easy-to-obtain raw materials, restore mechanical properties, restore hardness and modulus

Active Publication Date: 2020-09-18
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prior art has not yet found a simple and convenient method to uniformly grow a layer of closely connected metal oxide layer on the surface of damaged enamel to achieve the purpose of repairing damaged enamel

Method used

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  • A method for repairing damaged tooth enamel by coating dense layers of metal oxides
  • A method for repairing damaged tooth enamel by coating dense layers of metal oxides
  • A method for repairing damaged tooth enamel by coating dense layers of metal oxides

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation method of zirconia restoration layer with tight connection with tooth enamel

[0036] In the first step, add 100 mL of distilled water to the beaker, stir in a water bath at 25°C for 10 minutes until the temperature is stable, add Tris / concentrated HCl buffer reagent, in which Tris is 0.848 g, concentrated HCl is 465 microliters, and the reaction pH is maintained at about 7.5 ;

[0037] In the second step, add 14 mg of ZrOCl to the solution prepared in the first step 2 2H 2 O powder, stir at 10-25°C for 10 minutes until completely dissolved ( figure 1 );

[0038] The third step is to slice the damaged enamel to be repaired ( figure 2 ) placed in the solution prepared in the second step ( figure 1 ), and continued to stir for 3h to obtain enamel coated with zirconia precursor;

[0039] The fourth step is to place the enamel coated with the zirconia precursor obtained in the third step in a hydrothermal reaction kettle with 10mL of polytetrafluoroethyle...

Embodiment 2

[0042] Preparation method of titanium oxide restoration layer with tight connection with enamel

[0043] In the first step, add 10mL of distilled water and 90mL of ethylene glycol into the beaker, stir in a water bath at 20°C for 10 minutes until the temperature is stable, add glycine / concentrated hydrochloric acid buffer pair, in which glycine is 0.376g, concentrated HCl is 140 microliters, The reaction pH was maintained at around 3.0;

[0044] In the second step, add 25 microliters of TiCl to the solution prepared in the first step 4 Liquid, stir at 25°C for 10 minutes until completely dissolved;

[0045] In the third step, the damaged enamel slice to be repaired is placed in the solution prepared in the second step, and continuously stirred for 4 hours to obtain the enamel coated with the titanium oxide precursor;

[0046] The fourth step is to place the titanium oxide precursor-coated enamel obtained in the third step in a hydrothermal reaction kettle with 10mL of polyte...

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Abstract

The invention relates to a preparation method of a dense metal oxide thin layer coated on the surface of tooth enamel, in particular to a controllable preparation of a thin metal oxide layer closely connected with damaged tooth enamel. Using readily available metal salts and buffer solutions as raw materials, the growth of metal oxides on the surface of damaged enamel is promoted, and a thin layer of metal oxides that is closely connected with damaged enamel is prepared to realize the healing of damaged enamel. repair. The specific method is (1) prepare a buffer solution with a target pH at room temperature, and add an appropriate amount of metal salt; (2) then add the damaged enamel to the above solution, and stir for 3-5 hours to realize the metal oxide precursor in the damaged enamel. Surface coating; (3) Put the precursor into a reaction kettle, add ethanol, and react at 60-80°C for 8-12 hours, and finally obtain a uniform and dense metal oxide thin layer coated on the surface of the enamel.

Description

technical field [0001] The invention relates to the technical field of repairing damaged tooth enamel by coating with metal oxides, in particular to a controllable preparation of a metal oxide repairing layer closely connected with damaged tooth enamel. Background technique [0002] With the acceleration of the pace of life, people are often in a sub-healthy living environment. Excessive sugar intake and easily neglected dental health problems have led to increasingly serious dental problems, the most important of which are dental caries and tooth erosion. Lesions are produced from the outermost part of the tooth (at the enamel) until the inner dentin and its pulp are damaged. Therefore, the requirements for the method of repairing damaged teeth are getting higher and higher. How to restore the mechanical properties of enamel while ensuring that it is non-toxic and harmless to the human body, and save costs as much as possible in the repair method, shorten the time, and beco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K6/818A61K6/816
CPCA61K6/816A61K6/818
Inventor 郭林赵赫威刘少佳
Owner BEIHANG UNIV
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