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Synthesis method of controlled alloy for minimally invasive dental pulp treatment nickel-titanium instrument

A technology of nickel-titanium alloy and synthesis method, which is used in dentistry, filling teeth, dental prosthetics and other directions, can solve problems such as harm, affect treatment effect, inconvenient removal of bacteria, etc., and achieve the effect of improving durability and thin thickness

Inactive Publication Date: 2019-03-22
QINGDAO STOMATOLOGICAL HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a medical biomaterial, nickel-titanium alloy contains more than 50at% nickel, when nickel-titanium alloy is used, corrosion process may occur, release metal nickel ions, and interact with biological tissues, causing harm to the human body Therefore, it is necessary to modify its surface to improve its corrosion resistance, reduce the overflow of nickel ions, and improve its biocompatibility, and nickel-titanium itself does not have antibacterial effect. The deep bacteria are generally inconvenient to remove, affecting the treatment effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for synthesizing a control alloy for a nickel-titanium instrument for minimally invasive endodontic treatment, comprising the following steps:

[0024] Nickel-free surface of S1 nickel-titanium alloy: place the nickel-titanium alloy in a mixed solution of potassium permanganate and hydrochloric acid for dealloying reaction, after the reaction is completed, wash it with water and perform polishing treatment to obtain nickel-titanium alloy without nickel on the surface alloy;

[0025] S2 nickel-titanium alloy surface coating: Coat the aqueous solution of polytetrafluoroethylene on the nickel-titanium alloy without nickel on the surface, and then place the nickel-titanium alloy without nickel on the surface coated with the aqueous solution of polytetrafluoroethylene at 360 Sintering at high temperature in an environment of ℃ to form a film-like coating, calcining for 1 hour, and obtaining a film-coated nickel-titanium alloy after cooling the film-like coating;

...

Embodiment 2

[0035] A method for synthesizing a control alloy for a nickel-titanium instrument for minimally invasive endodontic treatment, comprising the following steps:

[0036] Nickel-free surface of S1 nickel-titanium alloy: place the nickel-titanium alloy in a mixed solution of potassium permanganate and hydrochloric acid for dealloying reaction, after the reaction is completed, wash it with water and perform polishing treatment to obtain nickel-titanium alloy without nickel on the surface alloy;

[0037] S2 nickel-titanium alloy surface coating: Coat the aqueous solution of polytetrafluoroethylene on the nickel-titanium alloy without nickel on the surface, and then place the nickel-titanium alloy without nickel on the surface coated with the aqueous solution of polytetrafluoroethylene at 420 High temperature sintering in ℃ environment to form a film-like coating, calcined for 30 minutes, and the film-like coating is cooled to obtain a film-coated nickel-titanium alloy;

[0038] Act...

Embodiment 3

[0047] A method for synthesizing a control alloy for a nickel-titanium instrument for minimally invasive endodontic treatment, comprising the following steps:

[0048] Nickel-free surface of S1 nickel-titanium alloy: place the nickel-titanium alloy in a mixed solution of potassium permanganate and hydrochloric acid for dealloying reaction, after the reaction is completed, wash it with water and perform polishing treatment to obtain nickel-titanium alloy without nickel on the surface alloy;

[0049] S2 nickel-titanium alloy surface coating: Coat the aqueous solution of polytetrafluoroethylene on the nickel-titanium alloy without nickel on the surface, and then place the nickel-titanium alloy without nickel on the surface coated with the aqueous solution of polytetrafluoroethylene at 400 High temperature sintering in ℃ environment to form a film-like coating, calcined for 40 minutes, and the film-like coating is cooled to obtain a film-coated nickel-titanium alloy;

[0050] Act...

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Abstract

The invention discloses a synthesis method of a controlled alloy for a minimally invasive dental pulp treatment nickel-titanium instrument. The method comprises the following steps that S1, the surface of a nickel-titanium alloy is subjected to free-of-nickel treatment; S2, the surface of the nickel-titanium alloy is subjected to coating; and S3, the nickel-titanium alloy is activated. According to the method, a plurality of micropores are formed in the nickel-titanium alloy subjected to surface free-of-nickel treatment, after the surface is subjected to the coating, a plurality of tiny cavities are formed between the nickel-titanium alloy and polytetrafluoroethylene, and finally the activation step is carried out, so that berberine can be soaked in the cavities between the nickel-titaniumalloy and the polytetrafluoroethylene; and the berberine in the cavities can release slowly, due to the fact that the berberine has a certain sterilization effect, when the berberine slowly releases,the minimally invasive dental pulp treatment can be facilitated.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a method for synthesizing a control alloy for minimally invasive endodontic treatment nickel-titanium instruments. Background technique [0002] Due to its excellent mechanical properties and better biocompatibility, biomedical nickel-titanium alloys are widely made into various medical devices. As a medical biomaterial, nickel-titanium alloy contains more than 50at% nickel, when nickel-titanium alloy is used, corrosion process may occur, release metal nickel ions, and interact with biological tissues, causing harm to the human body Therefore, it is necessary to modify its surface to improve its corrosion resistance, reduce the overflow of nickel ions, and improve its biocompatibility, and nickel-titanium itself does not have antibacterial effect. Bacteria in the deep area are generally inconvenient to remove, which affects the therapeutic effect. [0003] Berberine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/28C23C26/00A61C5/00
CPCC23F1/28A61C5/00C23C26/00
Inventor 辛秉昌王芳孙德刚吕健吴迪
Owner QINGDAO STOMATOLOGICAL HOSPITAL
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