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Teeth correcting wire with surface deposited calcium phosphorus biological ceramic and its preparation method

A technology for orthodontics and bioceramics is applied in the field of medical devices to achieve the effects of simple and easy preparation method, high bonding strength and reduced dissolution

Inactive Publication Date: 2006-11-08
SOUTHEAST UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is no ideal tooth orthodontic wire with a calcium-phosphorus bioceramic coating on the surface that can be applied

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The nickel-titanium memory alloy tooth orthodontic wire with calcium-phosphorus bioceramics deposited on the surface, in the result, the metal substrate surface of the nickel-titanium memory alloy tooth-orthopedic wire has a layer of calcium-phosphorus bioceramic coating with good biocompatibility, and the appearance is tooth white . The calcium phosphorus bioceramic coating has a double-layer structure, which is composed of a calcium phosphate amorphous bottom layer in contact with the nickel-titanium memory alloy substrate and a bone-like apatite crystal phase surface layer. The thickness of the calcium phosphate amorphous bottom layer is 1.5-2.0 μm; The thickness of the surface layer of bone apatite is 15-20 μm. Its preparation steps are as follows:

[0027] 1) First process the orthodontic wire with medical nickel-titanium memory alloy;

[0028] 2) Surface activation treatment of the orthodontic wire: the nickel-titanium memory alloy orthodontic wire is ultrasonic...

Embodiment 2

[0033] A stainless steel orthopedic wire with calcium-phosphorus bioceramics deposited on the surface. As a result, the metal substrate of the stainless steel orthodontic wire has a layer of calcium-phosphorus bioceramic coating with good biocompatibility, and its appearance is tooth white. The calcium phosphorus bioceramic coating has a double-layer structure, which is composed of a calcium phosphate amorphous bottom layer in contact with the stainless steel substrate and a bone-like apatite crystal phase surface layer. The thickness of the calcium phosphate amorphous bottom layer is 7.5-9.0 μm; bone-like apatite The thickness of the stone surface layer is 40-50 μm. Its preparation steps are as follows:

[0034] 1) First process the orthodontic wire with medical stainless steel;

[0035] 2) Surface activation treatment of orthodontic wire: after ultrasonically cleaning the stainless steel orthodontic wire with acetone, 70% alcohol, and distilled water in sequence, use boilin...

Embodiment 3

[0040] A nickel-titanium memory alloy dental orthopedic wire deposited with calcium-phosphorus bioceramics on the surface. As a result, the metal substrate surface of the nickel-titanium memory alloy dental orthopedic wire has a layer of calcium-phosphorous bioceramic coating with good biocompatibility, and the appearance is Teeth white. The calcium phosphorus bioceramic coating has a double-layer structure, which is composed of a calcium phosphate amorphous bottom layer in contact with the nickel-titanium memory alloy substrate and a bone-like apatite crystal phase surface layer. The thickness of the calcium phosphate amorphous bottom layer is 7.5-9.0 μm; The thickness of the surface layer of bone apatite is 40-50 μm. Its preparation steps are as follows:

[0041] 1) First process the orthodontic wire with medical nickel-titanium memory alloy;

[0042] 2) Surface activation treatment of orthodontic wires: After ultrasonically cleaning NiTi memory alloy orthodontic wires wit...

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Abstract

The present invention relates to an orthodontic wire for orthodontic treatment, in particular to an orthodontic wire with a calcium-phosphorous bioceramic coating on the surface with good biocompatibility and a preparation method thereof. The metal matrix of the orthodontic wire There is a layer of calcium phosphorus bioceramic coating with good biocompatibility on the surface. The calcium phosphorus bioceramic coating has a double-layer structure, that is, an amorphous bottom layer of calcium phosphate and bone-like phosphorous ash in contact with the metal matrix of the tooth correction wire. The surface layer of the stone crystal phase is composed of the calcium phosphate amorphous bottom layer with a thickness of 1-10 μm; the bone-like apatite crystal phase surface layer with a thickness of 10-50 μm. The preparation method is as follows: firstly process the tooth-orthopedic wire with nickel-titanium memory alloy or stainless steel; carry out surface activation treatment on the tooth-orthopedic wire, and then obtain a calcium phosphate amorphous bottom layer and A calcium-phosphorus bioceramic layer composed of bone-like apatite crystal phase surface layers in sequence.

Description

technical field [0001] The invention relates to a tooth-orthodontic wire for orthodontic treatment, in particular to a tooth-orthodontic wire with a calcium-phosphorus bioceramic coating on the surface with good biocompatibility and a preparation method thereof, belonging to the technical field of medical devices. Background technique [0002] Orthodontic appliances for orthodontic treatment mainly include brackets, buccal tubes, and orthodontic wires, among which the orthodontic wire is a key component that runs through the brackets and surrounds all teeth that need to be reshaped. Orthodontic wires are usually made of nickel-titanium memory alloy or stainless steel. Although these materials have good corrosion resistance, due to the long period of orthodontic treatment, generally more than half a year, the oral environment is harmful to the teeth during orthodontic treatment. Due to the corrosion of orthodontic wire, metal ions will be continuousl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C7/12
Inventor 储成林林萍华浦跃朴薛小燕沈刚
Owner SOUTHEAST UNIV
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