Bracket for orthodontics and preparation method thereof

A technology for orthodontics and brackets, applied in the field of orthodontic brackets and their preparation, can solve the problems of weak ceramic material strength, color staining and discoloration, affecting treatment results, etc., and achieves excellent mechanical properties and is not easy to discolor.

Inactive Publication Date: 2016-01-27
SUZHOU COSMETIC MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength of ceramic materials is weak, and it is easy to break during the treatment or removal process, which affects the treatment results, and the color is prone to staining and discoloration due to poor oral hygiene maintenance habits of patients.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A bracket for orthodontics, comprising the following raw materials in parts by mass: 50 parts of alumina powder, 8 parts of carbon fiber, 10 parts of calcium phosphate, 1 part of dispersant, 1 part of plasticizer, and 2 parts of adhesive 1 part, antibacterial agent 1 part. Wherein, the binder is methyl cellulose and vinyl alcohol, and the particle size of the alumina powder is less than 1 μm.

[0023] A kind of preparation method for the bracket for orthodontics described above, comprises the steps:

[0024] (1) According to the mass ratio, mix each raw material at 160-180°C for 1 hour;

[0025] (2) After mixing evenly, carry out injection molding by the mold of bracket;

[0026] (3) Sinter the molded green body by hot isostatic pressing for 6-10 hours, and control the temperature rise of the furnace side wall surface to ≤50°C;

[0027] (4) Grinding and polishing with diamond paste to obtain the bracket for orthodontics.

Embodiment 2

[0029] A bracket for orthodontics, comprising the following raw materials in parts by mass: 56 parts of alumina powder, 9 parts of carbon fiber, 12 parts of calcium phosphate, 1.5 parts of dispersant, 1.4 parts of plasticizer, and 3 parts of adhesive 1 part, antibacterial agent 1 part. Wherein, the binder is vinyl alcohol, and the particle size of the alumina powder is less than 1 μm.

[0030] A kind of preparation method for the bracket for orthodontics described above, comprises the steps:

[0031] (1) According to the mass ratio, mix each raw material at 160-180°C for 1 hour;

[0032] (2) After mixing evenly, carry out injection molding by the mold of bracket;

[0033] (3) Sinter the molded green body by hot isostatic pressing for 6-10 hours, and control the temperature rise of the furnace side wall surface to ≤50°C;

[0034] (4) Grinding and polishing with diamond paste to obtain the bracket for orthodontics.

Embodiment 3

[0036] A bracket for orthodontics, comprising the following raw materials in parts by mass: 64 parts of alumina powder, 11 parts of carbon fiber, 15 parts of calcium phosphate, 2 parts of dispersant, 2 parts of plasticizer, and 4 parts of adhesive 1 part, antibacterial agent 1 part. Wherein, the binder is methyl cellulose and vinyl alcohol, and the particle size of the alumina powder is less than 1 μm.

[0037] A kind of preparation method for the bracket for orthodontics described above, comprises the steps:

[0038] (1) According to the mass ratio, mix each raw material at 160-180°C for 1 hour;

[0039] (2) After mixing evenly, carry out injection molding by the mold of bracket;

[0040] (3) Sinter the molded green body by hot isostatic pressing for 6-10 hours, and control the temperature rise of the furnace side wall surface to ≤50°C;

[0041] (4) Grinding and polishing with diamond paste to obtain the bracket for orthodontics.

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Abstract

The invention specifically relates to a bracket for orthodontics and a preparation method thereof, and belongs to the technical field of medical materials. The bracket for orthodontics comprises the following raw materials (by weight): 50-75 parts of alumina powder, 8-15 parts of carbon fiber, 10-18 parts of calcium phosphate, 1-3 parts of a dispersant, 1-3 parts of a plasticizer, 2-5 parts of an adhesive and 1-2 parts of an antibacterial agent. The bracket for orthodontics has excellent mechanical properties, will not absorb X-rays, is beautiful and is not easy to change color.

Description

technical field [0001] The invention belongs to the technical field of medical materials, and in particular relates to a bracket for orthodontics and a preparation method thereof. Background technique [0002] Orthodontics is the correction of teeth and the removal of malocclusion. Orthodontic treatment mainly uses various orthodontic devices to adjust the coordination between facial bones, teeth and maxillofacial nerves and muscles, that is, to adjust the relationship between the upper and lower jaws, between the upper and lower teeth, between the teeth and the jaws The abnormal relationship between the nerves and muscles that connect them, the ultimate goal of correction is to achieve the balance, stability and aesthetics of the oral and jaw system. The correction of malocclusion (occlusion) mainly relies on wearing appliances inside or outside the oral cavity to apply appropriate "biological force" to teeth, alveolar bone and jaw bone to make them move physiologically, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/80C04B35/10
Inventor 金仲恩全春兰张帆
Owner SUZHOU COSMETIC MATERIALS
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