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Tooth orthodontic correction material and preparation and application thereof

A technology for orthodontics and teeth, which is applied in the field of orthodontic materials for braces orthodontic materials with transparent polymer teeth, which can solve the problems of insufficient orthodontic stress, poor orthodontic effect, and insufficient elastic recovery force of polymer materials.

Active Publication Date: 2013-10-30
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the problem with the two is that the polymer materials produced do not have enough elastic recovery force, so that the stress generated during the orthodontic process is not enough, resulting in poor orthodontic effect

Method used

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  • Tooth orthodontic correction material and preparation and application thereof

Examples

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Comparison scheme
Effect test

Embodiment

[0071] In the following comparative examples and examples, unless otherwise specified, all percentages are percentages by weight.

[0072] The raw materials used in each of the following examples and comparative examples are as follows:

[0073] A total of four types of polyethylene terephthalate-1,4-cyclohexanedimethanol are used, namely A-D:

[0074] A: Brand: BR003, American Eastman Chemical Company, 1,4-cyclohexanedimethanol monomer unit accounted for 40% by weight of the entire polymer, the weight average molecular weight was 250,000, and the light transmittance was 91%.

[0075] B: Brand: DN011, American Eastman Chemical Company, 1,4-cyclohexanedimethanol monomer unit accounted for 40% by weight of the entire polymer, the weight average molecular weight was 280,000, and the light transmittance was 90%.

[0076] C: Brand: Z6006, Eastman Chemical Company, USA, 1,4-cyclohexanedimethanol monomer unit accounts for 35% by weight of the entire polymer, the weight average molec...

Embodiment 4

[0095] Polyethylene terephthalate-1,4-cyclohexanedimethanol B (the proportion of 1,4-cyclohexanedimethanol is 40%, the molecular weight is 280,000), polycarbonate A (molecular weight 30000 ) and thermoplastic polyurethane A (hardness 80A), according to the ratio of 70%, 10% and 20% respectively in the mixer, stir and mix evenly, and then add 0.3% (the percentage of all components of the orthodontic material) and the antioxidant 1010 (commercially available) that is 100% by weight), mix uniformly to obtain the mixture, then feed the mixture into the twin-screw extruder, and control the extrusion temperature of each section from the entrance to the exit to be 225°C-235°C , extrusion, granulation. Dry the cast pellets at 80°C for 5 hours, and then perform injection molding in an injection molding machine to obtain samples that meet the national standards GB / T 16421-1996, GB / T1034-1998 and GB / T 2410-80 respectively. Performance tests were carried out in accordance with the aforem...

Embodiment 5

[0097] Polyethylene terephthalate-1,4-cyclohexanedimethanol C (the proportion of 1,4-cyclohexanedimethanol is 35%, the molecular weight is 250,000), polycarbonate B (molecular weight 32000 ) and thermoplastic polyurethane B (hardness 90A), according to the ratio of 70%, 10% and 20% respectively in the mixer, stir and mix evenly, and then add 0.3% (the percentage of all components of the orthodontic material) and the antioxidant 1010 (commercially available) that is 100% by weight), mix uniformly to obtain the mixture, then feed the mixture into the twin-screw extruder, and control the extrusion temperature of each section from the entrance to the exit to be 225°C-235°C , extrusion, granulation. Dry the cast pellets at 80°C for 5 hours, and then perform injection molding in an injection molding machine to obtain samples that meet the national standards GB / T 16421-1996, GB / T1034-1998 and GB / T 2410-80 respectively. Performance tests were carried out in accordance with the aforem...

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Abstract

The invention relates to a tooth orthodontic correction material which comprises the following components based on the total weight of the correction material: (A), 50-90wt% of polyethylene glycol terephthalate-1,4-cyclohexane dimethyl alcohol ester; (B), 5-45wt% of polycarbonate; and (C), 5-45wt% of thermoplastic polyurethane, wherein the sum of the percentage contents of all components of the correction material is 100wt%. The invention also relates to a preparation method of the tooth orthodontic correction material and application of the tooth orthodontic correction material used for manufacturing a tooth orthodontic correction device. The tooth orthodontic correction material disclosed by the invention has high transparency and excellent low-stress relaxation rate and can provide long-time stress and long-lasting correction effect.

Description

technical field [0001] The invention relates to a tooth orthodontic treatment material, in particular to a transparent polymer tooth cover orthodontic material for tooth treatment. The invention also relates to a preparation method and application of the material. technical background [0002] Malocclusion refers to the deformity between teeth, dental arch, jaw and craniomaxillofacial caused by congenital genetic factors or acquired environmental factors. Irregular teeth and deep bite of the front teeth will affect the health function, cause relatively large wear and tear on the jaw joints, and often cause troubles for beauty lovers, and even cause low self-esteem. [0003] Orthodontic treatment refers to the treatment method in which orthodontists use modern technology and apply corresponding orthodontic materials to coordinate the relationship between the patient's teeth, dental arch, jaw and craniomaxillofacial system, and to make the stomatognathic system function normal...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L69/00C08L75/04C08L75/06
Inventor 丁雪佳张雨郭甜甜白玉兴张宁周克斌
Owner BEIJING UNIV OF CHEM TECH
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