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A method for preparing a material for orthodontic treatment, the material obtained therefrom and its use

An orthodontic and dental technology, applied in the field of orthodontic materials, can solve the problems of insufficient orthodontic stress, lack of high mechanical strength of polymer materials, and poor orthodontic effect.

Active Publication Date: 2020-03-17
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some studies have also been carried out on polymer materials for orthodontic treatment in China. For example, Chinese patent application CN02139224.2 uses ultra-high molecular weight polyethylene to make dental orthodontic brackets. Large mechanical strength, so that the stress generated during the orthodontic process is not enough, resulting in poor orthodontic effect

Method used

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  • A method for preparing a material for orthodontic treatment, the material obtained therefrom and its use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0140] 1) SiO 2 A was dried in a vacuum oven at 100°C for 2 hours, and the dried SiO 2 A Add to the absolute ethanol in the three-necked flask and stir for 15 minutes to disperse, then add to the ethanol solution containing 4% silane coupling agent KH-550 (produced by Henan Zhongbo Chemical Co., Ltd.), put the mixture in an ultrasonic cleaner After 60 minutes, it was transferred to another three-necked flask, heated and stirred at 78°C and refluxed for 2h, filtered with suction, washed with ethanol, dried in a vacuum oven at 80°C for 2h, ground and sieved. Take the surface-modified nano-silica with an average particle size of 5nm-60nm and dry it in a vacuum oven at 105°C for 2 hours to obtain surface-treated and dried SiO 2 a.

[0141] 2) The dried TPU A, surface treated and dried SiO 2 A. Antioxidant 1010 (Zibo Xiangdong Chemical Co., Ltd.) and Antioxidant 626 (Beijing Wanfuda Fine Chemical Factory) were stirred in a high-speed mixer at a ratio of 98 / 20 / 3 / 0.6 for 20 mi...

Embodiment 3

[0150] Repeat embodiment 1, the difference is: the SiO used in step 1) 2 Replace A with SiO 2 B; in step 2), the feeding ratio is changed to 98 / 5 / 3 / 0.6; in step 3), PETG A is replaced with PETG B; and in step 4), the feeding ratio is changed to 90 / 10.66;

[0151] Various performance tests were performed on the obtained dried hot-pressed film, and the results are shown in Table 1.

Embodiment 5

[0156] Repeat embodiment 1, difference is: step 2) in feed ratio change 196 / 20 / 3 / 0.6; Step 3) in PETG A change PETG B, feed ratio change 68.6 / 9.8; And step 4) The medium feeding ratio is changed to 78.4 / 21.96.

[0157] Various performance tests were performed on the obtained dried hot-pressed film, and the results are shown in Table 1.

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Abstract

The invention relates to a method for preparing orthodontic treatment material. The material contains 50-85 wt% of PETG, 8-40 wt% of PC, 2-20 wt% of TPU and 0.3-5 wt% of nano-SiO2. The method comprises the following steps: fusing and processing the nano-SiO2 which undergoes surface activation treatment and TPU to obtain pellets; fusing and processing PETG and PC to obtain pellets; mixing the abovepellets and then fusing and processing to obtain the orthodontic treatment material. The orthodontic treatment material prepared by the method has good transparency, good mechanical properties and chemical properties, satisfies sanitation grade, and especially has low enough water absorption and stress relaxation. The invention also relates to application of the orthodontic treatment material inmanufacturing an orthodontic treatment device.

Description

technical field [0001] The invention relates to a method for preparing a tooth orthodontic treatment material, in particular to a method for preparing a transparent polymer tooth brace orthodontic material for tooth treatment, and the invention also relates to the obtained tooth orthodontic treatment material and its application. Background technique [0002] Orthodontics is the treatment of malocclusions through methods such as orthodontics or surgery. Malocclusion refers to the deformity of teeth, jaw, and craniofacial caused by congenital or acquired factors during the growth and development of children, and the teeth are uneven. [0003] Crooked teeth can cause many problems. First of all, it seriously affects the normal performance of oral function, mainly on our chewing, swallowing, breathing, and pronunciation functions. Secondly, it seriously affects the health of the periodontal tissue and oral hygiene. The irregular dentition, especially the crowded teeth, on the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L69/00C08L75/04C08L75/08C08K9/06C08K3/36
CPCC08K2201/003C08K2201/006C08K2201/011C08L67/02C08L2201/10C08L2205/03C08L2207/04C08L69/00C08L75/08C08K9/06C08K3/36C08L75/04
Inventor 丁雪佳宋长统徐福建
Owner BEIJING UNIV OF CHEM TECH
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