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Method for treating surface of dental material by adopting polyethylene glycol.chitosan gel

A technology of chitosan gel and dental material, applied in the field of biochemical industry, can solve the problems of high cost, need for photoactivation, poor antibacterial durability, etc., achieve good biocompatibility, avoid insufficient sterilization, and save light treatment effect of the process

Active Publication Date: 2018-11-23
PEKING UNIV SCHOOL OF STOMATOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims to solve the technical problems of high cost, poor antibacterial persistence, and photoactivation required in the prior art for dental materials, and provides a low-cost, non-photoactivated, non-toxic, anti-bacterial adhesion, and long-lasting antibacterial A revolutionary method for treating the surface of dental materials

Method used

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  • Method for treating surface of dental material by adopting polyethylene glycol.chitosan gel
  • Method for treating surface of dental material by adopting polyethylene glycol.chitosan gel
  • Method for treating surface of dental material by adopting polyethylene glycol.chitosan gel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In Example 1, the stainless steel arch wire in the orthodontic material was used as the experimental object.

[0033] Pretreatment: ultrasonically clean the stainless steel archwire with acetone for 15 minutes, ultrasonically clean the stainless steel archwire with ethanol for 15 minutes, rinse the surface of the archwire with deionized water, and blow dry with nitrogen to make the surface of the archwire clean and dry.

[0034] At this time, the archwires were divided into control group, PEG group and CS-PEG group.

[0035] Control group: no follow-up treatment.

[0036] The PEG group and the CS-PEG group were also processed as follows:

[0037] Soak the arch wire with 0.1wt% NaOH solution for 30s, and then use 0.1wt% HNO 3 Soak the archwire in the solution for 30s, blow dry with nitrogen to make the surface of the archwire clean and dry, and treat the surface of the archwire with a PLASMA plasma cleaner for 15min.

[0038] Preparation of silylation solution: Dissol...

Embodiment 2

[0044] In Example 2, the stainless steel bracket in the orthodontic material is used as the experimental object.

[0045] Pretreatment: ultrasonically clean the stainless steel brackets with acetone for 15 minutes, ultrasonically clean the stainless steel brackets with ethanol for 15 minutes, rinse the surface of the brackets with deionized water, and blow dry with nitrogen to make the surface of the brackets clean and dry.

[0046] At this time, the brackets were divided into control group, PEG group and CS-PEG group.

[0047] Control group: no follow-up treatment.

[0048] The PEG group and the CS-PEG group were also processed as follows:

[0049] Soak the brackets with 0.1wt% NaOH solution for 30s, and use 0.1wt% HNO 3 Soak the bracket in the solution for 30 seconds, blow it dry with nitrogen to make the surface of the bracket clean and dry, and treat the surface of the bracket with a PLASMA plasma cleaner for 15 minutes.

[0050] Preparation of silylation solution: Diss...

Embodiment 3

[0056] In embodiment 3, the nickel-titanium arch wire in the orthodontic material is used as the experimental object.

[0057] Pretreatment: Use a mixture of hydrofluoric acid, nitric acid, and water (volume ratio HF:HNO3:H2O=3:35:100) to ultrasonically clean the nickel-titanium arch wire at room temperature for 5-10 minutes, and then use deionized water to ultrasonically clean the nickel-titanium arch wire at room temperature The arch wire was dried for 5-10 minutes with nitrogen to make the surface of the arch wire clean and dry.

[0058] At this time, the archwires were divided into control group, PEG group and CS-PEG group.

[0059] Control group: no follow-up treatment.

[0060] The PEG group and the CS-PEG group were also processed as follows:

[0061] Soak the arch wire with 0.1wt% NaOH solution for 30s, and then use 0.1wt% HNO 3 Soak the archwire in the solution for 30s, blow dry with nitrogen to make the surface of the archwire clean and dry, and treat the surface ...

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Abstract

The invention relates to a method for treating the surface of a dental material by adopting polyethylene glycol.chitosan gel. The invention solves the problems of high cost, poor antibacterial durability and needed photoactivation in treating the surface of the dental material in the prior art. The method comprises the following steps: carrying out ultrasonic cleaning, acid and alkali treatment, plasma cleaning and silane reaction pretreatment on the surface of the dental material; soaking the dental material in an acid solution of chitosan-polyethylene glycol, and reacting for 7 to 8 hours under the condition that the reaction temperature is 70 to 80 DEG C and the humidity is 95 to 100 percent; taking out, cleaning and drying; finally, obtaining a product. The method for treating the surface of the dental material by adopting the polyethylene glycol.chitosan gel, disclosed by the invention, can be widely used in the field of dental treatment.

Description

technical field [0001] The invention relates to the field of biochemical industry, in particular to a method for antibacterial treatment of the antibacterial surface of dental materials by using polyethylene glycol chitosan gel. Background technique [0002] Dental treatment materials are prone to bacterial colonization and food residue retention, which can easily cause iatrogenic tooth demineralization, caries, and periodontal disease. Due to the complex structure of dental materials, taking orthodontic fixed appliances as an example, it is difficult for patients to maintain oral hygiene after the appliance is bonded, and the physiological self-cleaning ability is reduced, resulting in increased plaque adhesion on the tooth surface and imbalance of microbial balance in the plaque, resulting in Enamel demineralization and periodontal damage. Regarding the current antibacterial research on orthodontic materials, there are mainly two methods: gargle and material modification....

Claims

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Application Information

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IPC IPC(8): A61L31/10A61L31/16
CPCA61L31/10A61L31/16A61L2300/236A61L2300/404A61L2300/606A61L2420/06C08L5/08C08L71/02
Inventor 韩冰刘洪亮彭丽颖王树涛林久祥
Owner PEKING UNIV SCHOOL OF STOMATOLOGY
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