Preparation method for antimicrobial peptide formula for dental implant
A technology for dental implants and dental implants is applied in the field of preparation of antimicrobial peptide formulations, which can solve the problems of implant loosening and falling off, peripheral bone tissue defect and loss, etc., and achieves broad application prospects and high-efficiency sterilization effects.
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[0027] Example 1
[0028] (1) The dental implant with the surface of the titanium dioxide nanotube array layer was cleaned with deionized water, ethanol and acetone in sequence, and then dried with nitrogen, placed in a vacuum drying oven, and dried at 60°C for 24 hours , Put aside;
[0029] (2) Dissolving chitosan in a 0.3% acetic acid solution to prepare a 0.5 mg / ml chitosan solution. The chitosan has a degree of deacetylation of 50% and Mw of 1000 kDa.
[0030] (3) Mix the solution obtained in step (2) with liquid paraffin at a volume ratio of 0.1, and add Span 80 with a volume concentration of 0.5%. At the same time, add the dispersing agent magnesium stearate, the combination of Span 80 and magnesium stearate The mass ratio is 2:1. Stir for more than 1 hour at room temperature to form a uniform water-in-oil emulsion;
[0031] (4) Add 1 ml of the crosslinking agent vanillin at 5 mg / ml to the water-in-oil emulsion obtained in step (3), and react for 4 hours under stirring at 40°C ...
Example Embodiment
[0034] Example 2
[0035] (1) The dental implant with the surface of the titanium dioxide nanotube array layer was cleaned with deionized water, ethanol and acetone in sequence, and then dried with nitrogen, placed in a vacuum drying oven, and dried at 60°C for 24 hours , Put aside;
[0036] (2) Dissolve chitosan in a 3% acetic acid solution to prepare a 5 mg / ml chitosan solution. The chitosan has a degree of deacetylation of 98% and a Mw of 1500 kDa.
[0037] (3) Mix the solution obtained in step (2) with liquid paraffin at a volume ratio of 0.4, and add Span 80 with a volume concentration of 1%. At the same time, add the dispersing agent magnesium stearate, the blend of Span 80 and magnesium stearate The mass ratio is 4:1, stirring at room temperature for more than 1 hour to form a uniform water-in-oil emulsion;
[0038] (4) Add 1 ml of 10mg / ml crosslinker vanillin to the water-in-oil emulsion obtained in step (3), and react for 6 hours under stirring at 60°C to obtain chitosan par...
Example Embodiment
[0041] Example 3
[0042] The dental implant obtained in step (1) of Example 1 was immersed in the chitosan solution described in Examples 1 and 2 above for 10-20 minutes to make the surface of the dental implant positively charged; Fully clean with ionized water;
[0043] Immerse the above-mentioned cleaned dental implant in the 0.5mg / ml sodium hyaluronate solution mentioned above for 10-20 minutes, so that the surface of the dental implant will be negatively charged; then fully rinse with deionized water;
[0044] The dental implant obtained by the treatment is immersed in the chitosan solution described in Examples 1 and 2 above for 10-20 minutes, so that the surface of the dental implant is positively charged; then it is thoroughly washed with deionized water;
[0045] According to the number of layers to be assembled, repeat the steps of Example 3 more than two times to obtain dental implants with different layers of coating.
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