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- W2379612309 abstract "Objective The aim of the study was to develop a kind of new fluoride composite resin. We explored the practicability of preparing fluorinated filler by using hollow silica microsphere as a carrier of sodium fluoride( Na F) as well as its fluoride-release properties in composite resin. Methods Hollow silica microspheres with mesoporous shells were prepared by the sacrificial template method. Na F was loaded into hollow silica microspheres by the impregnation method. Scanning electron microscopy( SEM)was used to determine the morphologies of hollow silica microspheres before and after Na F loading. Hollow nanosilica microsphere containing Na F and Na F powder were respectively mixed with resin at the same intial Na F concentration of 13. 9,27. 8 and 55. 6 mg/m L for comparison,which were taken as the experiment group and the control group. The samples were put into 100 m L artificial saliva at37 ℃ to caculate the cumulative fluoride release quantities from 1 d to 47 d. Results The morphology of hollow microsphere did not chang significantly before and after Na F loading. In the experiment group,the cumulative quantities of fluoride release were 0. 026,0. 105,0. 21 mg/cm2 on 1 d and increased to 0. 088,0. 239,0. 484 mg/cm2 on 47 d according to respective initial Na F concentration.While in the control group,the corresponding figures were 0. 006,0. 025,0. 04 mg/cm2 on 1 d and 0. 022,0. 045,0. 056 mg/cm2on47 d. The difference between these two groups was of great statistical significance. Conclusion Hollow silica microsphere could be used as a carrier of Na F. Fluorinated nanosilica filler using hollow microsphere promotes the fluoride release in composite resin." @default.
- W2379612309 created "2016-06-24" @default.
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- W2379612309 date "2015-01-01" @default.
- W2379612309 modified "2023-09-23" @default.
- W2379612309 title "Study on preparation and fluoride-release properties of fluorinated nanosilica filler" @default.
- W2379612309 hasPublicationYear "2015" @default.
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