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1.
Journal of Medical Postgraduates ; (12)2003.
Article in Chinese | WPRIM | ID: wpr-684168

ABSTRACT

Objectives:To study the preparation techniques of gelatin microspheres encapsulated with sodium fluoride and evaluate the anticaries functions in dental plaque model in vitro. Methods:Fluoride gelatin microspheres were prepared by emulsion polymerisation method. The encapsulation rate and drug contents were tested by ISE. In vitro inhibition of demineralization were also examined. Results:The mean size of fluoride GMS was (16.81?8.77)?m.The encapsulation rate was 76.73%.The drug content was 5.61%.The release profile in vitro showed sustained effects. Fluoride GMS can prevent demineralization more efficiently. Conclusions:Fluoride gelatin microspheres may be an promising topical fluoride release system.

2.
Journal of Practical Stomatology ; (6)2000.
Article in Chinese | WPRIM | ID: wpr-670466

ABSTRACT

砄bjective:To compare the adherent ability of Candida albicans on the surface of two kinds of silicone elastomer used as prosthodontic materials and to study the factors affecting the adherence.Methods: Candida albicans were cultured on the surface of SY 1 and MDXA 4210 with or without saliva acquired pellicle for 10 min, then the number of the bacteria was counted.Results:With or without saliva acquired pellicle,the number (1?10 3/mm 2) of C.albicans on SY 1 was 24.5?0.88 and 2.0?0.47 respectively( P 0.05 ).Conclusion:There is little difference between the adherent ability of C.albicans on the two kind of silicone elastomer.Saliva acquired pellicle can decrease the adherence.

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