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Chinese Journal of Dental Research

Year 1999
Volume 2 , Issue 1

Pages: 31 - 33

Neutron Activation Analysis of Fluoride Release After Treatment with a Fluoride Varnish in Vitro


Objective: To use neutron activation analysis to study a new type of cariostatic material, fluoride varnish, in terms of its anti-caries mechanism and its release in vitro. Materials and Methods: Twenty enamel specimens were measured for baseline fluoride content using neutron activation analysis. The enamel specimens were then fluoridated with 1.5% sodium fluoride varnish for 24 hours, and their enamel fluoride content was measured again with neutron activation analysis. Results: The baseline fluoride content in the enamel specimens was 161.7 ug/g; after fluoridation, the fluoride content in the enamel specimens increased to 277.8 ug/g, or about 1.7 times. Conclusion: It is evident that this sodium fluoride varnish can significantly increase enamel fluoride content. The neutron activation analysis is a good method for fluoride measurement in vitro.



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