الفهرس 
Review of literatureOnly 14 pages are availabe for public view
 |  | from | 83 |  |  |
| | | from | 83 | | |
Abstract
Dental caries remains one of the worldwide major health problem, despite
the advances in the dental care, it happens due to the interaction between various
factors like diet consumption, hosts susceptibility, and presence of
microorganisms like Streptococcus Sobrinus and Streptococcus Mutans over a
certain period of time, absence of any of these factors makes it hard to change the
mineral content of the tooth causing demineralization.
At the early stages of caries, the demineralization process can be stopped
and remineralization can take place by application of fluorides especially in the
form of dental varnishes, as they deposit minerals in the form of calcium,
phosphate, and fluoride ions forming fluorapatite, which is more resistant to
demineralization, the ions gained coalesce together in a hexagonal form which is
the best strategy to prevent caries.
The study aims to to compare between three different fluoride varnishes
(Sodium Fluoride varnish (NAF), Fluor Protector varnish (FP), Nano Silver
Fluoride varnish (NSF) on remineralization of enamel of primary teeth using:
Surface Micro Hardness test (Vickers test), Environmental Scanning Electron
Microscope, and Energy Dispersive x-ray spectroscopy (EDX) for assessing
mineral content.
forty sound extracted primary anterior teeth were collected from the
outpatient dental clinic of the pedodontic department, Faculty of Dentistry, Suez
Canal university, they were sectioned into two halves to get a total of eighty
samples, based upon sample size calculation. They were cut lower than the
cemento-enamel junction by 2mm by a sharp disc.
53
SUMMARY
A total of 16 samples were selected to act as a control group without any
treatment, in order to compare the final reminerlization outcome to it. While,
another 16 samples were allocated to be demineralized and act as a positive
control group, to compare the amount of ions absorbed by the demineralized
samples in the three experimental groups.
The other 48 demineralized samples, were divided into three groups
equally subgroup A was treated with Fluor Protector varnish while B was treated
by Enamel Pro varnish and finally C was treated by Nano Silver Fluoride varnish.
The pH cycle was chosen to reproduce the dynamic process of caries lesion
development, alternating reminerlization and demineralization periods being
widely applied to asses remineralizing agents.
Surface Micro Hardness test (Vickers test), Environmental Scanning
Electron Microscope, and Energy Dispersive x-ray spectroscopy (EDX) for
assessing mineral content were used for assessment in the National Research
Centre, Dokki, Egypt.
The study showed that the Enamel pro had the highest values, but there
was no significant statistical difference between the three groups and all the
materials used proved their efficiency in remineralization of the demineralized
enamel