الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Background: Atraumatic restorative treatment has been widely used in management of dental decay. Silver diamine fluoride has been known for its caries arresting effect with some esthetic limitations. A potential alternative preparation using fluoride and silver nanoparticles has been introduced.
Objective: This study’s purpose was to investigate the remineralizing effect of 5% nanosilver fluoride (NSF) and 38% silver diamine fluoride (SDF) on demineralized dentin of primary molars.
Methods: Class V cavity preparation was done on the buccal surface of 55 extracted or exfoliated primary molars. Double layer of nail varnish was applied to the teeth except the inside of the cavity and then random distribution of teeth into 5 groups was made according to the tested cavity treatment: group I (normal dentin), group II (reference group, demineralized dentin without cavity treatment or restoration), group III (5% NSF + glass ionomer), group IV (38% SDF + glass ionomer) and group V (glass ionomer without cavity treatment). Teeth in groups II, III, IV and V were subjected to pH cycles for 14 days to induce dentin demineralization. Cavity treatment and restoration were done for groups III, IV and V and specimens were stored in artificial saliva for 14 days. All the teeth were cut to reveal the dentin surface. Elemental changes were determined by energy dispersive x-ray (EDX) and surface topography was observed by scanning electron microscope (SEM).
Results: The highest overall Ca and P contents of dentin were found in the NSF group; however, the differences among groups were not significant (P=0.060, P=0.201 for Ca and P contents respectively). The greatest F and Ca/P ratio were found in the SDF group with significant differences among groups. (P<0.0001, P=0.046 for F content and Ca/P ratio respectively). There was a significant difference in the overall Ag content between NSF and SDF groups (P=0.001), however; no significant difference was found in the depth of penetration of Ag between the two groups (P=0.988). The SDF treated dentin showed the highest topographic alterations, whereas GIC group showed the least topographic changes.
Conclusion: Nanosilver fluoride could be used as an alternative to SDF.
Keywords: Silver diamine fluoride, Nanosilver fluoride, Glass ionomer cement, Atraumatic restorative treatment, Dentin.