Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Operative Dentistry

Objective: The aim of this clinical trial was to assess the effect of partial caries removal and glass ionomer restoration with and without application of Nano silver fluoride (NSF) solution on the remaining carious dentin remineralization and on the teriary dentin formation.Methods: This was a split mouth study design that included twenty-two patients having two contralateral deep occlusal carious molars. A total of 44 cavities were prepared with partial caries excavation technique. For each patient, the cavity at one side was treated with 0.2 ml of NSF solution prior to glass ionomer restoration with glass hybrid technology; this comprised the study group. For the other side, glass hybrid was directly applied into the cavity; this comprised the control group.Standardized digital periapicalradiographswereperformed at baseline and after 6 months. The carious dentin density and the remaining dentin thickness were assessed. Comparison between the two groups was done using Mann Whitney U test for independent samples. Within group comparison was done using Wilcoxon Signed Rank test for paired samples. Results: 16 out of the 22 included patients completed the study.Statistically significant increase in both the dentin density and the remaining dentin thickness were found in both groups after 6 months. The percentage change in the density after 6 months was significantly higher for the study group.However, no statistically significant difference was found between both groups in the thickness of the tertiary dentin formed. One case of clinical failure in each group was observed

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