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Introduction: Dental practitioners frequently face a notable challenge in selecting an ideal restorative material. Glass ionomer cement (GIC) has been a frequently used material as a substitute to amalgam in restoring primary dentition. Aim of the study: To clinically evaluate GC Fuji II LC (Light-Cured, Resin-Reinforced Glass Ionomer Restorative) and GC Fuji IX GP EXTRA (Packable Glass Ionomer) when used to restore occlusal caries in lower second primary molars. Materials and Methods: Seventy-six molars in 38 children were included in this study. Inclusion criteria included patients; (1) Free from any medical conditions. (2) Aged 5-7 years old. (3) Reported with bilateral restorable decayed second primary molars with simple occlusal decay. (4) Clinically; no signs of irreversible pulpitis. Split-mouth technique was used and a single operator performed all restorations. Examined restorative materials were randomly allocated to either side of the mouth. Cavities were prepared in the utmost conservative manner. Both Fuji II and Fuji IX were prepared according to manufacturers' instructions. Clinical assessment was performed after 3, 6, 9 and 12 months according to United States Public Health Services (USPHS) evaluation criteria and rating system. Statistical Analyses included Wilcoxon signed-rank test as well as Friedman's test followed by Dunn's test. Results: Among the treated 38 subjects; there were18 boys (47.4%) and 20 girls (52.6%). Mean ± standard deviation values for age were 5.7 ± 0.8 years old with a minimum of 5 and a maximum of 7 years old. After 12 months, a statistically significant difference was noted between marginal adaptation, anatomic form, secondary caries and marginal discoloration scores in the two materials. Conclusions: Fuji II and Fuji IX showed comparable marginal adaptation. Fuji II restorations showed better results regarding anatomic form, secondary caries and marginal discoloration when compared to Fuji IX.

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Aim: The purpose of this study was to assess the salivary bacterial level and dental caries experience in children with black stained teeth. Methods: The sample comprised 73 children aged 4-6 years with black stains where the caries experience was evaluated using dmft index. Also, the salivary sample was taken into a sterile container and taken to the laboratory within 1 hour for processing. In the laboratory saliva dilution was done and sample was placed into a plate which contains Brain heart infusion agar. From the plate, identification of the morphology of Actinomyces was done. The colony of Actinomyces on the plate was counted with colony counter using colony forming unit. With the same salivary sample the pH was measured using the pH meter. Results: Among the children with BS, the mean dmft was (2.3), most children had very low dmft score (42.5%). So this showed lower caries experience in children with black stains. Regarding the Actinomyces count the results showed higher number of Actinomyces in children with BS. However it was statistically insignificant. pH of the studied children was mainly in the alkaline range with a mean (9.07) with prevalence (75.2%). Conclusion: The results of this study indicate that in this small sample of Egyptian children with black stainsthey were found to have lower caries experience. The salivary bacterial count of Actinomyces was high in the same group of children and that the higher the Actinomyces number the less the dmft score. The children with BS also showed pH mainly in the alkaline range.