Objective: The purpose of this study is to evaluate the remineralization potential of the self-assembling peptideP11-4 (Curodont repair) versus highly concentrated fluo-

Purpose: The aim of this study was to evaluate the antimicrobial effect of Coconut oil on Streptococcus mutans count in saliva in a group of Egyptian children and compare its effect with chlorohexidine mouth wash. Material and Methods: A total of 60 Egyptian children were included in this study, their ages ranging from (5-10) years. The children (60) were divided into two groups; each group consists of 30 children (Group A, Group B). Group A (study group): Coconut oil consisted of thirty child, each participant was instructed to rinse with 10 ml of Coconut oil 3 times per day for two weeks with average (1minute /rinse) Group B (Control group):Chlorohexidine mouthwash (0.2%) consisted of thirty child, each participant was instructed to rinse with 10 ml of chlorohexidine mouthwash, 3 times per day for two weeks with average (1minute /rinse). Results: Statistically significant reduction in Streptococcus mutans count was seen in both oil pulling and chlorohexidine groups but the reduction was found to be more in the oil pulling group than chlorhexidine group. Conclusion: Use of coconut oil pulling therapy may be used as preventive therapy at home to maintain oral hygiene as it is natural, safe and has no side effects.

Purpose:The purpose of this invitro study was to compare between micoleakage of EQUIA Forte and resin modified glass ionomer cement in primary and permanent teeth. Materials and methods: Class V cavity preparation was done on the labial surface of 45 primary anterior teeth and 45 premolars. Teeth were then grouped and restored with EQUIA Forte, Fuji II LC, or Riva light cure. The microleakage at tooth restoration interface was done using dye penetration test with methylene blue. The score of dye penetration depth at the occlual and cervical margins was recorded using stereomicroscope. Results: Occlusal and cervical segments of primary and permanent teeth showed that the highest scores were recorded in Fugi II LC, followed by Riva light cure, while the lowest scores were recorded in EQUIA Forte. Chi square test revealed a significant difference between restorative materials (p=0.00). Conclusion: Among the three restorative materials, EQUIA Forte can be considered as the best material in the term of microleakage. Periodic evaluation is advised when any of the three materials are used in clinical practice. azhardentj@azhar.edu.eg

The aim of the current study was to investigate the effect of commercially available Curodont on enamel surface with white spot lesions after orthodontic treatment. A total of 14 teeth with white spot lesions in orthodontically treated subjects aged 12 to 22 years were enrolled in this clinical study. All participants recently finished their treatment with fixed orthodontic appliances in the Department of Orthodontics at the Faculty of Dentistry for girls, Al-Azhar University. Digital periapical x-ray was taken before and after three months of curodont application. Comparisons between the measures of the baseline and post treatment images were calculated to determine the radiodenisty change (mineral content change) before and after treatment. Paired t-test was used to compare between enamel mineral content change before and after treatment. Also saliva was collected to measure the change of pH of saliva after three and six months, using saliva -check buffer Testing. The results showed that there was a statistically significant increase in enamel mineral content after treatment. The mean±standard deviation values of percentage increase were 25.7±16.1%. Conclusion: Curodont proved to be an effective remineralizing agent for treatment of enamel WSLs that occurred after orthodontic treatment.

Purpose:To evaluate the antimicrobial effect of chitosan as root canal irrigant on Enterococcus faecalis in comparison to 3%NaOCL in experimentally infected primary anterior root canals. Materials and methods: Access cavity and mechanical preparation of root canals of 30 extracted primary anterior teeth which were then sterilized at autoclave at 121 0 for 15 minutes. These teeth inoculated with Enterococcus faecalis with reference strain ATCC 19433.Then grouped into three groups which were irrigated with 3%NaOCl, 0.5% chitosan and saline respectively. Samples were cultured on bile auscline agar incubated at 37 0 for 24 hours. Counting of colony forming units formed before and after irrigation was performed. Results: Chitosan had higher antimicrobial effect than saline and lower than NaOCl. Statistical analysis between the groups revealed that there was a statistically significant difference between the three irrigants (P-value = 0.001). Conclusion: Chitosan solution can be used as a natural alternative to sodium hypochlorite in root canal irrigation, but may need to increase its concentration or the time of application inside the root canals and also should be supported by in vivo studies. azhardentj@azhar.edu.eg