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Practicing implant dentistry procedures is progressively strolling from specialists to the general dental practitioner. The increasing demand for the dental implant treatment requires a higher level of knowledge from clinical years’ dental students and interns. This study aimed to assess the knowledge and perception about implant dentistry among these students. A descriptive cross-sectional study was conducted where participants from the College of Dentistry, Gulf Medical University and Ajman University were requested to complete a validated questionnaire. Data was collected from clinical years’ students (4th, 5th years) and interns. A total of (n=219) responses were coded and statistical analysis was done by SPSS 20. Statistical significance was set as p <0.05. Most of the 4th and 5th year students showed an average level of knowledge about implant dentistry. While the majority of the interns showed a good level. There was no statistically significant difference in the knowledge between the students at both universities regarding implant dentistry. Knowledge and perception about dental implants in dentistry among clinical years’ dental students and interns vary at different academic levels, but not as expected. A lot of 5th year students and interns gave unsatisfactory answers despite their clinical experience compared to 4th year students. [ABSTRACT FROM AUTHOR]

Streptococcus Viridans can cause diseases of the heart valves known as Infective Endocarditis, in addition to causing periodontal disease. As an adjunct to mechanical plaque control, mouthwashes aid in the control and prevention of dental plaque biofilm. The aim of this study was to find out whether there is any difference in the antimicrobial efficacy between chlorhexidine and hyaluronic acid on the CFUs of Streptococcus Viridans. Commercially available Streptococcus Viridans isolates obtained from the American Type Culture Collection (ATCC 12392, USA) were used in this study. 0.1 mL volume of the prepared bacterial suspension was added to 3 serial dilutions (100%, 50% and 25% concentration) of Chlorhexidine mouthwash (CHX) and Hyaluronic acid mouthwash (HA) including NaCl (0.9%) which was the control. Following the incubation (for 0.5, 1, 1.5 and 5 min, at 37 °C). Chlorhexidine at 0.2% concentration showed significant reductions of CFUs/ml; (1,859 at 30 seconds, 1,105 at 1 minute, 936 at 1.5 minutes and 234 at 5 minutes) as compared to the control (CFU >106). Hyaluronic acid did not have an effect on the number of colonies with >106 CFUs/ml in all concentrations. Hyaluronic acid did not exhibit any antimicrobial effect on Streptococcus Viridans. [ABSTRACT FROM AUTHOR]