Background: Poor oral hygiene provides an optimum environment for bacterial biofilms formation leading to the development of periodontal diseases. Currently, researchers focus on developing oral hygiene products such as mouthwash that contain available natural products with superior biocompatibility and a low cost. Aim: The aim of the study was to prepare mouthwash using red tea and to evaluate its antimicrobial and antioxidant properties. Materials and Methods: This study was performed as an in vitro study under a laboratory setting. Mouthwash was prepared using red tea in the lab. Subsequently the formulation was tested for its antimicrobial and antioxidant activity. Antimicrobial activity was conducted through agar well diffusion method. Antioxidant activity of the herbal mouthwash was tested using the DPPH assay at various concentrations. The obtained values were compared with that of the standard. The data was tabulated represented by the means of bar graphs. Results: There was an increase in the zone of inhibition of bacteria with an increase in concentration of mouthwash. DPPH assay for antioxidant activity revealed that at all concentrations the standard had more antioxidant activity compared to the herbal mouthwash. Throughout from 10 μl to 50 μl the antioxidant activity of the standard was greater than the prepared red tea mouthwash. Conclusion: Within the limitations of this study, Red tea mediated mouthwash was found to possess antioxidant and anti-inflammatory properties at varied concentrations.

Tooth brushing is a crucial part of oral hygiene. It is essential to stop plaque formation and reduce the susceptibility to cavities. Brushing technique, frequency and duration of tooth brushing are important factors in plaque reduction. This is often quite difficult in children because it requires dexterity. Dental professionals need adequate information about children’s oral hygiene to teach them and their parents. There are six methods of tooth brushing techniques. They differ in a number of aspects and are recommended for various age groups. The aim of the study is to evaluate the commonly taught brushing techniques by Dental students for children with complete permanent dentition. The data of brushing techniques advised were retrieved from the case sheets of patients. The collected data were tabulated in Excel. The data is represented with the help of bar graphs and statistically with the help of SPSS software. The statistical tests done were Chi-square tests and Correlation analysis. Modified bass is the most preferred brushing technique with a prevalence of 55.9%, followed by technique with a prevalence of 36.5% for children with complete permanent dentition. The modified bass technique is most commonly preferred for males with a prevalence of 52.9%. According to the patient's age Modified bass technique is most commonly preferred for 16-17 years (60%) and technique for 13 years (32.5%). Within the limitations of the study, it shows that the Modified bass technique is the most preferred brushing technique taught to the patients between the age group 13-17 years.

A Removable functional appliance is composed of polished acrylic shields and stainless steel wires prescribed for patients with more pronounced class II malocclusion or open bite. These appliances work comfortably with a patient’s inherent growth to produce the desired Skeletal or Dental development. It can be achieved by dentoalveolar effects, alteration of soft tissue and utilisation of greater Mandibular growth potential. The commonly used Removable functional appliances are Twin Block appliance, Activator, Bionator, Frankel appliance, etc. This study aims to assess the frequency of the usage of removable functional appliances in a hospital based set up. The data of patients undergoing Removable functional appliance therapy was retrieved from the case sheets of the patients.The collected data was tabulated in Excel and statistically analysed with the help of SPSS software. From the results obtained, Twin block appliance was the most prevalent Removable functional appliance with a frequency of 60.6%. Frankel appliance and Activator each had a frequency of 9.1%. Twin block appliances were mostly preferred for males than females whereas Activator is preferred mostly for females. Based on the age, Twin block appliance was preferred for the age group 10-15 years, Frankel appliance for 5-10 years, Activator and Other appliances for 10-15 years. Therefore, within the limits of this study, we observed that Twin block appliance was the most preferred Removable functional appliance used in the management of Class II malocclusion and the most common age group receiving appliance therapy is 10-15 years.

Ritonavir's pharmacodynamics raise questions regarding whether medication concentrations high enough to block the SARS-CoV-2 proteases can be obtained. Ritonavir may have a therapeutic benefit at any stage of the disease, although pharmacodynamic issues and the absence of clinical benefit data among hospitalized COVID-19 patients cast doubt on this claim. To study the awareness on current status of usage of ritonavir in the management of COVID among dental students. This study, which is survey-based, involved a sample of 100 individuals and was carried out on the website Survey Planet. The study included undergraduate and graduate dental students. The dental students were given a questionnaire containing 10 questions. Their responses were gathered. The number and percentage were used to summarize the data. Dental students from Chennai showed adequate knowledge of COVID-19 in the medical environment. Postgraduate students were more aware about the current status of usage of Ritonavir for COVID-19. This study demonstrates the urgent necessity for all health-care workers to regularly implement educational interventions and training program on infection control procedures for COVID-19.