Background The authors present an unusual, unreported oral adverse effect of COVID-19 vaccine as palatal petechiae lesions. Case presentation COVID-19 disease caused by severe acute respiratory syndrome coronavirus 2 has become a global health crisis and has caused millions of deaths worldwide. Vaccination programs have been initiated in many countries for COVID-19 prevention. The ChAdOx-nCoV-19 vaccine has been shown to provide a robust immune response in various clinical trials. It is well tolerated by recipients and has been associated with minor adverse effects. The COVISHIELD (ChAdOx-nCoV-19) vaccine developed by AstraZeneca/Oxford University is approved by the Government of India to be administered in a phased manner. We present the case of twin subjects who suffered various adverse effects after receiving the COVISHIELD vaccine; one of the twins presented with palatal petechiae lesions presumably caused by the vaccine. The lesions were self-limiting and required no treatment. Conclusion Oral lesions reported first time in our case should be correlated with similar lesions found post-COVID vaccines globally. There is a further need to ascertain a high level of scientific evidence and explore the biological plausibility underlying oral complications and COVID vaccinations.

Background: Facemasks are recommended to control the COVID-19 pandemic transmission. This study was conducted with a purpose to investigate the knowledge, attitude and practices among general population regarding the usage of facemask during COVID-19 pandemic to limit the spread of the corona virus disease.Methods: A cross sectional study was conducted through Google forms. Questionnaire consisted of 7, 3 and 5 questions on knowledge, attitude and practices respectively. Questionnaire was shared on social media. Score of 1 was assigned to correct response and score of 0 for incorrect response, thus making a maximum score of 7 for a subject. Accordingly, score was <3 depicts individual had poor knowledge. 3-5 and >5 had good and excellent knowledge respectively.Results: Out of total 500 participants, we had 242 (48.4%) males and 258 (51.6%) females. The age of participants ranged from 20 to 60 years. Majority of participants (25.2%) were from Kerala State. Almost 97.6% reported that it was necessary to wear mask in current situation. The overall mean knowledge score was 5. The mean knowledge score was higher among females (5.07%) as compared to males (4.93%) and the difference was statistically significant. When they were asked if they know the correct steps of wearing a mask, almost 82.5% reported “yes” but while asking for coverage of mask on face only 75% were aware of it correctly.Conclusions: The overall knowledge of our study population was good. The knowledge was excellent for the age group of 20–30 and post-graduates.

Background: Demonstration of safety is very significant with COVID-19 vaccines, not only for vaccine acceptance but also for trust in vaccination broadly. Therefore, it is crucial to understand various mistrusts regarding COVID-19 vaccine. The aim of the study was to investigate the knowledge and attitude regarding COVID-19 vaccine and its self-reported adverse effects among staffs and students of dental college in Himachal Pradesh. Materials and Methods: This was a descriptive, cross-sectional study conducted among the students and staff members of H. P. Government Dental College and Hospital, Shimla, Himachal Pradesh. All those who received the vaccine from January 22 to February 8, 2021, were included. The survey was divided into two sections. Section 1 of the questionnaire included 14 questions which were regarding the knowledge and attitude of COVID-19 vaccine, whereas Section 2 of the questionnaire included a table with 13 symptoms, and the participants were asked to check the postvaccine symptoms whichever they experienced with the duration. Results: Majority, i.e., 94 of the recipients had pain at the injection site which had a duration range of 24 h to 4–5 days. Of 111 participants, 88 had a symptom of chills lasting 8 h to 48–72 h. 74.5% were hesitant to treat patients due to COVID-19 infection worries. 75.4% considered the need to follow COVID-19 appropriate behaviors such as wearing mask, maintain social distancing, and not going to crowded places even after vaccination. Conclusion: Participants in this survey reported favorable attitudes toward vaccination. The commonly reported adverse effects of vaccination were pain at injection, chills, body ache, and fever.

Implant therapy is a widely used treatment modality for completely and partially edentulous patient. It gives excellent long term results and has made practice of dental implantology astonishingly widespread. Titanium dental implants have proved to be successful means of prosthetic rehabilitation for more than six decades. Recently, ceramics have been proposed as an alternative to titanium. Zirconia implants with better aesthetics, mechanical and biological properties are showing a promising future in dental implantology. This narrative review analyses the evidences to compare titanium and zirconium implant in a systemic manner. The paper includes the mechanical, biological and clinical consideration involving both implant materials.