The advent of COVID-19 has kept the whole world on their toes. Countries are maximizing their efforts to combat the virus and to minimize the infection. Since infectious microorganisms may be transmitted by variety of routes, respiratory and facial protection is required for those that are usually transmitted via droplets/aerosols. Therefore this pandemic has caused a sudden increase in the demand for personal protective equipment (PPE) such as gloves, masks, and many other important items since, the evidence of individual-to-individual transmission (through respiratory droplets/coughing) and secondary infection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). But the disposal of these personal protective measures remains a huge question mark towards the environmental impact. Huge waste generation demands proper segregation according to waste types, collection, and recycling to minimize the risk of infection spread through aerosols and attempts to implement measures to monitor infections. Hence, this review focuses on the impact of environment due to improper disposal of these personal protective measures and to investigate the safe disposal methods for these protective measures by using the safe, secure and innovative biological methods such as the use of Artificial Intelligence (AI) and Ultraviolet (UV) lights for killing such deadly viruses.

Introduction: For the patient’s dissatisfaction with the prosthesis, dentist must realize that a patient’s judgment of the treatment outcome is what defines prosthodontic success. All patient’s need is to have a denture which is firm and stable during function. An ill-fitting denture not only brings frustration to the patients but to the dentists as well. So all probable reasons for the looseness of complete denture should be evaluated by the dentist and hence every possible attempt should be made by the dentist to correct it. Aims and Obectives: The aim of this study was to assess the knowledge of looseness of newly fabricated complete denture and its management among dental students of third year, final year and internship, studying in an undergraduate dental college, in the Imphal city of Manipur. The objective of this study was to assess the relationship between the complete knowledge of complete denture fabrication and their practical implementation in the complete denture fabricational procedure. Materials and Methods: A descriptive, cross-sectional survey was conducted using a self-administered questionnaire involving the dental students of 3rd, 4th year and the students doing internship in the Department of Prosthodontics and Crown & Bridge at RIMS, Dental college. Total of 150 students participated in the study. Participants were distributed in three groups having 50 students each from 3rd year, 4th year, and students doing internship. All the  participants signed an informed consent before filling the questionnaire. Descriptive statistics included computation of frequencies and percentages. Nonparametric test, namely, chi-square test, was used for further data analysis; p-value <0.05 was considered statistically significant and vice versa. Results:. Among all 150 participants who were subjected to self-administered questionnaire, seventy eight (78) subjects (52%) reported that looseness was because of improper secondary impression. Eight (08) subjects (05.33% ) reported that looseness was because of under extension of the green stick compound for peripheral tracing. Three (03) subjects (02%) reported that looseness was because of the overextension of the flanges in peripheral tracing or border moulding. Fifty eight (58) subjects (38.66%) reported that looseness of the newly fabricated complete denture was because of improper posterior palatal seal area record. Three (03) subject (2%) reported that they were unaware of the reasons for the looseness of newly fabricated complete denture. Conclusion: The majority of the students of dental college have limited knowledge of the exact reason for the looseness of newly fabricated complete denture on the day of denture delivery. Students faced problem in its management in dental clinics. The looseness of a newly fabricated complete denture was because of the overextensions of the denture flanges as evaluated by Prosthodontist. Students of dental college should be made aware for the all the probable reasons for looseness of a newly fabricated complete denture. In 90% of the cases it is seen that overextension of the flanges is the most probable reason for an ill fitting, newly fabricated complete denture. Keywords: Complete Denture, Ill fitting denture, Peripheral tracing, Denture Flanges, Secondary Impression, Posterior Palatal Seal.

Platelet rich fibrin (PRF) is a novel surgical biomaterial which has shown immense healing and regenerative potential with diverse clinical applications. Surgical excision is a routinely employed treatment modality for mucosal oral lesions with or without grafting or repair of the base of the wound. We proposed a hypothesis that covering of the base of excised lesion with this platelet rich fibrin membrane can accelerate the rate of physiological healing process and regeneration. To evaluate the role, efficacy, advantages and adverse effects if any, of placement of PRF membrane grafts over surgical excision sites of oral mucosal lesions. Platelet rich fibrin membrane graft was prepared as per recommendation and established protocols. Patients were selected for surgical excision of localized, superficial oral mucosal lesions after meticulous clinical and radiological considerations and informed consent was taken. After laser excision with safe margins, the base of wound was covered with PRF membrane graft, stitched in place by 3-0 vicryl sutures. The operated site was clinically evaluated at regular intervals and a healing score was calculated and statistically tabulated on the basis of various parameters of healing. A total of 34 patients were included in the study with a male preponderance (21 males and 13 females). Satisfactory and clinically acceptable wound healing was observed in most of the patient with minimal morbidities. Surgical site demonstrated good healing score and clinically complete healing with good epithelialisation was achieved in all patients. Platelet rich fibrin membrane is an effective grafting biomaterial after excision of oral mucosal lesions as it enhances the rate of healing with minimal complications. We recommend further multicentre studies with higher sample size to explore its utility and clinical applications in different avenues of oral and head neck surgery.