Introduction: Periodontitis is an inflammatory disease distressing the tissue that surrounds the teeth. When it progresses, its can damage PDL (periodontal ligament) and can worsen the condition and causes bone loss. Coronavirus pandemic provokes severe acute respiratory syndrome. The dissemination of Covid-19 around the globe has serious consequences, including increase in oral health disease such as periodontitis. It has brought various challenges for health sector including dental professionals. This article details about bidirectional causality of SARS Covid19 with other confounding factors.

Material and Method: It was a Case control study conducted at Bahria University and Dental College. The Sample size was 72 calculated by using Open Epi version 3, power of test will be 80%. Statistical analysis was done using SPSS version 23.0. Significance was tested using Chi square test and logistics regression model at P-value ≤ 0.05.

Results:

There were total 150 participants, 85 agreed to participate in the study, Covid positive individuals mean age was [34.92±1.99] and Covid negative individuals mean age was

[32.44±2.05].Those individuals who had habit of smoking, were at high risk (risk odds=15.1) of having periodontal disease with significant p value (0.000). Individuals who spent less time on brushing were 1.553 times at higher risk of having periodontal disease with significant p value (0.03). Patients with poor gingival status showed odds ratio of 7.24 also had furcation involvement with odd ratios of 1.63, co-presenting recession with odds ratio of 2.32. Regression model for probing depth and SARS-CoV-2 history with probing depths ranging 3-4 mm are at 3.11 times higher risk, 5mm and beyond are extremely prone to develop risk of periodontitis and probing depth greater than equal to 6mm and had history of Covid19 showed severe bleeding in less than 30 seconds and very poor periodontal status.CAL in Covid history positive patients showed that out of 3 categories, groups of mild and moderate CAL had 6.22 times higher risk to developing periodontal complications. Patients with Covid19 history and alveolar bone loss, mean value of 69.4 % (25 in number) showed severe attachment loss.

Conclusion: The increased prevalence and severity of COVID19 complications may unfold clinical signs and symptoms of periodontitis and lead to exodontia of tooth.

Keyword: Covid19, Oral health, periodontal disease, Pandemic, Periodontitis, SARS