LAUSR

BACKGROUND Severe periodontitis is the most prevalent disease of all conditions and a global public health problem. This is because of its high incidence and prevalence. However, there are few studies on the burden of periodontitis in different regions of the world. METHODS We extracted data on the incidence, prevalence, and disability-adjusted life years (DALYs) from the Global Burden of Disease Study (GBD) Results Tool as severe periodontitis burden measures. We also explored the global burden of severe periodontitis according to 21 world regions and sociodemographic indices (SDI). The Join-point model analyzed the temporal trends of major regions from1990 to 2019. The Age-period-cohort (APC) model was used to estimate age, period and cohort trends in severe periodontitis. RESULTS Globally, the age-standardized incidence rate (ASIR), age-standardize prevalence rate (ASPR) and Disability-adjusted life years (DALYs) rate increased from 1990 to 2019 (percentage change: 5.77%,7.78% and 8.01%respectively), with average annual percent change (AAPC) values of 0.2%, 0.3% and 0.3%, respectively. The region with the highest DALY rate in Western Sub-Saharan Africa with a value of 142.5 (56.3, 303.7) per 100000 in 2019. The ASIR, ASPR and DALY for the age effect of severe periodontitis show an increase followed by a decrease, the period effect shows an upward trend, the cohort effect shows an overall decreasing trend and the cohort (Relative risk) RRs for the incidence in some areas show a slight increase in recent years. CONCLUSIONS As a result, oral health varies significantly across regions. It is essential to address the inequalities in oral health between countries. Therefore, everyone should also take effective measures to prevent severe periodontitis risk factors in regions with low SDI. This article is protected by copyright. All rights reserved.