April 20, 2017, Amsterdam, The Netherlands: Results presented today from a prospective study in patients with irreversible scarring of the liver (cirrhosis) demonstrates that severe periodontitis (an inflammatory gum disease) strongly predicts higher mortality in this population, after adjustments for various risk factors. The study was presented at The International Liver Congress™ 2017 in Amsterdam, The Netherlands.
In Europe, cirrhosis is responsible for 1-2% of all deaths and is the leading cause of liver transplantation.1,2 Periodontitis is a bacterially induced inflammatory disease that affects the supporting tissues of the teeth, characterised by the deepening of periodontal pockets due to loss of connective tissue attachment and bone. Untreated, periodontitis may result in tooth loss. Periodontitis is prevalent in the adult population, with over 35% having periodontitis and 10-15% having severe forms of the disease.3,4 Several studies have assessed the association between periodontitis and cardiovascular diseases, cirrhosis, chronic kidney disease, diabetes mellitus, and respiratory diseases, and an increasing number of studies have suggested that periodontitis may affect the course of systemic diseases.5 Poor oral health and periodontitis are very frequent in patients with cirrhosis.5 In addition, studies have suggested that periodontitis is involved in the progression of liver diseases, and that it has a negative impact on the clinical course after liver transplantation.6,7
"Our study showed that severe periodontitis strongly predicted higher mortality in cirrhosis," said Lea Ladegaard Grønkjaer, PhD, RN, Aarhus University Hospital, Denmark, and lead author of the study. "Periodontitis may act as a persistent source of oral bacterial translocation, causing inflammation and increasing cirrhosis complications. As it can be treated successfully, however, we hope that our findings motivate more trials on this subject."
The study enrolled 184 consecutive patients with cirrhosis in whom oral health was assessed. Severe periodontitis was defined by standard periodontology criteria4 and patients were clinically followed-up for one year on average.
At study enrolment, 44% of patients had severe periodontitis. Nearly half of the included patients died during follow up. The association of periodontitis with mortality was adjusted for age, gender, cirrhosis etiology, Child-Pugh score, Model of End-Stage Liver Disease score, smoker status, present alcohol use, comorbidity, and nutritional risk score. The analyses demonstrated that severe periodontitis was associated with higher all-cause mortality. Mortality was mostly attributable to complications of cirrhosis.
"This study demonstrates the association between gum disease and risk of death in patients with liver disease – further studies are now required to determine if improving gum care can improve outcomes in patients with liver cirrhosis," said Prof Philip Newsome, Centre for Liver Research & Professor of Experimental Hepatology, University of Birmingham, United Kingdom, and EASL Governing Board Member.
About The International Liver Congress™
This annual congress is the biggest event in the EASL calendar, attracting scientific and medical experts from around the world to learn about the latest in liver research. Attending specialists present, share, debate and conclude on the latest science and research in hepatology, working to enhance the treatment and management of liver disease in clinical practice. This year, the congress is expected to attract approximately 10,000 delegates from all corners of the globe. The International Liver Congress™ 2017 will take place from April 19 – 23, at the RAI Amsterdam, Amsterdam, The Netherlands.
About The European Association for the Study of the Liver (EASL)
Since its foundation in 1966, this not-for-profit organisation has grown to over 4,000 members from all over the world, including many of the leading hepatologists in Europe and beyond. EASL is the leading liver association in Europe, having evolved into a major European Association with international influence, with an impressive track record in promoting research in liver disease, supporting wider education and promoting changes in European liver policy.
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Onsite location reference
Session title: Late breaker poster session
Time, date and location of session: 08:00 – 18:00, Thursday 20 April to Saturday 22 April, Hall 1
Presenter: Lea Ladegaard Grønkjaer, Denmark Abstract: Severe periodontitis predicts higher cirrhosis mortality (LBP-524)
1 EASL. The burden of liver disease in Europe. A review of epidemiological data. Available from: http://www.easl.eu/medias/EASLimg/Discover/EU/54ae845caec619f_file.pdf. Last accessed: April 2017.
2 European Liver Transplant Registry. Specific results by disease. Available from: http://www.eltr.org/Specific-results-by-disease.html. Last accessed: April 2017.
3 Eke PI, et al. Prevalence of periodontitis in adults in the United States: 2009 and 2010. Journal of Dental Research. 2012;91:914-920.
4 Page, et al. Case definitions for use in population-based surveillance of periodontitis. Journal of Periodontology. 2007(Suppl.);78:1387-1399.
5 Grønkjaer LL. Periodontal disease and liver cirrhosis: A systematic review. SAGE Open Medicine. 2015;3:2050312115601122. 3
6 Åberg F, et al. Association between dental infections and the clinical course of chronic liver disease. Hepatology Research. 2014;44:349-353.
7 Han P, et al. Interaction between periodontitis and liver diseases (review). Biomedical Reports. 2016;5:267-76.
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