1. Pihlstrom BL, Michalowicz BS, Johnson NW. Periodontal diseases. Lancet. 2005; 366:1809–1820.
Article
2. Health Insurance Review & Assessment Service. Medical Treatment Expense Statistics for the first half of 2018. Gangwon: Health Insurance Review & Assessment Service;2018. p. 1–165.
3. Aida J, Ando Y, Akhter R, Aoyama H, Masui M, Morita M. Reasons for permanent tooth extractions in Japan. J Epidemiol. 2006; 16:214–219.
Article
4. Ministry of Health & Welfare. Korea Health Statistics 2012: Korea National Health and Nutrition Examination Survey (KNHANES V-3). Seoul: Ministry of Health & Welfare;2012. p. 62–63.
5. Sabbah W, Tsakos G, Chandola T, Sheiham A, Watt RG. Social gradients in oral and general health. J Dent Res. 2007; 86:992–996.
Article
6. Dalla Vecchia CF, Susin C, Rösing CK, Oppermann RV, Albandar JM. Overweight and obesity as risk indicators for periodontitis in adults. J Periodontol. 2005; 76:1721–1728.
Article
7. Holmlund A, Holm G, Lind L. Severity of periodontal disease and number of remaining teeth are related to the prevalence of myocardial infarction and hypertension in a study based on 4,254 subjects. J Periodontol. 2006; 77:1173–1178.
Article
8. Kang YU, Kim HY, Choi JS, Kim CS, Bae EH, Ma SK, et al. Metabolic syndrome and chronic kidney disease in an adult Korean population: results from the Korean National Health Screening. PLoS One. 2014; 9:e93795.
Article
9. Marcotte-Chénard A, Deshayes TA, Ghachem A, Brochu M. Prevalence of the metabolic syndrome between 1999 and 2014 in the United States adult population and the impact of the 2007-2008 recession: an NHANES study. Appl Physiol Nutr Metab. 2019; 44:861–868.
Article
10. Xi B, He D, Hu Y, Zhou D. Prevalence of metabolic syndrome and its influencing factors among the Chinese adults: The China Health and Nutrition Survey in 2009. Prev Med. 2013; 57:867–871.
Article
11. Cameron AJ, Shaw JE, Zimmet PZ. The metabolic syndrome: prevalence in worldwide populations. Endocrinol Metab Clin North Am. 2004; 33:351–375.
Article
12. Alberti KGMM, Eckel RH, Grundy SM, Zimmet PZ, Cleeman JI, Donato KA, et al. Harmonizing the metabolic syndrome: a joint interim statement of the international diabetes federation task force on epidemiology and prevention; National heart, lung, and blood institute; American heart association; World heart federation; International atherosclerosis society; and International association for the study of obesity. Circulation. 2009; 120:1640–1645.
13. Kushiyama M, Shimazaki Y, Yamashita Y. Relationship between metabolic syndrome and periodontal disease in Japanese adults. J Periodontol. 2009; 80:1610–1615.
Article
14. Sakurai SI, Yamada SI, Karasawa I, Sakurai A, Kurita H. A longitudinal study on the relationship between dental health and metabolic syndrome in Japan. J Periodontol. 2019; 90:728–746.
Article
15. Löe H, Anerud A, Boysen H, Smith M. The natural history of periodontal disease in man: The rate of periodontal destruction before 40 years of age. J Periodontol. 1978; 49:607–620.
Article
16. Han K, Park JB. Age threshold for moderate and severe periodontitis among Korean adults without diabetes mellitus, hypertension, metabolic syndrome, and/or obesity. Medicine (Baltimore). 2017; 96:e7835.
Article
17. Korea Centers for Disease Control & Prevention. The Sixth Korea National Health and Nutrition Examination Survey (KNHANES VI). Osong: Korea Centers for Disease Control & Prevention;2013–2015. p. 3–212.
18. Park HS, Oh SW, Kang JH, Park YW, Choi JM, Kim YS, et al. Prevalence and associated factors with metabolic syndrome in South Korea-from the Korean National Health and Nutrition Examination Survey, 1998-. Korean J Obes. 2003; 12:1–14.
19. Kim S, Moon S, Popkin BM. The nutrition transition in South Korea. Am J Clin Nutr. 2000; 71:44–53.
Article
20. Yoo H, Kim Y. A study on the characteristics of nutrient intake in metabolic syndrome subjects. Korean J Nutr. 2008; 41:510–517.
21. Merchant AT, Pitiphat W, Rimm EB, Joshipura K. Increased physical activity decreases periodontitis risk in men. Eur J Epidemiol. 2003; 18:891–898.
22. Al-Zahrani MS, Borawski EA, Bissada NF. Increased physical activity reduces prevalence of periodontitis. J Dent. 2005; 33:703–710.
Article
23. Haber J, Wattles J, Crowley M, Mandell R, Joshipura K, Kent RL. Evidence for cigarette smoking as a major risk factor for periodontitis. J Periodontol. 1993; 64:16–23.
Article
24. Zimmermann H, Zimmermann N, Hagenfeld D, Veile A, Kim TS, Becher H. Is frequency of tooth brushing a risk factor for periodontitis? a systematic review and meta analysis. Community Dent Oral Epidemiol. 2015; 43:116–127.
Article
25. Han DH, Lim S, Kim JB. The association of smoking and diabetes with periodontitis in a Korean population. J Periodontol. 2012; 83:1397–1406.
Article
26. Oh JE. Association between smoking status and metabolic syndrome in men. Korean J Obes. 2014; 23:99–105.
Article
27. Lages EJP, Costa FO, Lages EMB, Cota LOM, Cortelli SC, Nobre-Franco GC, et al. Risk variables in the association between frequency of alcohol consumption and periodontitis. J Clin Periodontol. 2012; 39:115–122.
Article
28. Kongstad J, Hvidtfeldt UA, Grønboek M, Jontell M, Stoltze K, Holmstrup P. Amount and type of alcohol and periodontitis in the Copenhagen City Heart Study. J Clin Periodontol. 2008; 35:1032–1039.
Article
29. Morita T, Ogawa Y, Takada K, Nishinoue N, Sasaki Y, Motohashi M, et al. Association between periodontal disease and metabolic syndrome. J Public Health Dent. 2009; 69:248–253.
Article
30. Andriankaja OM, Sreenivasa S, Dunford R, DeNardin E. Association between metabolic syndrome and periodontal disease. Aust Dent J. 2010; 55:252–259.
Article