Study about pathogenic, environmental, and social factors of oral health in adult population by comparing Japan and South Korea

2013 Fiscal Year Final Research Report

• Project/Area Number: 22406034
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Social dentistry
• Research Institution: Kyushu University
• Principal Investigator: SHIMAZAKI Yoshihiro 九州大学, 歯学研究科(研究院), 共同研究員 (10291519)
• Co-Investigator(Kenkyū-buntansha): 山下 喜久 九州大学, 歯学研究科(研究院), 教授 (20192403) ; 江島 伸興 大分大学, 医学部, 教授 (20203630)
• Project Period (FY): 2010-04-01 – 2014-03-31
• Keywords: 医療・福祉 / 歯学 / 国際比較

Research Abstract

A comparison of national surveys on oral health suggested that the population of South Korea has better periodontal health status than that of Japan, despite their similar inherent background. Here, we investigated differences in oral bacterial assemblages between Korean and Japanese orally healthy adults. The microbiota of Japanese subjects comprised a more diverse community, with higher proportions of 17 bacterial genera, including Veillonella, Fusobacterium and Prevotella, as compared with those of Korean subjects. Conversely, Neisseria and Haemophilus species were present in much lower proportions in the microbiota of Japanese subjects. Because higher proportions of Prevotella and Veillonella and a lower proportion of Neisseria were implicated in periodontitis in our previous study, the results of this study suggest that the greater proportion of dysbiotic oral microbiota in the Japanese subjects is related to their higher susceptibility to periodontitis.

Research Products

• [Journal Article] Relationship between normal serum creatinine concentration and periodontal disease in Japanese middle-aged males (2013)
  • Author(s): Shimazaki Y, Kushiyama M, Murakami M, Yamashita Y
  • Journal Title: J Periodontol Volume: 84 Pages: 94-99
• [Journal Article] Gender differences in the association between metabolic syndrome and periodontal disease : the Hisayama Study (2013)
  • Author(s): Furuta M, Shimazaki Y, Takeshita T, Shibata Y, Akifusa S, Eshima N, Kiyohara Y, Ninomiya T, Hirakawa Y, Mukai N, Nagata M, Yamashita Y
  • Journal Title: J Clin Periodontol Volume: 40 Pages: 743-752
• [Journal Article] Periodontal status and metabolic syndrome in middle-aged Japanese (2012)
  • Author(s): Fukui N, Shimazaki Y, Shinagawa T, Yamashita Y
  • Journal Title: J Periodontol Volume: 83 Pages: 1363-1371
• [Journal Article] Discrimination of the oral microbiota associated with high hydrogen sulfide and methyl mercaptan production (2012)
  • Author(s): Takeshita T, Suzuki N, Nakano Y, Yasui M, Yoneda M, Shimazaki Y, Hirofuji T, Yamashita Y
  • Journal Title: Sci Rep Volume: 2 Pages: 215
• [Presentation] 分子疫学的手法を用いた宿主の健康に関わる口腔マイクロバイオームの探索 (2014)
  • Author(s): 竹下徹
  • Organizer: 第87回日本細菌学会
  • Place of Presentation: 東京
  • Year and Date: 2014-03-26
  • Invited
• [Presentation] Comparison of oral health and environment between Korean and Japanese population (2012)
  • Author(s): Yamashita Y
  • Organizer: The 2012 Annual Meeting of Korean Academy of Oral Health
  • Place of Presentation: Seoul
  • Year and Date: 2012-10-26
  • Invited
• [Presentation] Relationship between normal serum creatinine concentration and periodontal disease (2012)
  • Author(s): Shimazaki Y
  • Organizer: Japan-China Dental Conference 2012
  • Place of Presentation: Chengdu
  • Year and Date: 2012-04-27
• [Presentation] Relationship between amount of stimulated saliva and oral health status : the Hisayama Study (2012)
  • Author(s): Fu B
  • Organizer: Japan-China Dental Conference 2012
  • Place of Presentation: Chengdu
  • Year and Date: 2012-04-27