Journal of
Dentistry and Oral Hygiene

  • Abbreviation: J. Dent. Oral Hyg.
  • Language: English
  • ISSN: 2141-2472
  • DOI: 10.5897/JDOH
  • Start Year: 2009
  • Published Articles: 137

Full Length Research Paper

Low dietary diversity among older Japanese adults with impaired dentition

Masanori Iwasaki*
  • Masanori Iwasaki*
  • Division of Preventive Dentistry, Department of Oral Health Science, Niigata University, Graduate School of Medical and Dental Sciences, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan. 5Division of Community Oral Health Development, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Yumi Kimura
  • Yumi Kimura
  • Center for Southeast Asian Studies, Kyoto University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Akihiro Yoshihara
  • Akihiro Yoshihara
  • Division of Oral Science for Health Promotion, Department of Oral Health and Welfare, Niigata University Graduate School of Medical and Dental Sciences, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Hiroshi Ogawa
  • Hiroshi Ogawa
  • Division of Preventive Dentistry, Department of Oral Health Science, Niigata University, Graduate School of Medical and Dental Sciences, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan. 5Division of Community Oral Health Development, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Takayuki Yamaga
  • Takayuki Yamaga
  • Division of Preventive Dentistry, Department of Oral Health Science, Niigata University, Graduate School of Medical and Dental Sciences, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan. 5Division of Community Oral Health Development, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Taizo Wada
  • Taizo Wada
  • Center for Southeast Asian Studies, Kyoto University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Ryota Sakamoto
  • Ryota Sakamoto
  • Center for Southeast Asian Studies, Kyoto University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Yasuko Ishimoto
  • Yasuko Ishimoto
  • Center for Southeast Asian Studies, Kyoto University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Eriko Fukutomi
  • Eriko Fukutomi
  • Department of Field Medicine, School of Public Health, Kyoto University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Wenling Chen
  • Wenling Chen
  • Department of Field Medicine, School of Public Health, Kyoto University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Hissei Imai
  • Hissei Imai
  • Department of Field Medicine, School of Public Health, Kyoto University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Michiko Fujisawa
  • Michiko Fujisawa
  • Center for Southeast Asian Studies, Kyoto University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Kiyohito Okumiya
  • Kiyohito Okumiya
  • Center for Southeast Asian Studies, Kyoto University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Michael C. Manz
  • Michael C. Manz
  • Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Toshihiro Ansai
  • Toshihiro Ansai
  • Division of Community Oral Health Development, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Hideo Miyazaki
  • Hideo Miyazaki
  • Division of Preventive Dentistry, Department of Oral Health Science, Niigata University, Graduate School of Medical and Dental Sciences, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan. 5Division of Community Oral Health Development, Kyushu Dental University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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Kozo Matsubayashi
  • Kozo Matsubayashi
  • Center for Southeast Asian Studies, Kyoto University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan. Department of Field Medicine, School of Public Health, Kyoto University, 2-6-1 Manazuru, Kokurakita-ku, Kitakyushu 803-8580, Japan.
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  •  Received: 31 March 2015
  •  Accepted: 16 April 2015
  •  Published: 31 May 2015

Abstract

 

The aim of this cross-sectional study was to investigate the relationship of dentition status, defined by the number of occluding pairs of natural teeth (OPNT) and removable denture fit, to food diversity among older Japanese adults. The study participants were 268 Japanese (mean age: 81.7 years) classified into four groups: (i) good dentition (n = 91; ≥5 OPNT), (ii) compromised dentition (n = 43; <5 OPNT), (iii) well-fitting dentures (n = 104; self-reported), and (iv) ill-fitting denture (n = 30; self-reported). Food diversity was assessed as a measure of dietary quality using the 11-item Food Diversity Score Kyoto (FDSK-11), which evaluates frequency of consumption of 11 main food groups (grains, potatoes, beans and soybean products, meat, fish and shellfish, eggs, milk and dairy products, vegetables, seaweed, nuts and fruits). Multivariable analysis of the differences in FDSK-11 score ranging from 0 to 11, with a higher score indicating greater food diversity, among the four groups was conducted using linear regression models with robust standard errors. The compromised dentition and self-perceived ill-fitting denture groups had significantly lower FDSK-11 scores than the good dentition group after adjusting for confounders (P < 0.05). A less-varied diet, as indicated by low FDSK-11 score, was observed in participants with fewer OPNT or ill-fitting dentures. Impaired dentition was associated with poor diet quality among older Japanese.

 

Key words: Epidemiology, elderly, diet, dental health.