自立生活高齢者と要介護高齢者の口腔微生物叢の比較 Comparison of Oral Microflora between Independent and Dependent Elderly

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著者

    • 高田 将成 TAKADA Masanari
    • 日本歯科大学歯学部衛生学講座 Department of Preventive and Community Dentistry, The Nippon Dental University School of Dentistry
    • 佐藤 勉 SATO Tsutomu
    • 日本歯科大学歯学部衛生学講座 Department of Preventive and Community Dentistry, The Nippon Dental University School of Dentistry

抄録

自立生活高齢者(自立高齢者)と要介護高齢者の口腔微生物叢の差異を検討する目的で,調査開始時と1年後の2時点において歯垢中の微生物の検出を試みた.さらに,これらの微生物の検出状況と口腔状態,および口腔衛生習慣との関連性についても検討し,以下の結果を得た.自立高齢者(41名)における調査開始時の口腔微生物検出種数は,平均3.0±1.3種,1年後で平均4.3±1.7種であった.要介護高齢者(20名)における調査開始時の口腔微生物検出種数は,平均3.3±1.5種,1年後では平均3.5±1.6種であった.自立および要介護高齢者の口腔清掃状況はおおむね良好であったが,自立高齢者,要介護高齢者ともに好気性微生物ではCandida sp.,嫌気性微生物ではPrevotella melaninogenicaが最も高率に検出された.さらに両群ともに,好気性微生物に比べ嫌気性微生物で検出率が高いものが多く認められた.さらに,義歯を装着している要介護高齢者でCandida sp.の検出率が高かった.また,自立高齢者では1日の義歯洗浄回数が少ない者ほどCandida sp.とP. melaninogenicaの検出率が高くなる傾向がみられた.

In recent years, it has been shown that oral care in independent and dependent elderly people is effective for overall health management, such as for the prevention of deglutition pneumonia. However, there have been no studies that have examined in detail the oral microbial flora, which is a risk factor. Therefore, in the present study, we attempted to identify microbes in dental plaque at two time points, at the time of initiating the study and again one year later, with the aim of studying the differences in oral microbial flora in independent and dependent elderly subjects. We also examined the correlations between oral microbial flora and the oral conditions and oral habits of the subjects. The mean number of types of oral microbes found in the independent subjects (n = 41) was 3.0 ± 1.3 at the beginning of the study, and was 4.3 ±1.7 one year later. The corresponding values in the dependent subjects (n = 20) were 3.3 ±1.5 and 3.5 ± 1.6, respectively. In general, the oral cleanliness of the subjects was good. In both groups, the aerobic microbe Candida sp. And the anaerobic microbe Prevotella melaninogenica were detected at the highest rates. Furthermore, in both groups, anaerobic microbes were detected at higher rates than aerobic microbes. High rates of Candida sp. were also observed in dependent subjects with dentures. Finally, there was a negative correlation between the daily number of denture cleanings and the detection rate of Candida sp. and P. melaninogenica in the independent subjects.

収録刊行物

  • 口腔衛生学会雑誌

    口腔衛生学会雑誌 54(3), 178-188, 2004

    一般社団法人 口腔衛生学会

参考文献:  30件中 1-30件 を表示

被引用文献:  2件中 1-2件 を表示

各種コード

  • NII論文ID(NAID)
    110004014975
  • NII書誌ID(NCID)
    AN00081407
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    0023-2831
  • データ提供元
    CJP書誌  CJP引用  NII-ELS  J-STAGE 
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