高齢者の根面う蝕の有病状況と歯冠う蝕との関連 Root Caries Prevalence and Association between Root Caries and Coronal Caries in the Elderly

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著者

    • 高野 尚子 TAKANO Naoko
    • 新潟大学大学院医歯学総合研究科口腔健康科学講座口腔保健推進学分野 Division of Preventive Dentistry, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University
    • 葭原 明弘 YOSHIHARA Akihiro
    • 新潟大学大学院医歯学総合研究科口腔健康科学講座口腔保健推進学分野 Division of Preventive Dentistry, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University
    • 小川 祐司 OGAWA Hiroshi
    • 新潟大学大学院医歯学総合研究科口腔健康科学講座口腔保健推進学分野 Division of Preventive Dentistry, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University
    • 廣富 敏伸 HIROTOMI Toshinobu
    • 新潟大学大学院医歯学総合研究科口腔健康科学講座口腔保健推進学分野 Division of Preventive Dentistry, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University
    • 山賀 孝之 YAMAGA Takayuki
    • 新潟大学大学院医歯学総合研究科口腔健康科学講座口腔保健推進学分野 Division of Preventive Dentistry, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University
    • 宮崎 秀夫 MIYAZAKI Hideo
    • 新潟大学大学院医歯学総合研究科口腔健康科学講座口腔保健推進学分野 Division of Preventive Dentistry, Department of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University

抄録

本研究の目的は,高齢者の根面う蝕の有病状態に関する記述統計的分析を行い,さらに根面う蝕と歯冠う蝕の有病状態との関連について分析を行うことである.調査対象者は,新潟市内在住の70歳600名である.分析対象者は,このうちの有歯顎者544名である.有病状況は,根面う蝕の所有者率,一人平均根面う蝕歯数,部位別,歯面別の分布で評価した.関連分析では,歯冠う蝕歯数群別の根面う蝕の所有者率および一人平均歯数を求め,次に根面う蝕の有無を目的変数にしてロジスティック回帰分析を行った.分析の結果,根面う蝕(根面DF)は男性の56.9%,女性の53.5%が所有し,平均根面う蝕歯数(根面DFT)は男性1.81(SD=2.41),女性1.41(SD=1.93)だった.根面末処置う蝕(根面D)はそれぞれ21.7,19.8%が所有し,平均根面未処置う蝕歯数(根面DT)は0.46(SD=1.10),0.32(SD=0.81)たった.部位別の分布は,上顎では犬歯,下顎では小臼歯に最も多く,歯面別では,頬側に最も多かった.歯冠う蝕との関連分析では,歯冠う蝕歯数が多い者ほど根面う蝕の所有者率が高く,根面DFTの平均が高かった.ロジスティック回帰分析にて口腔内のほかの要因を調整しても,歯冠う蝕歯数は根面う蝕の有無と有意(オッズ比1.08,p<0.001)に正の関連があった.以上の結果から,高齢者の根面う蝕の所有者率は高く,また,歯冠う蝕歯数は根面う蝕の所有の有無に関連があることが示された.

The purpose of this study was to investigate the prevalence and intraoral distribution of root caries in the elderly, and to identify the association between root caries and coronal caries. Six hundred noninstitutionalized adults aged 70 years in Niigata, Japan were examined for their oral status and general health status. A total of 544 subjects identified as dentate was available for assessment. The prevalence of root caries was evaluated as the percentage of the subjects with one or more root caries and the mean number of teeth with root caries. The intraoral distribution was evaluated as the mean percentage of exposed root surfaces affected by root caries in terms of tooth surface (buccal, lingual, distal, mesial) and tooth group (incisor, canine, premolar, molar). In the analysis of the associations, subjects were divided into 4 groups according to the number of coronal caries first, and then the prevalence of root caries was evaluated in each group. Next, logistic regression analysis where the dependent variable was one or more root caries and the independent variables including the number of teeth with coronal caries was performed. The percentage of male subjects with one or more root caries (DF) was 56.9% and that of female subjects was 53.3%. The mean number of root DFT was 1.81 (SD=2.41) per person for males and that for females was 1.41 (SD=1.93) per person, respectively. As for untreated root caries (D), the percentage of male subjects with one or more root D was 21.7% and that of female subjects was 19.8%. The mean number of root DT for males was 0.46 (SD=1.10) per person and that for females was 0.32 (SD=0.81) per person. The tooth type most commonly affected by root caries in the maxilla was canine and in the mandible it was premolar. The percentage of exposed root surfaces affected by root caries was 17.5% and 11.5%, respectively. As for tooth surface distribution, the buccal surfaces were the most commonly affected with a percentage of 15.8%. The mean number of teeth with root caries and the percentage of subjects with root caries increased with the number of coronal caries. Logistic regression analysis indicated that the prevalence of coronal caries was significantly associated with that of root caries (odds ratio=1.08, p<0.001) after adjusting for other oral variables. In conclusion, the results suggest that the prevalence of root caries in the elderly was high, and the prevalence of coronal caries was associated with root caries prevalence.

収録刊行物

  • 口腔衛生学会雑誌

    口腔衛生学会雑誌 53(5), 592-599, 2003

    一般社団法人 口腔衛生学会

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各種コード

  • NII論文ID(NAID)
    110004017982
  • 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  NII-ELS  J-STAGE 
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