Study on caries activity test. Evaluation of caries activity on Simplified ST MEDIA.

DOI Open Access
  • KAWAGUCHI Yoko
    Department of Preventive Dentistry and Public Health, Faculty of Dentistry, Tokyo Medical and Dental University
  • OHARA Satoko
    Department of Preventive Dentistry and Public Health, Faculty of Dentistry, Tokyo Medical and Dental University
  • ORITO Chizuko
    Department of Preventive Dentistry and Public Health, Faculty of Dentistry, Tokyo Medical and Dental University
  • OZAKI Fumiko
    Department of Preventive Dentistry and Public Health, Faculty of Dentistry, Tokyo Medical and Dental University
  • OKADA Shogoro
    Department of Preventive Dentistry and Public Health, Faculty of Dentistry, Tokyo Medical and Dental University
  • SAITO Hitoshi
    Department of Preventive Dentistry and Public Health, Faculty of Dentistry, Tokyo Medical and Dental University
  • KINOSHITA Yuichi
    Showa Yakuhin Kako Co., LTD. Research Institute

Bibliographic Information

Other Title
  • う蝕活動性試験に関する研究　　Ｓ・Ｔメディア簡便法のう蝕活動性の判定について
  • Evaluation of Caries Activity on Simplified S·T MEDIA®
  • S・Tメディア®簡便法のう蝕活動性の判定について

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Description

We applied the Snyder Test (Simplified S·T MEDIA®) to 351 4-month-olds and 278 18-month-olds. This caries activity test depends on the color change resulting from acid production by oral bacteria in a culture medium containing brom cresol green as the pH indicator.<BR>We evaluated the caries activity by two methods, color comparison with colorimetric tubes and measurement of pH in culture medium by pH meter. But the pH measured by color comparison did not coincide with the pH measured by pH meter in the samples of 114 4-month-olds (33.0%) and 96 18-month-olds (34.5%). We investigated the cause of this.<BR>From several experiments, we found that the presence of Veillonella in the saliva, the use of sticks to collect the saliva, and the ineffectiveness of brom cresol green as the pH indicator in the culture medium were the cause of these misjudged samples.<BR>To counter this, we added a drop of brom cresol green to culture medium at the time of evaluation. Then we were able to get the correct pH of the culture medium easily and evaluate caries activity accurately.

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Details 詳細情報について

  • CRID
    1390282679979506944
  • NII Article ID
    130001315639
  • DOI
    10.5834/jdh.36.601
  • ISSN
    21897379
    00232831
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • OpenAIRE
  • Abstract License Flag
    Disallowed

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