The effect of the amount of Lactobacilli on the results of a caries activity test (CAT 21 Test)

  • Okazaki Yoshihide
    Okayama University Dental School Hospital, Pediatric Dentistry
  • Higashi Tomohiro
    Okayama University Dental School Hospital, Pediatric Dentistry
  • Miyagi Atsushi
    Okayama University Dental School Hospital, Pediatric Dentistry
  • Hori Masahiko
    Okayama University Dental School Hospital, Pediatric Dentistry
  • Okamoto Yasuhiro
    Okayama University Dental School Hospital, Pediatric Dentistry
  • Doi Masanori
    Department of Pediatric Dentistry, Okayama University Dental School
  • Ying Ji
    Department of Pediatric Dentistry, Okayama University Dental School
  • Omar Rodis
    Department of Pediatric Dentistry, Okayama University Dental School
  • Matsumura Seishi
    Department of Pediatric Dentistry, Okayama University Dental School
  • Shimono Tsutomu
    Department of Pediatric Dentistry, Okayama University Dental School

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Other Title
  • 乳酸桿菌数が齲蝕活動性試験(CAT21テスト)の判定結果に与える影響について

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Abstract

This study was conducted to investigate the relationship of the Cariostat test (CAT 21 test) and the amount of Lactobacilli present in the saliva (Dentocult®-LBw) ith caries status in 228 preschool children.<BR>The effect of the amount of lactobacilli and how it affects the CAT 21 scores was also investigated.<BR>The following results were obtained;<BR>1. The caries prevalence rate and the mean dt scores of the subjects was 64.5% and 2.7, respectively.<BR>2. A highly significant correlation was seen between the CAT scores and the amount of Lactobacilli present, compared with the mean dt scores. (Spearman correlation p<0.001)<BR>3. The mean dt scores increased as the CAT scores increased. When the CAT score was 2.5 or higher, the mean dt scores also increased remarkably. (ANOVA p<0.01)<BR>4. The mean dt scores also increased as the Dentocult-LB scores increases. (ANOVA p<0.01)<BR>5. A highly significant correlation was seen between the CAT score and the amount of Lactobacilli present. It was observed that a low colony count of lactobacilli corresponded to a low CAT score (CAT 1.5 or lower) while a high colony count corresponded to a CAT score of 2.5 or higher.<BR>According to the results above, the study indicated that children who had a CAT score of 2.5 or higher, also showed a remarkably high Lactobacilli colony count.

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