Association between White Spots on Permanent Anterior Tooth and, Caries Activity, and Caries Prevalence Among Japanese Primary School Children

  • HIRANO Keiko
    Okayama University Hospital Pediatric Dentistry
  • OKAZAKI Yoshihide
    Okayama University Hospital Pediatric Dentistry
  • YOSHIDA Emi
    Okayama University Hospital Pediatric Dentistry
  • KANAO Akira
    Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Behavioral Pediatric Dentistry
  • DU Xiaopei
    Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Behavioral Pediatric Dentistry
  • RODIS Omar
    Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Behavioral Pediatric Dentistry
  • MATSUMURA Seishi
    Okayama University Hospital Pediatric Dentistry
  • SHIMONO Tsutomu
    Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Behavioral Pediatric Dentistry
  • YAMAGISHI Atsushi
    Personal Health Care Products Laboratory, KAO Corporation
  • OSHINO Kazushi
    Personal Health Care Products Laboratory, KAO Corporation

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Other Title
  • 永久前歯に白斑を持つ小学生の齲蝕活動性に関連する要因

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Abstract

Primary school children (aged 9~12 years old, N=365) were checked for initial caries (white spot) on their permanent anterior teeth. It was investigated whether there is a difference between the white spot and no white spot group with caries activity test (Cariostat®), buffer capacity test (CAT 21 Buf Test®), saliva flow rate, oral moisture, and existence of caries and filling.The findings are as follows :1.55 children (15.1%) had white spots on their permanent anterior teeth (white spot group) There was no significant difference among the 3 grade group (4, 5, 6 grade) in the prevalence of their permanent anterior white spot.2.There was the significant difference between the white spot students group and no white spot group in Cariostat score (more than 2.5/less than 2) and caries prevalence (no caries/caries) by variant analysis. The rate of saliva flow, oral moisture and the rate of buffer capacity test showed no significant difference in any cut off points.3.There was significant difference between decayed surfaces and Cariostat score in the white spot group. The prevalence of high caries risk children in the white spot group had higher caries prevalence than the low caries risk children in the white spot group.

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