Observation of Fluorine Invasion Condition in White Spots of Human Enamel Treated with Fluoride

  • Tanaka Rin
    Department of Oral Anatomy, Tsurumi University, School of Dental Medicine
  • Motohashi Jun
    Tsurumi University Graduate School, School of Dental Medicine
  • Shiozaki Kazunari
    Department of Oral Anatomy, Tsurumi University, School of Dental Medicine
  • Tanaka Shu
    Department of Oral Anatomy, Tsurumi University, School of Dental Medicine
  • Choi Jaewon
    Tsurumi University Graduate School, School of Dental Medicine
  • Tsurumoto Akihisa
    Department of Preventive Dentistry and Public Health, Tsurumi University, School of Dental Medicine
  • Shimoda Shinji
    Department of Oral Anatomy, Tsurumi University, School of Dental Medicine

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There are few studies reporting observation of invasion state of fluorine applied for white spots of enamel as well as healthy parts with a non-invasive method. Thus we used EPMA method to observe fluorine invasion state in a normal human tooth. We clearly observed that more fluorine infiltrated in the decalcified porous structured enamel organ as compared to normal healthy enamel. Our results showed that when teeth were considered to be protected from caries by application of oral fluorine, more fluorine accumulation occurred in the white spot area as compared to healthy enamel section, suggesting its useful clinical use.

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