Comparison of the Occluding Ability of Dentinal Tubules with Different Morphology between Calcium Phosphate Precipitation Method and Potassium Oxalate Treatment

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  • SUGE Toshiyuki
    Department of Conservative Dentistry, Institute of Health Biosciences, University of Tokushima Graduate School
  • KAWASAKI Akiko
    Department of Conservative Dentistry, Institute of Health Biosciences, University of Tokushima Graduate School
  • ISHIKAWA Kunio
    Department of Biomaterials, Faculty of Dental Science, Kyushu University
  • MATSUO Takashi
    Department of Conservative Dentistry, Institute of Health Biosciences, University of Tokushima Graduate School
  • EBISU Shigeyuki
    Department of Restorative Dentistry and Endodontology, Division of Oral Infections and Disease Control, Osaka University Graduate School of Dentistry

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Description

The aim of this study was to evaluate the occluding ability of calcium phosphate precipitation (CPP) method and potassium oxalate treatment when each method was applied to dentin disks with different surface morphology. Occluding ability was observed by scanning electron microscopy. Irrespective of the diameter of the dentinal tubules, the CPP method showed a consistent occluding ability for dentinal tubules at the dentin surface, and that the depths of the precipitate formed in the dentinal tubules by CPP method were not significantly different. In contrast, the occluding ability of potassium oxalate treatment was reduced with increasing diameter of the dentinal tubules. However, the reduction of the occluding ability of potassium oxalate treatment was more markedly affected by the demineralization of dentin surface. Since the CPP method showed a consistent occluding ability irrespective of the diameter of the dentinal tubules, it is suggested that the CPP method would be a useful means for treating dentin hypersensitivity.

Journal

  • Dental Materials Journal

    Dental Materials Journal 24 (4), 522-529, 2005

    The Japanese Society for Dental Materials and Devices

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