A case report : Apical barrier formation at the apical area after extended-period application of calcium hydroxide

DOI
  • Takayoshi NAGAHARA
    Hiroshima Prefecture (Nippon Kokan Fukuyama Hospital) Department of Periodontal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University
  • Katsuhiro TAKEDA
    Department of Periodontal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University
  • Tomoyuki IWATA
    Department of Periodontal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University
  • Hideki SHIBA
    Department of Biological Endodontics, Graduate School of Biomedical & Health Sciences, Hiroshima University

Bibliographic Information

Other Title
  • 水酸化カルシウム製剤の長期貼薬後根管根尖部にバリアーが認められた一症例

Search this article

Description

<p>Abstract : An apical foramen is sometimes unavoidably made too wide after mechanical root canal enlargement in order to eliminate bacteria. A wide foramen may lead to unsuccessful root canal filling. In a 60-year-old female patient, dental radiography and cone beam computed tomography revealed a large periapical lesion and external resorption of the maxillary right second premolar. This case was diagnosed as chronic apical periodontitis with external root resorption, and so infected root canal treatment was performed. The buccal root canal needed enlargement to the size of #80 to remove infected dentin. Obturation of the root canal by the conventional root canal filling with gutta-percha points was difficult. On the other hand, the palatal root had a clinically closed root canal at the apical area. Long-term use of calcium hydroxide was applied to encourage the closure of the widely-formed apical foramen with deposition of hard tissue. As a result, apical barrier formation at the apical area was observed under a microscope. Root canal filling was carried out by mineral trioxide aggregate. The CAD/CAM crown was set on the tooth. At 2-year clinical and radiographic follow-up, the affected region had almost completely healed.</p>

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top