歯根の骨置換性吸収により歯の移動が困難であった1例  [in Japanese] A case of bone-replaced root resorption preventing orthodontic tooth movement  [in Japanese]

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Author(s)

    • 奥野 瑛 Okuno Akira
    • 岩手医科大学歯学部口腔保健育成学講座小児歯科学分野 Division of Pediatric Dentistry, Department of Developmental Oral Health Science, Iwate Medical University
    • 三上 俊成 Mikami Toshinari
    • 岩手医科大学病理学講座病態解析学分野 Division of Oral Pathology, Department of Pathogenesis and Control of Oral Disease, School of Dentistry, Iwate Medical University
    • 武田 泰典 Takeda Yasunori
    • 岩手医科大学病理学講座病態解析学分野 Division of Oral Pathology, Department of Pathogenesis and Control of Oral Disease, School of Dentistry, Iwate Medical University
    • 田中 光郎 Tanaka Mitsuro
    • 岩手医科大学歯学部口腔保健育成学講座小児歯科学分野 Division of Pediatric Dentistry, Department of Developmental Oral Health Science, Iwate Medical University

Abstract

患児は6歳7か月の男児で, X線所見で上顎正中部に逆生の埋伏過剰歯を発見され近歯科医院より紹介来院し,当科にて上顎正中埋伏過剰歯の抜去を行った.同患者は, 2年半後,近医において,上顎右側中切歯と上顎右側側切歯の萌出遅延と診断されたため,その治療目的で,本院に再度受診した.側切歯は犬歯の圧迫により高度に歯根吸収を生じていた.そのため,中切歯をリンガルアーチならびにマルチブラケット装置による牽引を試みたが,中切歯の移動は認められなかった.その後, 2回中切歯の亜脱臼と外科的処置を併用し,牽引を続行したが,中切歯の挺出はみとめられず,抜歯に至った.抜去歯には遠心舌側歯頸部に陥凹が認められるとともに,病理組織所見では骨置換性の根吸収が生じていた.

A 6-year and 7months old boy was referred to our clinic for treatment of a maxillary supernumerary tooth fonnd on a routine X-ray photo taken by a neighborhood dentist. The supernumerary tooth was extracted. After 2.5 years, he visited us again for the delayed eruption of his maxillary central and lateral incisors. The updated X-ray photos revealed severe root resorption on the lateral incisor caused by the permanent canine. Traction was attempted only on the central incisor. Despite our efforts to tractate the central incisor using appliances such as lingual arch and mulchibracket, no movement was found. Because traction was not successful even with two subluxation attempts, the central incisor was finally extracted. The extracted tooth had a defect on the distolingual cervical root area and histological examination showed severe deposition of bone into the defected lesion.

Journal

  • Dental Journal of Iwate Medical University

    Dental Journal of Iwate Medical University 38(3), 117-123, 2014

    The Dental Society of Iwate Medical University

Codes

  • NII Article ID (NAID)
    110009767214
  • Text Lang
    JPN
  • Article Type
    departmental bulletin paper
  • ISSN
    0385-1311
  • Data Source
    NII-ELS  IR  J-STAGE 
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