A Preparatory Study on the Changing of the Mandibular Movement based on Hellman's Dental Stage

  • Hirai Shizuko
    Department of Pediatric Dentistry, Kagoshima University Dental School
  • Okazaki Masako
    Department of Pediatric Dentistry, Kagoshima University Dental School
  • Morinushi Takanobu
    Department of Pediatric Dentistry, Kagoshima University Dental School
  • Ogura Tadashi
    Department of Pediatric Dentistry, Kagoshima University Dental School

Bibliographic Information

Other Title
  • Hellmanの咬合発育段階に基づく下顎運動の変化についての予備的研究
  • On the Mandibular Border Movement, mainly
  • 主に限界運動について

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Description

The purpose of this study was to ascertain the relationship between the development of the stomatognathic system and the changing of the mandibular movement.<BR>The subjects consisted of 48 children without functional disorders of the stomatognathic system and were divided into groups from IIA to IIIC according to Hellman's dental stages.<BR>The Saphon Visi-Trainer was used as the analytic method. The mandibular border movement at the mandibular incisor was recorded using the Saphon Visi-Trainer Model 3, and was examined as to how it changed according to the progress of Hellman's dental stage.<BR>As a result, the following findings were obtained:<BR>1. According to the progress of Hellman's dental stage, the mandibular border movement was enlarged towards the anterior, exterior, inferior and posterior.<BR>2. Changing of the right and left maximal lateral occlusal positions of the mandible corresponding to the progress of Hellman's dental stage tended toward symmetry.<BR>3. Corresponding to the Hellman's dental stage, the paths of the protrusive and lateral gliding movements moved downward and showed downward convex curved lines.

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Details 詳細情報について

  • CRID
    1390282679662490496
  • NII Article ID
    130004880845
  • DOI
    10.11411/jspd1963.25.2_345
  • ISSN
    05831199
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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