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Neuromuscular and skeletal adaptations following mandibular counterclockwise rotation accompanied by intrusion of molars with Skeletal Anchorage System (SAS) in Implant-Orthodontics

Research Project

Project/Area Number 14571879
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Surgical dentistry
Research InstitutionTohoku University

Principal Investigator

SUGAWARA Junji (2003-2004)  Tohoku University, Graduate School of Dentistry, Associate Professor, 大学院・歯学研究科, 助教授 (00005109)

長坂 浩 (2002)  東北大学, 大学院・歯学研究科, 助手 (70217983)

Co-Investigator(Kenkyū-buntansha) 高橋 美嘉子  東北大学, 大学院・歯学研究科, 助手 (60241642)
菅原 準二  東北大学, 大学院・歯学研究科, 助教授 (00005109)
Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2004: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2003: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2002: ¥1,800,000 (Direct Cost: ¥1,800,000)
Keywordsopenbite / intrusion of molars / orthodontic anchorplate / skeletal stability / occlusal force / masticatory muscle activity / mandibular movement / neuromuscular adaptation / インプラント矯正 / 咬合接触 / 筋電図 / 下顎運動 / 咬合高径 / 歯槽骨形態 / 顎骨位置 / 安定性 / 咀嚼機能
Research Abstract

The Skeletal Anchorage System (SAS) was newly developed for tooth movements in orthodontic treatment. It consists of titanium miniplates which are temporarily implanted in the basal bones as stationary anchorages. Although distalization and intrusion of teeth have been extremely difficult by traditional mechanotherapies, those are more easily achieved by SAS. With SAS, anterior open bite can be improved by the counterclockwise rotation of the mandible, accompanied by the intrusion of molars. However, it has been unknown about the influences of changing the vertical dimension by orthodontic intrusion of molars on masticatory muscle activities and dentoskeletal adaptations. In this paper, we introduced an outline of SAS and evaluated morphological and functional changes produced during the Implant-Orthodontics treatment with SAS in the anterior openbite patients. The dentoskeletal morphology was assessed through lateral cephalograms taken before and after treatment. Occlusal contact area … More , occlusal pressure, bite force, masticatory efficiency, levels of electromyogram (EMG) activity in some of the muscles of mastication, and chewing movement by mandibular kinesiograph (MKG) were measured on all subjects. The results in patients with anterior openbite were compared with those in controls with normal occlusion. Cephalometric evaluation revealed intrusion of upper and lower posterior teeth, counterclockwise rotation of the mandible and a significant decrease of anterior facial height (vertical occlusal dimension) during treatment. Before treatment, the openbite patients had masticatory efficiency, bite force and occlusal contact area significantly less than those of controls. The patients' masticatory muscle activity was relatively low during clenching and chewing. After treatment, masticatory efficiency, bite force and occlusal contact area increased, but they were still significantly lower than the control subject level. The masticatory muscles were working harmoniously, and their activity was much higher. The results of this study suggest that in openbite patients, function of the masticatory system is impaired and orthodontic correction by intrusion of molars with SAS improves both the morphological and functional deficits. A larger sample is needed to confirm these findings. Less

Report

(4 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report

Research Products

(16 results)

All 2005 2004 2003 2002 Other

All Journal Article (11 results) Book (1 results) Publications (4 results)

  • [Journal Article] Minibone Plates : The Skeletal Anchorage System2005

    • Author(s)
      Sugawara J, Nishimura M
    • Journal Title

      Semin Orthod 11

      Pages: 47-56

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Minibone Plates : The Skeletal Anchorage System.2005

    • Author(s)
      Sugawara J, Nishimura M
    • Journal Title

      Semin Orthod 11

      Pages: 47-56

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Distal movement of mandibular molars in adult patients with the skeletal anchorage system2004

    • Author(s)
      Sugawara J, Daimaruya T, et al.
    • Journal Title

      Am J Orthod Dentofacial Orthop 5

      Pages: 32-39

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Distalization of mandibular molars in adult patients with application of Skeletal Anchorage System (SAS).2004

    • Author(s)
      Sugawara J, Daimaruya T, Umemori M, Nagasaka H, Takahashi I, Kawamura H, Mitani H
    • Journal Title

      Am J Orthod Dentofacial Orthop 5

      Pages: 32-39

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Positional and morphologic changes of the mandibular condyle after mandibular distraction osteogenesis in skeletal class II patients.2004

    • Author(s)
      Azumi Y, Sugawara J, et al
    • Journal Title

      World J Orthod 5・1

      Pages: 32-39

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Distal movement of mandibular molars in adult patients with the skeletal anchorage system.2004

    • Author(s)
      Sugawara J, Daimaruya T, et al
    • Journal Title

      Am J Orthod Dentofacial Orthop 125・2

      Pages: 130-138

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Effects of maxillary molar intrusion on the nasal floor and tooth root using skeletal anchorage system in dogs2003

    • Author(s)
      Sugawara J, Daimaruya T, et al.
    • Journal Title

      Angle Orthod 73

      Pages: 158-166

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Effects of maxillary molar intrusion on the nasal floor and tooth root using skeletal anchorage system in dogs2003

    • Author(s)
      Daimaruya T, Takahashi I, Nagasaka H, Umemori M, Sugawara J, Mitani H
    • Journal Title

      Angle Orthod 73

      Pages: 158-166

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Treatment and posttreatment dentoalveolar changes following intrusion of mandibular molars with application of a skeletal anchorage svstem(SAS) for open bite correction2002

    • Author(s)
      Junji Sugawara, Un Bong Baik, et al.
    • Journal Title

      Int J Adult Orthod Orthognath Surg 17

      Pages: 243-253

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Treatment and posttreatment dentoalveolar changes following Intrusion of mandibular molars with application of Skeletal Anchorage System (SAS) for open bite correction.2002

    • Author(s)
      Sugawara J, Baik UB, Umemori M, Takahashi I, Nagasaka H, Kawamura H, Mitani H
    • Journal Title

      Int J Adult Orthod Orthognath Surg 17

      Pages: 243-253

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Seeking a consensus for Class III Orthodontic Treatment2002

    • Author(s)
      Sugawara J, Asano T
    • Journal Title

      (Tokyo Rinsho Shuppan Inc., Osaka) ISBN 4-8870-025-2

      Pages: 331-340

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Book] 反対咬合治療のコンセンサスを求めて2002

    • Author(s)
      菅原準二, 浅野央男
    • Total Pages
      466
    • Publisher
      東京臨床出版
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] Sugawara J, Baik UB, et al.: "Treatment and posttreatment dentoalveolar changes following intrusion of mandibular molars with application of a skeletal anchorage system(SAS) for open bite correction"Int J Adult Orthod Orthognath Surg. 17(4). 243-253 (2002)

    • Related Report
      2003 Annual Research Report
  • [Publications] Sugawara J, Daimaruya T, et al.: "Distal movement of mandibular molars in adult patients with the skeletal anchorage system"Am J Orthod Dentofacial Orthope. 125(2). 130-138 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Junji Sugawara, Un Bong Baik, Mikako Umemori, Hiroshi Nagasaka, et al.: "Treatment and posttreatment dentoalveolar changes following intrusion of mandibular molars with application of a skeletal anchorage system(SAS) for open bite correction"Int J Adult Orthod Orthognath Surg. 17・4. 243-253 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 菅原準二, 長坂浩, 梅森美嘉子, 他: "スケレタル・アンカレッジ・システム(SAS)とその実際"歯界展望. 99・2. 397-406 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2002-03-31   Modified: 2016-04-21  

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