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Synergistic effects of physical movement stimulation and occlusal stimulation on mandibular morphology during growth

Research Project

Project/Area Number 20K10222
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57070:Developmental dentistry-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Shimizu Yasuhiro  東京医科歯科大学, 歯学部, 非常勤講師 (60631968)

Co-Investigator(Kenkyū-buntansha) 松本 芳郎  東京医科歯科大学, 歯学部附属病院, 講師 (20292980)
青木 和広  東京医科歯科大学, 大学院医歯学総合研究科, 教授 (40272603)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords顎骨成長 / 身体運動 / 軟食飼育 / 血中スクレロスチン / ストレスホルモン / 身体運動刺激 / 咀嚼刺激 / スクレロスチン / 顎骨形態
Outline of Research at the Start

これまで我々は、成長期における咬合刺激の低下に伴い顎骨の骨量が低下すること、さらに成長期マウスの咬合刺激低下モデルにおいてストレスホルモンの上昇を介して下肢骨の骨量が減少する可能性を報告してきた。
さらに我々は近年、成長期の身体運動刺激が下顎骨の形態変化に影響を与える可能性を明らかにした。
今回の目的は、成長期の骨代謝に影響を与える咀嚼運動および身体運動の関連を探ることである。

Outline of Final Research Achievements

BMC (bone mineral content) was measured using μCT in three different places in mandible, the condyle, masseter muscle attachment and second molar area. Soft diet group showed decrease in BMC in all areas, while exercise didn’t seem to affect mandibular BMC except in the masseter region in the hard diet group. BMC of the masseter muscle tends to increase with exercise, but it did not increase with exercise in the soft diet group.
Serum corticosterone levels were significantly higher in soft diet group, whereas serum Sclerostin (SOST) levels were higher in hard diet/exercise group.

Academic Significance and Societal Importance of the Research Achievements

良いかみ合わせの獲得には、成長期の正しい顎骨成長が必要である。
成長期の顎骨成長に身体運動刺激が影響を与えることを示したが、軟食飼育下(咬合刺激低下時)においてはその傾向が認められず、身体運動と咀嚼刺激の関連が示唆された。
今回に研究において、顎骨成長に関わる因子の解明の一助となったと考える。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (3 results)

All 2023 2022 2020

All Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Periostin splice variants affect craniofacial growth by influencing chondrocyte hypertrophy2023

    • Author(s)
      Ishihara Seiko、Usumi-Fujita Risa、Kasahara Yuki、Oishi Shuji、Shibata Kana、Shimizu Yasuhiro、Ishida Yuji、Kaneko Sawa、Sugiura-Nakazato Makoto、Tabata Makoto J.、Hosomichi Jun、Taniyama Yoshiaki、Ono Takashi
    • Journal Title

      Journal of Bone and Mineral Metabolism

      Volume: 41 Issue: 2 Pages: 171-181

    • DOI

      10.1007/s00774-023-01409-y

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Intermittent hypoxia induces turbinate mucosal hypertrophy via upregulating the gene expression related to inflammation and EMT in rats2020

    • Author(s)
      Kuma Yo-ichiro、Hosomichi Jun、Maeda Hideyuki、Oishi Shuji、Usumi-Fujita Risa、Shimizu Yasuhiro、Kaneko Sawa、Suzuki Jun-ichi、Yoshida Ken-ichi、Ono Takashi
    • Journal Title

      Sleep and Breathing

      Volume: online Issue: 2 Pages: 1-8

    • DOI

      10.1007/s11325-020-02162-6

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 成長期マウス運動刺激モデルを用いた身体運動刺激と下顎骨形態との関連2022

    • Author(s)
      清水康広、青木和広、小野卓史
    • Organizer
      第81回日本矯正歯科学会学術大会
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2025-01-30  

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