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Comprehensive Study of the Causes of Mandibular Tori

Research Project

Project/Area Number 18570223
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Anthropology
Research InstitutionNihon University

Principal Investigator

IGARASHI Yuriko  Nihon University, 松戸歯学部, 講師 (60277473)

Co-Investigator(Kenkyū-buntansha) KANAZAWA Eisaku  日本大学, 松戸歯学部, 教授 (70050648)
SUZUKI Kunihiro  日本大学, 松戸歯学部, 准教授 (30256903)
網干 博文  日本大学, 歯学部, 講師 (60212560)
近藤 信太郎  愛知学院大学, 歯学部, 准教授 (60186848)
山下 真幸  獨協医科大学, 医学部, 助教 (80255009)
Co-Investigator(Renkei-kenkyūsha) KONDO Shintaro  愛知学院大学, 歯学部, 准教授 (60186848)
YAMASHITA Masaki  獨協医科大学, 医学部, 助教 (80255009)
Project Period (FY) 2006 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥4,250,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2006: ¥1,000,000 (Direct Cost: ¥1,000,000)
Keywords下顎隆起 / 現代人 / 古人骨 / 遺伝因子 / 環境因子 / CT / 組織学 / 生体力学 / 縄文時代 / 現代 / 歯数 / 歯の位置異常の程度 / 咬耗量 / 年齢 / 骨密度 / 下顎骨内部構築 / 現代日本人 / 縄文時代人 / 鎌倉時代人 / 近代日本人 / 咀嚼力 / 遺伝率 / 現代日本人双子 / 咬耗 / 叢生
Research Abstract

88% of Jomon people and 83% of the present-day Japanese had palpable mandibular tori. In Yayoi, Kofun, Kamakura, Muromachi, Edo and modern groups, less than 70% people had palpable tori. 21% of the preset-day Japanese had developed tori, and in other groups, less than 10% had developed tori. Mandibular tori had proved to be influenced by genetic factor. Occlusal stress, lasting occlusal stress for long years could be environmental factor to develop tori, even though these factors are less than 30% of all factors.

Report

(6 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report   Self-evaluation Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (22 results)

All 2010 2009 2008 2007 2006 Other

All Journal Article (7 results) (of which Peer Reviewed: 2 results) Presentation (14 results) Book (1 results)

  • [Journal Article] 茨城県常陸大宮市から産出した長鼻類切歯化石2009

    • Author(s)
      国府田良樹, 鈴木久仁博, 長谷川善和, 安藤寿男, 飯泉克典
    • Journal Title

      城県自然博物館研究報告 12

    • Related Report
      2009 Final Research Report
  • [Journal Article] Observation of lateral mandibular protuberance in Taiwan macaque (Macaca cyclopis) using computed tomography imaging.2009

    • Author(s)
      Kondo S, Naitoh M, Futagami C, Hanamura H, Goto K, Ariji E, Takai M:
    • Journal Title

      Front Oral Biol Vol.13

      Pages: 60-64

    • Related Report
      2009 Final Research Report
  • [Journal Article] Frequency of mandibular tori in the present-day Japanese.2008

    • Author(s)
      Yuriko Igarashi, Saori Ohzeki, Kagumi Uesu, Takashi Nakabayashi, Eisaku Kanazawa
    • Journal Title

      Anthropological Science 116(1)

      Pages: 17-32

    • NAID

      10025704967

    • URL

      http://www.jstage.jst.go.jp/article/ase/116/1/116_17/_html

    • Related Report
      2009 Final Research Report
  • [Journal Article] Frequency of Mandibular Tori in present-day Japanese2008

    • Author(s)
      Yuriko Igarashi, Saori Ohzeki, Kagumi Uesu, Takashi Nakbayashi, Eisaku Kanazawa
    • Journal Title

      Anthropological Science 116

      Pages: 17-32

    • NAID

      10025704967

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 近代以前の日本人における下顎隆起の出現頻度について.2007

    • Author(s)
      大関紗織五十嵐由里子
    • Journal Title

      Anthropological Science(Japanese Series) 115(2)

      Pages: 97-107

    • NAID

      10020274494

    • URL

      http://www.jstage.jst.go.jp/browse/asj/115/2/_contents/-char/ja/

    • Related Report
      2009 Final Research Report
  • [Journal Article] 近代以前の日本人における下顎隆起の出現頻度について2007

    • Author(s)
      大関紗織・五十嵐由里子
    • Journal Title

      Anthropological Science(Japanese Series) 115

      Pages: 97-107

    • NAID

      10020274494

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Frequency of Mandibular Tori in present-day Japanese2007

    • Author(s)
      Yuriko Igarashi, Saori Ohzeki, Kagumi Uesu, Takashi Nakbayashi, Eisaku Kanazawa
    • Journal Title

      Anthropological Science 印刷中

    • NAID

      10025704967

    • Related Report
      2006 Annual Research Report
  • [Presentation] 下顎隆起の出現状況の時代変化と成因2010

    • Author(s)
      五十嵐由里子
    • Organizer
      日本解剖学会
    • Place of Presentation
      盛岡(口頭発表)
    • Year and Date
      2010-03-29
    • Related Report
      2009 Final Research Report
  • [Presentation] 下顎隆起の出現状況の時代変化と成因2009

    • Author(s)
      五十嵐由里子
    • Organizer
      日本人類学会
    • Place of Presentation
      東京(口頭発表)
    • Year and Date
      2009-10-03
    • Related Report
      2009 Final Research Report
  • [Presentation] 下顎隆起の出現状況の時代変化と成因2009

    • Author(s)
      五十嵐由里子, 他
    • Organizer
      日本人類学会
    • Place of Presentation
      シェーンバッハサボ-(東京)
    • Year and Date
      2009-10-03
    • Related Report
      2009 Annual Research Report
  • [Presentation] 日本人おける下顎隆起の出現頻度2009

    • Author(s)
      五十嵐由里子
    • Organizer
      日本解剖学
    • Place of Presentation
      岡山(口頭発表)
    • Year and Date
      2009-03-28
    • Related Report
      2009 Final Research Report
  • [Presentation] 下顎隆起の遺伝規定性2008

    • Author(s)
      五十嵐由里子
    • Organizer
      日本人類学会
    • Place of Presentation
      名古屋(口頭発表)
    • Year and Date
      2008-11-01
    • Related Report
      2009 Final Research Report
  • [Presentation] 下顎隆起の遺伝規定性2008

    • Author(s)
      五十嵐由里子
    • Organizer
      日本人類学会大会
    • Place of Presentation
      愛知学院大学
    • Year and Date
      2008-11-01
    • Related Report
      2008 Annual Research Report 2008 Self-evaluation Report
  • [Presentation] 現代日本人における下顎隆起の出現状況-10歳代での観察-2008

    • Author(s)
      五十嵐由里子
    • Organizer
      日本解剖学会
    • Place of Presentation
      大分(口頭発表)
    • Year and Date
      2008-03-29
    • Related Report
      2009 Final Research Report
  • [Presentation] 現代日本人における下顎隆起の出現状況-10歳代での観察-2008

    • Author(s)
      五十嵐由里子
    • Organizer
      日本解剖学会全国学術大会
    • Place of Presentation
      大分大学
    • Year and Date
      2008-03-29
    • Related Report
      2008 Self-evaluation Report
  • [Presentation] 現代日本人における下顎隆起の出現状況-10歳代における観察-2008

    • Author(s)
      五十嵐由里子・大関紗織・中林隆・吉田覚・金澤英作
    • Organizer
      日本解剖学会
    • Place of Presentation
      大分大学医学部
    • Year and Date
      2008-03-29
    • Related Report
      2007 Annual Research Report
  • [Presentation] 現代日本人における下顎隆起の出現状況について-10歳代における観察上2007

    • Author(s)
      五十嵐由里子
    • Organizer
      日本人類学会
    • Place of Presentation
      新潟(口頭発表)
    • Year and Date
      2007-10-07
    • Related Report
      2009 Final Research Report
  • [Presentation] 現代日本人における下顎隆起の出現頻度について-10歳代における観察-2007

    • Author(s)
      五十嵐由里子・大関紗織・中林隆・金澤英作
    • Organizer
      日本人類学会
    • Place of Presentation
      日本歯科大学新潟生命歯学部
    • Year and Date
      2007-10-07
    • Related Report
      2007 Annual Research Report
  • [Presentation] 現代日本人における下顎隆起の出現頻度の増加2007

    • Author(s)
      五十嵐由里子
    • Organizer
      日本解剖学会
    • Place of Presentation
      大阪(口頭発表)
    • Year and Date
      2007-03-29
    • Related Report
      2009 Final Research Report
  • [Presentation] 現代日本人における下顎隆起の出現頻度の増加2007

    • Author(s)
      大関紗織・五十嵐由里子・中林隆・金澤英作
    • Organizer
      日本解剖学会
    • Place of Presentation
      大阪国際会議場
    • Year and Date
      2007-03-29
    • Related Report
      2007 Annual Research Report
  • [Presentation] 下顎隆起の出現状況の時代差とその要因2006

    • Author(s)
      五十嵐由里子
    • Organizer
      日本解剖学会
    • Place of Presentation
      高知(口頭発表)
    • Year and Date
      2006-11-04
    • Related Report
      2009 Final Research Report
  • [Book] 歯科に役立つ人類学(下顎隆起とはなにか)

    • Author(s)
      五十嵐由里子
    • Publisher
      わかば出版(発行中)
    • Related Report
      2009 Final Research Report

URL: 

Published: 2006-04-01   Modified: 2016-04-21  

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