• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Elucidation of referred pain caused by myofacial pain of masticatory muscle

Research Project

Project/Area Number 19K19106
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57050:Prosthodontics-related
Research InstitutionNihon University

Principal Investigator

MASUDA Manabu  日本大学, 松戸歯学部, 専修医 (40822961)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords咀嚼筋筋痛 / 関連痛 / 筋硬度 / QST / 咀嚼筋
Outline of Research at the Start

口や顔の痛みは複雑であり、痛みの原因部位と異なる部位に発現する関連痛は診断を困難とする。その為、この関連痛を調べる検査方法の確立およびメカニズムの解明は、誤診や誤治療を防ぐためにも有用なものである。そこで本研究では口や顔の筋肉の触診条件の相違が関連痛の発現頻度および発現部位に及ぼす影響を検討し、筋肉の硬さや感覚を関連痛が出る人とでない人で測定比較することにより関連痛のメカニズムの解明を進める。

Outline of Final Research Achievements

This study aimed to determine if standardized palpation of the right masseter and temporalis muscles can evoke referred pain in individuals without TMD and compare the mechanical sensitivities in response to three different stimulus levels of palpation force and three different stimulus duration of palpation time. Participants comprised 64 pain-free individuals. The right masseter and temporalis muscle were equally divided into 15 test sites. Mechanical sensitivity was assessed with three mechanical stimuli (0.5kgf, 1kgf, or 2kgf) applied to the 15 test sites with three different durations (2s, 5s, or 10s). If the participant reported referred pain after a stimulus, they indicated areas of referred pain on a digital drawing. Our present results indicate that referred pain from the masseter and temporalis muscles were duration- and intensity-dependent processes originating from local stimuli.

Academic Significance and Societal Importance of the Research Achievements

補綴歯科治療において、咀嚼筋筋・筋膜痛を起因とした口腔顔面領域に生じる関連痛は診断をより困難なものとする。その口腔内の疼痛に対する検査および診断は非常に重要となるが、この咀嚼筋の筋・筋膜痛により生じる関連痛の発現機序は解明されておらず、またその検査方法も確立されていない。関連痛に関する検査方法の確立およびメカニズムの解明は、誤診や誤治療を防ぐためにも有用なものであり、臨床的意義は極めて高いものと考えられる。本研究では咀嚼筋から生じる関連痛の発現機序の一端を解明することを目的として、咬筋と側頭筋における加圧強度と加圧時間の相違が関連痛の発現頻度と発現部位に及ぼす影響を比較した。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (4 results)

All 2022 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (3 results) (of which Invited: 1 results)

  • [Journal Article] Standardized palpation of the temporalis muscle evoke referred pain and sensations in individuals without TMD2022

    • Author(s)
      Masuda M, Hayakawa H, Boudreau SA, Iida T, Svensson P, Komiyama O
    • Journal Title

      Clinical Oral Investigation

      Volume: 26 Issue: 2 Pages: 1241-1249

    • DOI

      10.1007/s00784-021-04096-z

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 口腔顔面痛 海外留学のすすめ2019

    • Author(s)
      増田 学
    • Organizer
      第24回日本口腔顔面痛学会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 咀嚼筋における触診条件の相違が関連痛発現に及ぼす影響2019

    • Author(s)
      増田 学
    • Organizer
      第128回 日本補綴歯科学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Comparison of standardized palpation between masseter and temporal muscles for referred pain and sensations in healthy individuals2019

    • Author(s)
      増田 学
    • Organizer
      第5回Oral Neuroscience in Osaka
    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi