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

Double-masked research on effect and mechanism of polarized infrared light therapy to temporomandibular disorders (TMD)

Research Project

Project/Area Number 08457522
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 補綴理工系歯学
Research InstitutionNiigata University

Principal Investigator

NOMURA Shuichi  Niigata University, School of Dentistry, Professor, 歯学部, 教授 (40018859)

Co-Investigator(Kenkyū-buntansha) IWAKATA Shingo  Niigata University, Dental Hospital, Lecturer, 歯学部・附属病院, 講師 (90242445)
KOHNO Shoji  Niigata University, School of Dentistry, Professor, 歯学部, 教授 (50014098)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1997: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1996: ¥2,500,000 (Direct Cost: ¥2,500,000)
KeywordsLight irradiation therapy / skin blood flow / temporomandibular disorders (TMD) / VAS score / double-masked / interincisal distance of maximum opening / Jaw Dysfunction / Activity Limitation / 理学療法
Research Abstract

I.Short-term effects of the polarized light irradiation to TMD
30 patients (27 female and 3 males, aged from 11 to 76) were selected. Their chief complaints were TMJ pain or angle of mandible pain on opening and/or chewing, and so on. According to the criteria proposed by Japanese Society for Temporomandibular Joint, patients were classified into five groups. Light irradiation was applied to the most painful area for 10 minutes with 2 seconds on-2 seconds off cycle during each visit.
The level pain intensity was measured using Visual Analogue Scale(VAS). Interincisal distance of maximum opening was measured by ruler. Subjective estimates of Jaw Dysfunction and Activity Limitation were scored. The measurements of pre-irradiation, 2nd and 3rd visit were compared.
Results were as follows.
1)VAS score dropped significantly (P<0,01 : Wilcoxon signed rank test).
2)More than 50% reduction of the VAS score was observed among half of patients.
3)Average interincisal distance of maximum opening smoothly increased. Pain-free opening revealed the largest increment, and more than 10mm increment was observed among 25% of patients.
4)Scores of the Jaw Dysfunction and Activity Limitation were decreased significantly (P<O.0I : Wilcoxon signed rank test).
5)The best results were obtained among young Type I and II patients with short history of the present illness.
II.Efficacy and mechanism of the light irradiation therapy under double-masked study
The study was made to assess the efficacy of the polarized light irradiation to TMD by double-masked principle. The clinical responses described part I by sham irradiation was compared. Also, the skin blood flow by laser Doppler flowmetry and the skin temperature were measured. Consequently no definite conclusion can be drawn about the efficacy and mechanism of the polarized light irradiation. Further randomized clinical trials are needed in order to enable the benefits of light therapy to be more precisely and validly evaluated.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 三浦 香: "高齢者における顎関節症の臨床的観察" 老年歯科医学. 12・1. 26-31 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 野村修一: "嚥下時に顎関節部の疼痛を訴えた症例の嚥下運動分析" 日本顎関節学会雑誌. 9・1. 292 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 大橋 靖: "かむこと.のむこと.たべること-咀嚼の科学" 医歯薬出版株式会社, 270 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kaori Miura, Shuichi Nomura, Shoji Kohno, Mitsunori Monya, Gohsuke Kamo, Shingo Iwakata: "Clinical Study on Elderly Patients with TMD" Japanese Journal of Gerodontology. 12-1. 26-31 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Shuichi Nomura, Ritsuo Takagi, Shoji Kohno, Kazumasa Katoh, Gohsuke Kamo, Hiroyuki Ohtake, Yasushi Ohashi: "Analysis of condylar movement in TMJ pain caused by swallowing : clinical case." Journal of Japanese Society for Temporomandibular Joint. 9-1. 292 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 三浦 香: "高齢者における顎関節症の臨床的観察" 老年歯科医学. 12・1. 26-31 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 野村 修一: "嚥下時に顎関節部の疼痛を訴えた症例の嚥下運動分析" 日本顎関節学会雑誌. 9・1. 292 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 大橋 靖: "かむこと,のむこと,たべること-咀嚼の科学-" 医学薬出版株式会社, 270 (1996)

    • Related Report
      1997 Annual Research Report

URL: 

Published: 1996-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi