関節円板前方転位症例における前方滑走運動時の顆路傾斜角  [in Japanese] Condylar Guidance lnclination during Protrusive Extrusion in the Temporomandibular Disorder Patients with Anterior Disc Displacement  [in Japanese]

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Author(s)

    • 長尾 亜希子 NAGAO Akiko
    • 岩手医科大学歯学部歯科補綴学第二講座 Department of Fixed Prosthodontics, School of Dentistry,Iwate Medical University
    • 金村 清孝 KANEMURA Kiyotaka
    • 岩手医科大学歯学部歯科補綴学第二講座 Department of Fixed Prosthodontics, School of Dentistry,Iwate Medical University
    • 鈴木 卓哉 SUZUKI Takuya
    • 岩手医科大学歯学部歯科補綴学第二講座 Department of Fixed Prosthodontics, School of Dentistry,Iwate Medical University
    • 佐藤 真 SATO Shin
    • 岩手医科大学歯学部歯科補綴学第二講座 Department of Fixed Prosthodontics, School of Dentistry,Iwate Medical University
    • 藤澤 政紀 FUJISAWA Masanori
    • 岩手医科大学歯学部歯科補綴学第二講座 Department of Fixed Prosthodontics, School of Dentistry,Iwate Medical University
    • 塩山 司 SHIOYAMA Tsukasa
    • 岩手医科大学歯学部歯科補綴学第二講座 Department of Fixed Prosthodontics, School of Dentistry,Iwate Medical University
    • 石橋 寛二 ISHIBASHI Kanji
    • 岩手医科大学歯学部歯科補綴学第二講座 Department of Fixed Prosthodontics, School of Dentistry,Iwate Medical University

Abstract

To understand the relationship between anterior disc displacement of the temporomandibular joint (TMJ) and condylar guidance inclination, condylar movements during protrusive movement were analyzed in 780utpatients (63 females and 15 males;mean age, 35.4±14.1y) having anteriorly displaced disc confirmed on magnetic resonance images. Thirty outpatients (18 females and 12 males; mean age, 37.8±14.5y) without disc displacement were also enroIled as a control group. Mandibular movement was recorded with a six-degree-of-freedom jaw tracking device, to obtain every 1-mm change in condylar guidance inclination during protrusive movement guided by anterior teeth.<BR>Since inclinations of the condylar path were significantly larger in the disc displaced group (36.7±12.6°) than in the control group (33.1±11.6°)(P<0.05;t-test), steep inclinations of the condylar path could be a contributing factor of anterior disc displacement of the TMJ. However, there was no statistical significance in the inclinations of the condylar path between disc displacement with reduction and without reduction. The results show that condylar guidance inclination has little association with disc reduction status.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 44(6), 814-820, 2000-12-10

    Japan Prosthodontic Society

References:  38

Cited by:  3

Codes

  • NII Article ID (NAID)
    10008156720
  • NII NACSIS-CAT ID (NCID)
    AN00197911
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03895386
  • Data Source
    CJP  CJPref  J-STAGE 
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