総義歯患者の術前後における顎顔面形態の変化と咀嚼筋活動パターン  [in Japanese] Cephalometric Study Comparing Changes in the Facial Morphology and Mandibular Function Before and After Treatment in Complete Edentulous Patients  [in Japanese]

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Author(s)

    • 虫本 栄子 MUSHIMOTO Eiko
    • 岩手医科大学歯学部歯科補綴学第一講座 Department of Removable Prosthodontics, Iwate Medical University, School of Dentistry
    • 田中 久敏 TANAKA Hisatoshi
    • 岩手医科大学歯学部歯科補綴学第一講座 Department of Removable Prosthodontics, Iwate Medical University, School of Dentistry
    • 井上 大一 INOUE Daiichi
    • 岩手医科大学歯学部歯科補綴学第一講座 Department of Removable Prosthodontics, Iwate Medical University, School of Dentistry
    • 高間木 祐一 TAKAMAGI Yuichi
    • 岩手医科大学歯学部歯科補綴学第一講座 Department of Removable Prosthodontics, Iwate Medical University, School of Dentistry
    • 長谷 剛史 HASE Takeshi
    • 岩手医科大学歯学部歯科補綴学第一講座 Department of Removable Prosthodontics, Iwate Medical University, School of Dentistry

Abstract

It has been said that long-term denture wearers often undergo facial changes as a result of not only occlusal wear of the dentures and residual ridge resorption but also masticatory dysfunction. However, there are no references regarding analysis of morphological change in relation to the functional masticatory muscle activity which is fundamental to an understanding of maxillomandibular relation.<BR>The purpose of this study was to investigate whether or not a method of mandibular repositioning that changes the facial skeletal structure can correct mandibular dysfunction. Sixty patients were examined who required denture renewal. Diagnosis of these patients was made, and a clinical method, following standardized treatment, was determined for obtaining correct mandibular position. Patients were evaluated before and after treatment using lateral and P-A cephalogram, transcranial TMJ radiograph, and EMG for bilateral coordination patterns of masticatory muscles.<BR>The results were as follows:<BR>1. In long-term use of complete dentures, there was a loss of occlusal vertical dimension and the mandible rotated counterclockwisely resulting in an increase in relative prognathism.<BR>2. Loss of occlusal vertical dimension coupled with a habitually protruded mandible was corrected by sufficient clinical procedure to correct jaw relation.<BR>3. Mandibular function could not be achieved without correction of the facial skeletal structure.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 41(2), 302-311, 1997-04-01

    Japan Prosthodontic Society

References:  28

Cited by:  10

Codes

  • NII Article ID (NAID)
    10008166015
  • 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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