咀嚼運動の分析による咀嚼機能の評価の信頼性 The Reliability of Evaluating Masticatory Function by Masticatory Analysis

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著者

    • 宮崎 仁 MIYAZAKI Jin
    • 日本歯科大学歯学部歯科補綴学教室第1講座 Department of Partial and Complete Denture, The Nippon Dental University, School of Dentistry
    • 志賀 博 SHIGA Hiroshi
    • 日本歯科大学歯学部歯科補綴学教室第1講座 Department of Partial and Complete Denture, The Nippon Dental University, School of Dentistry
    • 小林 義典 KOBAYASHI Yoshinori
    • 日本歯科大学歯学部歯科補綴学教室第1講座 Department of Partial and Complete Denture, The Nippon Dental University, School of Dentistry

抄録

目的: 咀嚼運動の分析による咀嚼機能の評価の信頼性を明らかにするため, 正常者と頭蓋下顎障害 (TMD) 患者の咀嚼運動の安定性を分析した.<BR>方法: チューインガム咀嚼時の経路の安定性を表す開閉口時側方成分と垂直成分のSD/OD (標準偏差/開口量), リズムの安定性を表す開閉口相時間, 咬合相時間, サイクルタイムの変動係数, 速度の安定性を表す開閉口時速度成分のSD/ODを指標として, 正常者50名 (正常群A) のデータから正常の基準を設定後, 新たに選択した正常者50名 (正常群B) とTMD患者50名 (TMD群) の咀嚼運動の安定性における特異度と敏感度を調べた.<BR>結果: 各指標値は, TMD群が正常群よりも有意に大きかった (p<0.01). 正常群Aから求めた一次的な正常範囲に正常群Aの全被験者が入る指標数から, 経路では2指標, リズムでは3指標, 速度では1指標以上を正常の基準に設定することができた. 正常群BとTMD群における特異度と敏感度は, 経路, リズム, 速度の各安定性の3項目中1項目の評価では72%以上, 2項目の評価では80%以上, 3項目すべてでの評価では90%以上のきわめて大きな値を示した.<BR>結論: 咀嚼運動の分析による咀嚼機能は, 経路, リズム, 速度の各安定性をすべて組み合せて評価するほうが個別あるいは2項目の組合せで評価するよりも, きわめて高い信頼性を得られることが示唆された.

Purpose: To clarify the reliability of evaluating masticatory function, the stability of the masticatory movement of healthy subjects and TMD (Temporomandibular disorders) patients were analyzed.<BR>Methods: The indicators used were SD/OD (standard deviation/opening distance) of lateral components of opening and closing, and of the vertical component, which show stability of path; the coefficient variation of opening, closing, occluding, and cycle time, which shows stability of rhythm, and SD/OD of the velocity component of opening and closing, which shows stability of velocity. A normal range was established from data of 50 healthy subjects (group A). Then another 50 healthy subjects (group B) and 50 TMD patients (TMD group) were used, to analyze the degree of specificity and sensitivity.<BR>Results: The TMD group had much higher values than group A and group B (p<0.01). Because it was possible to make all subjects of group A fall into the normal range by taking at least 2 indicators for path, at least 3 indicators for rhythm, and at least 1 indicator for velocity, these numbers of indicators were used as the standard for determining the stability of masticatory movement. Evaluating the specificity and sensitivity of group B and the TMD group by path, rhythm, and velocity, each of them individually showed a value greater than 72%, except for sensitivity of velocity stability. Evaluating by any two indices, the value was greater than 80%, and when all three indices were used together, the value was greater than 90%.<BR>Conclusions: It was concluded that it is more reliable to evaluate masticatory function with all of the indicators for stability of movement path, movement rhythm, and movement velocity, than with just one or two of the indicators.

収録刊行物

  • 日本補綴歯科學會雜誌 = The journal of the Japan Prosthodontic Society

    日本補綴歯科學會雜誌 = The journal of the Japan Prosthodontic Society 45(2), 283-294, 2001-04-10

    Japan Prosthodontic Society

参考文献:  47件中 1-47件 を表示

被引用文献:  6件中 1-6件 を表示

各種コード

  • NII論文ID(NAID)
    10007936581
  • NII書誌ID(NCID)
    AN00197911
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03895386
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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