ガイド傾斜角度の実験的変化が犬歯の脈動に及ぼす影響  [in Japanese] Influence of Changing the Inclination of Anterior Guidance Teeth on Periodontal Pulsation of the Canine Tooth  [in Japanese]

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Author(s)

    • 関本 智信 SEKIMOTO Toshinobu
    • 新潟大学大学院医歯学総合研究科摂食機能再建学 Division of Removable Prosthodontics, Niigata University Graduate School of Medical and Dental Sciences
    • 河野 正司 KOHNO Shoji
    • 新潟大学大学院医歯学総合研究科摂食機能再建学 Division of Removable Prosthodontics, Niigata University Graduate School of Medical and Dental Sciences

Abstract

目的: ガイドの傾斜角度の変化がガイド歯の歯周組織に及ぼす影響を歯の脈動の様相から評価した.<BR>方法: 歯の脈動の測定には, 非接触型の微小変位測定装置を使用した. 被験者はブラキシズム癖のない男性とブラキシズム癖のある男性として, 被験歯は上顎犬歯とした. 両被験者において安静時およびクレンチング後の歯の脈動を測定した.また, 被験者固有のガイドに対して10度, 20度急傾斜なガイド装置を就寝前に付与し, 翌朝に歯の脈動を測定した.<BR>結果: 1. 今回製作した微小変位測定装置により, 犬歯の脈動の測定が可能となった. 2. 安静時の歯の脈動はブラキシズム癖のない被験者とブラキシズム癖のある被験者では, 差異が認められなかった. クレンチング負荷後の歯の脈動は, ブラキシズム癖のない被験者では, 安静時の波形と同様であった. しかし, ブラキシズム癖のある被験者では波形の変化が認められた. 3. ブラキシズム癖のない被験者では, 10度急傾斜なガイドを付与したことによる歯の脈動の変化は認められなかった.また, 20度急傾斜なガイドを付与したことによりブラキシズム癖のある被験者のクレンチング後と同様の波形が認められた.<BR>結論: 本被験者において, 10度急傾斜なガイドは歯周組織が許容できる範囲内であった. 20度急傾斜なガイドは, 歯周組織が許容できないため, 不適切なガイド傾斜角であると判定した.

Purpose: The purpose of this study was to evaluate the influence of canine guidance inclination through periodontal pulsation.<BR>Materials and Methods: The measurement was completed using a tooth displacement transducer consisting of a photo sensor. Two healthy adult dentate subjects volunteered for this study. Subject A was a non-bruxer while subject B had a history of bruxism. The periodontal pulsation of both subjects before and after clenching tasks were measured. To evaluate the effect of canine inclination on the periodontal pulsation, the lingual surface of subject A's left canine was modified by attaching two metal guidances, consecutively. Metal guidances inclined up to 10 and 20 degrees were prepared, set on the patient's canine and remained in the mouth overnight. The periodontal pulsation before and after clenching tasks were measured the next day.<BR>Results: 1. No difference was found in the periodontal pulsation at rest of subjects A and B. The periodontal pulsation observed in Subject A was similar before and after clenching tasks. However, in subject B, the periodontal pulsation was different before and after clenching. 2. In subject A, the periodontal pulsation did not change by modifying the canine guidance inclination to 10 degrees. Conversely, a change was observed when the inclination was increased to 20 degrees. The periodontal pulsation curve observed was similar to that found in subject B (without canine modification).<BR>Conclusions: From the results, the following conclusions were drawn: 1. Data indicates that it is possible to measure the periodontal pulsation of canine tooth. 2. Tooth guidance inclined up to 10 degrees is acceptable to the periodontal pulsation. 3. Tooth guidance inclined up to 20 degrees is inappropriate and not acceptable to the periodontal pulsation. This means that this inclination is detrimental to the integrity of the periodontal pulsation.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 46(2), 175-184, 2002-04-10

    Japan Prosthodontic Society

References:  21

Codes

  • NII Article ID (NAID)
    10008156868
  • NII NACSIS-CAT ID (NCID)
    AN00197911
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    03895386
  • Data Source
    CJP  J-STAGE 
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