硬質レジン人工臼歯の衝撃緩衝能に関する研究  [in Japanese] Shock Absorbability of High-Abrasion-Resistance-Posterior Resin Teeth  [in Japanese]

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Abstract

High-abrasion-resistance-resin teeth are widely used to make removable dentures, instead of porcelain teeth and resin teeth, because of the high fracture toughness, high abrasion resistance, and so on. Shock absorbability is an important property of artificial teeth, because the impact force of th occlusal contacts is transmitted directly to supporting structure under a denture. The purpose of this study was to evaluate the shock absorbability of commercially available posterior teeth by a free drop-ball test with an accelerometer. The results were as follows:<BR>1. The maximum acceleration of porcelain teeth is greater than that of resin teeth and high-abrasionresistance teeth. High-abrasion teeth showed intermediate maximum acceleration between resin teeth and porcelain teeth.<BR>2. Porcelain teeth showed the shortest duration of maximum acceleration in the artificial teeth investigated. All of the high-abrasion-resistance teeth showed an intermediate duration of maximum acceleration between resin teeth and porcelain teeth. There was no significant difference among the high-abrasion teeth.<BR>3. Resin teeth showed excellent resistance impact force. The impact force of high-abrasionresistance teeth was intermediate between that of porcelain teeth and resin teeth.<BR>The results show that high-abrasion-resistance teeth have high shock absorbability compared with porcelain teeth.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 44(5), 675-682, 2000-10-10

    Japan Prosthodontic Society

References:  21

Codes

  • NII Article ID (NAID)
    10008156326
  • NII NACSIS-CAT ID (NCID)
    AN00197911
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    03895386
  • Data Source
    CJP  J-STAGE 
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