局所機能圧・負担圧に関する基礎的研究　　Ｖ‐３．　弾性裏装した上顎総義歯の中心こう合位および側方こう合位での緩衝効果

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  • 佐藤 仁
    日本大学大学院歯学研究科歯科臨床系専攻

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  • Fundamental Studies on Functional Pressure and Stress-Bearing. V-3. Buffer Effect on Maxillary Basal Seat under Centric and Lateral Occlusal Position by Resilient Relining Maxillary Complete Denture.
  • V-3. Buffer Effect on Maxillary Basal Seat under Centric and Lateral Occlusal Position by Resilient Relining Maxillary Complete Denture
  • V-3.弾性裏装した上顎総義歯の中心咬合位および側方咬合位での緩衝効果

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This study was conducted to investigate the load pressure below the basal seat of complete dentures with resilient relining and to elucidate the buffer effect of the functional pressure. A model, simulating the alveolar mucosa and pressure-displacement was prepared to investigate the use of completedentures with two kinds of resilient relining of different HDA (type A durometer hardness). Comparisons were made with the basal seat load pressure of acrylic resin base denture without relining.<BR>The load pressure had a noticeable buffer effect, and reduction of the basal seat was obtained in maxillarycomplete dentures at a functional pressure in resilient relining material when using a simulation model whichhad the approximate form, alveolar mucosa thickness, and pressure displacement of those of edentuloussubjects. Resilient relining material became noticeable in load pressure distribution for support functions.The effect increased when using resilient relining material with a small HDA. In addition, the need for a thickrelief chamber was suggested in the case of complete dentures with resilient relining compared with acrylicresin base dentures, as well as the need for setting the same post dam degree as that for acrylic resin basedentures.

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