クラウンの保持力に関する研究 : レジンモディファイドグラスアイオノマーセメントのサーマルサイクルによる検討

概要

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The purpose of this study was to clarify the long-term endurance of crown retention cemented with resin-modified glass-ionomer cements (RMGI) by thermal cycling simulating the oral environment. In this study, two kinds of cement, Fuji lute (FL) and Vitremer luting cement (VL), were selected, and Super bond C & B (SB), a resin system cement, and Fuji I (F I), a traditional GI cement, were also tested as controls. All specimens were cemented to metal abutments with each cement, and put through the thermal cycling (4°C-60°C-37°C) test 0 times, 5, 000 times, 10, 000 times, and 15, 000 times, respectively. The result was as follows: 1. The retention force of crowns cemented with FL showed little variation due to thermal cycling. 2. The retention force of crowns cemented with VL increased due to thermal cycling. 3. After 15, 000 times of thermal cycling, the values of FL and VL were similar to the value of SB, and these were about two times that of F I.
社団法人日本補綴歯科学会の論文
1998-12-10