並列タイトル等Ce-TZP/Aを用いたテレスコープクラウンの水中環境下での維持力
一般注記We compared the retentive force of telescopic Ce-TZP/A crowns in water with the force in the dry state. Ce-TZP/A was used as the material for both the primary and secondary crowns. The half tapered angles of the primary crown were set to 2° and 4°. The retentive force was measured with applied loads of 25, 50, and 100 N on the occlusal surface of the secondary crown. The maximum resistance value during removal of the secondary crown was deemed to be the retentive force. The measurement of retentive force was performed in the dry state and in water for the same sample. The increased retentive force in water with loads of 25, 50 and 100 N was 2.5, 2.5 and 3.3 N, respectively, for crowns at a half tapered angle of 2°. It was 0.8, 1.1 and 2.1 N, respectively, for those at a half tapered angle of 4°. We found that the retentive force of telescopic Ce-TZP/A crowns in water was significantly greater than in the dry state. When manufacturing telescopic Ce-TZP/A crowns, it is necessary to consider the influence of saliva to evaluate the retentive force.
2019年度
コレクション(個別)国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文
受理日(W3CDTF)2022-02-06T04:33:19+09:00
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