Relationship between wear resistance and porosity of resin cements formed by mixing.

混合形成的树脂水泥的耐磨性与孔隙率的关系。

• 批准号: 06671913
• 负责人: TORII Yasuhiro
• 金额: $ 1.28万
• 依托单位: Okayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06671913/
• 关键词: Resin cement; Porosity; Surface image analysis; Wear loss

In this study we measured the porosity of five commercial resin cements-Panavia21 (Kuraray) , Imperva Dual (Shofu) , Bistite Resin Cement (Tokuyama) , CR Inlay Cement (Kuraray) , Clapear DC (Kuraray) and investigated the relationship between the porosity and the characteristics such as viscosity, bending strength and wear resistance of these resin cements. The degree of porosity in the powder/liquid typed cements was ten-times as large as that in paste/paste typed cements. The powder/liquid typed cements had many pores of which diameter was more than 30 mum, while paste/paste typed cements had a lot of small ones less than 10 mum. In Bistite Resin Cement, Panavia21 and Clapearl DC,there were negative liner relationship between the porosity and viscosity. As for bending strength, more porous cements presented lower strengths. The order of wear loss was CR Inlay Cement>Panavia21>Imperva Dual>Clapearl DC>Bistite Resin Cement. The wear loss of the cements increased with the porosity. We also observed the wear resistance of the cements in vivo. The wear loss of CR Inlay Cement and Panavia21 was tended to be higher than those of other cements. However, unfortunately we could not find the relationship between the porosity and wear resistance of cements in vivo.

在这项研究中，我们测量了五种商用树脂水泥 - Panavia21 (Kuraray)、Imperva Dual (Shofu)、Bistite 树脂水泥 (Tokuyama)、CR Inlay 水泥 (Kuraray)、Clapear DC (Kuraray) 的孔隙率，并研究了孔隙率之间的关系以及这些树脂水泥的粘度、弯曲强度和耐磨性等特性。粉末/液体型水泥的孔隙度是膏体/膏体型水泥的十倍。粉/液型水泥有许多孔径大于30μm的孔隙，而膏状/膏体型水泥则有大量直径小于10μm的细小孔隙。 Bistite树脂水泥、Panavia21和Clapearl DC的孔隙率和粘度之间存在负线性关系。至于弯曲强度，多孔水泥的强度较低。磨损量大小顺序为 CR Inlay Cement>Panavia21>Imperva Dual>Clapearl DC>Bistite Resin Cement。水泥的磨损量随着孔隙率的增加而增加。我们还观察了骨水泥的体内耐磨性。 CR Inlay 水泥和 Panavia21 的磨损量往往高于其他水泥。然而，遗憾的是我们无法找到体内水泥的孔隙率和耐磨性之间的关系。