Influences on the bonding strength of resin-based cements for luting evaluated with setting behavior by the measurement of degree of conversion

通过测量转化度评价凝固行为对粘合用树脂水泥粘结强度的影响

基本信息

批准号：
17592039
负责人：
FUJISHIMA Akihiro
金额：
$ 2.24万
依托单位：
Showa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17592039/
关键词：
Resin-based cement Bonding strength Setting behavior Degree of conversion Mechanical property

项目摘要

Seven kinds of resin-based cements for luting (5 composite type, 2 PMMA/MMA type) were evaluated by measuring shear bond strengths and mechanical properties, and inorganic fillers contents. Bonded surface of cp titanium (10x10x2mm) was polished or treated by sandblasting with 110μm alumina particles. The bonded surface was treated with a primer for metal (Epricord), then that was bonded by a resin-based cement with a cylindrical titanium specimen (Φ8mmx2mm). A shear bond test was performed using an universal testing machine. Diameteral tensile strength (DTS) was measured using a cylindrical specimen (Φ6mmxh3mm) of cured resin-based cements. Moreover, filler content was measured by an ash method. Composition of filler was analyzed by XRF. Filler was observed by backscattered electron images for the evaluations of characteristics.SBS of resin-based cements to cp titanium treated by sandblasting with 110μm alumina particles with a primer for metal showed 40-75MPa. These SBS were significantly higher than that of polished surface with a primer (2.0-3.7 times). DTS of resin-based cements showed 20-50MPa, and differed in each cement. There was a little relationship between the increased ratio of SBS and DTS of resin-based cements, nevertheless same primer treatment was applied for the bonded surface.Shape and composition of resin-based cements of composite type differed in each cement, and filler content showed 66〜75wt%. Relationship between filler content and DTS was not apparent comparing to resin composites. These result suggested that bond strength was influenced not only by mechanical properties of resin-based cements but also by curing behavior of cements greatly. Degree of conversion of resin-based cement by a film method analyzed with FT-IR indicated that a resin-based cement showed sufficient curing without light curing in spite of dual cure type. Therefore, analysis of curing behavior of resin-based cement was important to evaluate the bonding characteristics.

通过测量剪切键强度和机械性能以及无机填充物的内容来评估七种用于Luting的基于树脂的水泥（5种复合类型，2 PMMA/MMA类型）。用110μm氧化铝颗粒抛光或处理CP钛（10x10x2mm）的键表面。用金属（Epricord）处理键合表面，然后由基于树脂的水泥与圆柱钛样本（φ8mmx2mm）键合。使用通用测试机进行了剪切键测试。使用基于固化的树脂水泥的圆柱样品（φ6mmxH3mm）测量直径拉伸强度（DTS）。此外，填充含量是通过灰分方法测量的。 XRF分析了填充物的组成。通过反向散射的电子图像观察到填充物，以评估特征的评估。基于树脂的水泥对用110μm氧化铝颗粒处理的基于金属的氧化铝颗粒处理的CP钛的水泥可用于金属的底漆40-75mpa。这些SBS显着高于底漆（2.0-3.7次）的抛光表面。基于树脂的水泥的DT显示为20-50MPa，并且在每种水泥中都不同。在基于树脂的水泥的SB和DTs的增加之比之间几乎没有关系，但是，在每种水泥中，同样的底漆处理都被应用于粘合表面。在每种水泥中不同的复合类型的基于树脂的水泥的形状和组成，以及显示的填充物含量为66-75wt％。与树脂成分相比，填充含量与DT之间的关系并不明显。这些结果表明，键强度不仅受树脂水泥的机械性能的影响，而且还受水泥的固化行为的影响。通过使用FT-IR分析的膜方法对基于树脂水泥的转化程度表明，尽管有双重治疗，但基于树脂的水泥在没有光固化的情况下显示出足够的固化。因此，对基于树脂水泥的固化行为的分析对于评估键合特性很重要。