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Development of microwave-cured composite resin inlay

微波固化复合树脂嵌体的研制

基本信息

批准号：
06671915
负责人：
URABE Hidenori
金额：
$ 1.34万
依托单位：
HIROSHIMA 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-06671915/
关键词：
Maicrowave Composite resin inlay Initiator Filler 表面処理剤マイクロ波重合

项目摘要

Commercial visible-light-cured composite resins have been used widely as direct anterior and posterior restoratives due to aesthetic merit. Recently, indirect posterior composites have been considered as restorative owing to easy handling. The polymerization method of indirect posterior composites has been generally used visible-light and post-cure by heat. On the other hand, there is a variety of curing cycles that can be used in the processing of acrylic denture base polymers. So that the application of microwave energy to polymerization of denture base acrylic resin is discussed. However, influence of microwave energy to curing performance on the multifunctional monomers are still not clarified well. Therefore, the purpose of the present study was (1) to investigate the effects of various concentrations of the benzoyl peroxide on the curing behaviors, (2) to evaluate the mechanical properties by different filler content in the experimental microwave-cured composit resin, and (3) to observe the additional filler conditions in the base monomer by SEM.The results showed that increasing of the benzoyl peroxide content improved the degree of cure, in this experimental resin system, mechanical strength (Compressive strength, Diametral tensile strength and Knoop hardness) was increased on the addition filler of 0.94mum size, and the isolated filler which were broken the conective part of base monomer and the surface of filler was observed by SEM.These results that the polymerization of multifunctional monomers by the microwave energy was valid newly cure method of indirect posterior composite resin and have great possibilities improvement of monomer and surface treatment material of filler.

由于美观的优点，商用可见光固化复合树脂已被广泛用作直接前牙和后牙修复材料。最近，间接后路复合材料由于易于操作而被认为具有修复性。间接后复合材料的聚合方法一般采用可见光和热后固化。另一方面，有多种固化周期可用于丙烯酸树脂义齿基托聚合物的加工。从而对微波能在义齿基托丙烯酸树脂聚合中的应用进行了探讨。然而，微波能量对多官能单体固化性能的影响仍不清楚。因此，本研究的目的是（1）研究不同浓度的过氧化苯甲酰对固化行为的影响，（2）评估实验微波固化复合树脂中不同填料含量的机械性能，以及（3）通过SEM观察基础单体中的附加填料条件。结果表明，在本实验中，过氧化苯甲酰含量的增加提高了固化程度添加0.94μm粒径的填料后，树脂体系的机械强度（压缩强度、径向拉伸强度和努普硬度）得到提高，并且通过SEM观察到基础单体与填料表面的连接部分被破坏的孤立填料。这些结果表明，微波能聚合多官能单体是一种有效的新型间接后复合树脂固化方法，具有很大的可能性填料单体及表面处理材料的改进。