Influence of thermal cycles in water on flexural strength of laboratory-processed composite resin
Influence of thermal cycles in water on flexural strength of laboratory-processed composite resin
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DOI：
10.1046/j.1365-2842.2001.00724.x
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发表时间：
2001-08-01
影响因子：
2.9
通讯作者：
Matsumoto, N
中科院分区：
文献类型：
--
作者：
Kawano, F;Ohguri, T;Matsumoto, N
最近推出了新一代实验室加工的含有亚微米玻璃填料的复合树脂，据称具有高强度。本研究的目的是评估水中热循环对几种实验室复合材料系统的弯曲强度和硬度的影响。新型实验室加工复合树脂（Artglass [AG]、Targis [TR] 和 Estenia [ES]）的弯曲强度显着高于传统树脂（Dentacolor [DC] 和 Cesead II [CS]）。对于大多数测试材料来说，热循环会导致弯曲强度降低，但不会降低硬度。结论是热循环影响实验室加工的混合型复合树脂ES、AG和TR的性能。然而，这些性能的变化比微细型复合树脂DC要小。因此，与DC相比，ES、AG和TR在使用期间可以保持更好的性能。
Recently a new generation of laboratory-processed composite resins containing submicron glass fillers was introduced, with claims of high strength. The purpose of this study was to evaluate the effect of thermal cycling in water on the flexural strength and hardness of several laboratory composite systems. The flexural strength of the new laboratory processed composite resins (Artglass [AG], Targis [TR] and Estenia [ES]) was significantly higher than that of conventional resins (Dentacolor [DC] and Cesead II [CS]). Thermocycling caused a reduction of the flexural strength but not a reduction of the hardness for most of materials tested. It was concluded that thermocycling affected the properties of the laboratory-processed hybrid type composite resin, ES, AG and TR. However, the changes of these properties were smaller than those of microfine type composite resin DC. Thus, ES, AG and TR may maintain better properties during service compared with DC.