Soma Hiroko, Miyagawa Yukio, Ogura Hideo
Developmental Science of Oral Biomaterials, Graduate School of Dentistry at Niigata, The Nippon Dental University, 1-8 Hamaura-cho, Niigata 951-8580, Japan.
Dent Mater J. 2003 Dec;22(4):543-55. doi: 10.4012/dmj.22.543.
A metal-resin composite material was experimentally prepared by mixing a powder consisting of Ag-Cu particles and BPO with a paste consisting of UDMA-based monomer and 4-META in the absence of tertiary amine. The working time and setting time were mainly affected by the amounts of 4-META, BPO and metal particles, most of them fulfilling the requirements for working time and setting time specified in ISO 4049:2000 in the present experimental conditions. The flexural strength ranged from 49.6 MPa to 77.8 MPa, and the highest value was obtained when the 4-META concentration was high and metal particle content was low. The flexural modulus of elasticity, ranging from 6.7 GPa to 11.9 GPa, significantly increased as the 4-META concentration and metal particle content increased. Based on its mechanical properties, this metal-resin composite in which metal particles are involved in the polymerization initiation system has the potential to be used as a dental restorative material.
在无叔胺的情况下，将由银铜颗粒和BPO组成的粉末与由基于UDMA的单体和4-META组成的糊剂混合，通过实验制备了一种金属树脂复合材料。工作时间和凝固时间主要受4-META、BPO和金属颗粒用量的影响，在本实验条件下，它们大多满足ISO 4049:2000规定的工作时间和凝固时间要求。弯曲强度范围为49.6MPa至77.8MPa，当4-META浓度高且金属颗粒含量低时可获得最高值。弯曲弹性模量范围为6.7GPa至11.9GPa，随着4-META浓度和金属颗粒含量的增加而显著增加。基于其机械性能，这种金属颗粒参与聚合引发体系的金属树脂复合材料有潜力用作牙科修复材料。
