Miyagawa Y, Urapepon S, Ogura H, Honda N
Advanced Research Center, School of Dentistry at Niigata, Nippon Dental University, 1-8 Hamaura-cho, Niigata 951-8580, Japan.
Dent Mater J. 2000 Jun;19(2):164-72. doi: 10.4012/dmj.19.164.
Fifteen kinds of metal particles were examined to establish whether they could induce the setting of UDMA-based monomer containing BPO without amine under the presence of 4-META at room temperature. FT-IR spectra of the resultant set samples and the monomer were analyzed to see if the setting was caused by the polymerization. The effects of 4-META and BPO concentrations on the setting time were also studied using the metal particles that induced the setting very effectively. As-received Cu, Zn, Mo, Sn, Co, and In particles could initiate the polymerization of the monomer in combination with BPO and 4-META when they were moistened with water. All the three kinds of silver alloy particles examined also could initiate the polymerization, although pure silver metal particles could not. The presence of 4-META drastically shortened the setting time of the mixture of Cu particles and the monomer containing BPO, while higher concentration of BPO in the monomer significantly shortened the setting time.
研究了15种金属颗粒，以确定它们在室温下4-META存在的情况下，能否在无胺条件下引发含BPO的UDMA基单体固化。分析所得固化样品和单体的FT-IR光谱，以查看固化是否由聚合反应引起。还使用能非常有效地引发固化的金属颗粒研究了4-META和BPO浓度对固化时间的影响。收到的Cu、Zn、Mo、Sn、Co和In颗粒在用水湿润时，可与BPO和4-META一起引发单体聚合。所检测的三种银合金颗粒也能引发聚合反应，尽管纯银金属颗粒不能。4-META的存在显著缩短了Cu颗粒与含BPO单体混合物的固化时间，而单体中较高浓度的BPO显著缩短了固化时间。
