Setting and flexural properties of metal-resin composite using Ag-Cu particles as filler and chemical accelerator.
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.
Developmental Science of Oral Biomaterials, Graduate School of Dentistry at Niigata, The Nippon Dental University, 1-8 Hamaura-cho, Niigata 951-8580, Japan.
Hiroko
H
Soma
Yukio
Y
Miyagawa
Hideo
H
Ogura
D000704:Analysis of Variance; D001585:Benzoyl Peroxide; D003188:Composite Resins / Q000737:chemistry*; D003300:Copper; D003722:Dental Alloys / Q000737:chemistry*; D003793:Dental Restoration, Permanent; D004548:Elasticity; D008422:Materials Testing; D008689:Methacrylates; D018583:Pliability; D011108:Polymers / Q000737:chemistry; D011140:Polyurethanes; D012834:Silver
D003188:Composite Resins; D003722:Dental Alloys; D008689:Methacrylates; D011108:Polymers; D011140:Polyurethanes; C029824:urethane dimethacrylate luting resin; D012834:Silver; C034139:4-methacryloxyethyltrimellitic acid anhydride; D003300:Copper; D001585:Benzoyl Peroxide