title: Development of metal-resin composite restorative material. Part 4. Flexural strength and flexural modulus of metal-resin composite using Ag-In alloy particles as filler.
abstract: The flexural strength and flexural modulus of an experimental metal-resin composite, which used Ag-In alloy particle as the filler, were evaluated. The effect of acid treatment and heat treatment on the Ag-In alloy particle was investigated. The flexural strength of the experimental metal-resin composites ranged from 65.5 MPa to 91.0 MPa. The flexural strength of the metal-resin composite increased with the temperature of the heat treatment until 350 degrees C, but its effect varied with the concentrations of HCl of the acid treatment. A metal-resin composite, which used acid-treated and 350 degrees C heat-treated Ag-In alloy fillers, matched the requirement of strength of ISO 4049. The average of flexural modulus of the experimental metal-resin composite was 9.1 GPa. The flexural modulus of the metal-resin composite did not vary with the treatment conditions of the metal filler. The flexural modulus of a metal-resin composite, which used Ag-In alloy particle as the filler, was lower than that of Ag-Sn alloy metal-resin composite, which was reported previously. However, the flexural strength of the Ag-In alloy metal-resin composite was similar to that of Ag-Sn alloy metal-resin composite. We can control a flexural modulus of a metal-resin composite without decreasing flexural strength by choosing filler materials.
authors.affiliation: Department of Dental Materials Science, School of Dentistry at Niigata, The Nippon Dental University, Niigata city, Japan.
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Kakuta
authors.forename: Somchai
authors.initials: S
authors.lastname: Urapepon
authors.forename: Yukio
authors.initials: Y
authors.lastname: Miyagawa
authors.forename: Hideo
authors.initials: H
authors.lastname: Ogura
authors.forename: Masahiko
authors.initials: M
authors.lastname: Yamanaka
authors.forename: Chatcharee
authors.initials: C
authors.lastname: Suchatlampong
authors.forename: Apiwat
authors.initials: A
authors.lastname: Rittapai
mesh_terms: D000465:Algorithms; D000704:Analysis of Variance; D003188:Composite Resins / Q000737:chemistry*; D003722:Dental Alloys / Q000737:chemistry*; D004548:Elasticity; D004577:Electron Probe Microanalysis; D006047:Gold Alloys / Q000737:chemistry; D006358:Hot Temperature; D006801:Humans; D006851:Hydrochloric Acid / Q000737:chemistry; D007204:Indium / Q000737:chemistry; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D010316:Particle Size; D018583:Pliability; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D014001:Tin / Q000737:chemistry
chemical_list: D003188:Composite Resins; D003722:Dental Alloys; D006047:Gold Alloys; D008689:Methacrylates; D011109:Polymethacrylic Acids; D011140:Polyurethanes; D019279:Resin Cements; D007204:Indium; C029824:urethane dimethacrylate luting resin; C020946:triethylene glycol dimethacrylate; D011092:Polyethylene Glycols; C034139:4-methacryloxyethyltrimellitic acid anhydride; D014001:Tin; D006851:Hydrochloric Acid