title: Strengthening composite resin restorations with ceramic whisker reinforcement.
abstract: Due to their tendency to fracture, current composite formulations are unsuitable for use in large stress-bearing direct posterior restorations that involve cusps. This study investigated the use of single-crystalline ceramic whiskers for the reinforcement of composite resins. The whisker-reinforced composite materials exhibited physical characteristics (i.e., flexural strength, work-of-fracture, and elastic modulus) that were significantly greater (P < 0.05; Student's t test) than those of traditional composite formulations. The experimental materials also had a surface smoothness that was essentially comparable to hybrid composite control specimens.
authors.affiliation: Paffenbarger Research Center, American Dental Association Health Foundation, Building 224, Room A153, Gaithersburg, MD 20899-8546, USA. hockin.xu@nist.gov
authors.forename: H H
authors.initials: HH
authors.lastname: Xu
authors.forename: G E
authors.initials: GE
authors.lastname: Schumacher
authors.forename: F C
authors.initials: FC
authors.lastname: Eichmiller
authors.forename: J M
authors.initials: JM
authors.lastname: Antonucci
mesh_terms: D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D002516:Ceramics / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D003461:Crystallography; D003764:Dental Materials / Q000737:chemistry*; D003775:Dental Polishing; D003793:Dental Restoration, Permanent; D004548:Elasticity; D006801:Humans; D008422:Materials Testing; D018583:Pliability; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D017655:Silicon Compounds / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties; D014783:Viscosity
chemical_list: D003188:Composite Resins; D003764:Dental Materials; D011109:Polymethacrylic Acids; D017655:Silicon Compounds; C111840:flowable hybrid composite; C020946:triethylene glycol dimethacrylate; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate; C032734:silicon nitride