title: Deformation and flexural properties of denture base polymer reinforced with glass fiber sheet.
abstract: The purpose of this study was to investigate the deformation and flexural properties of acrylic and urethane polymers reinforced with glass fiber sheet. Four types of specimen--self-curing resin plate (R), light-curing oligomer plate containing a reinforcement (GO), and self-curing resin plate containing a reinforcement on one (GR) or both (GRG) sides--were prepared with three thicknesses: 1.5, 2.4, and 3.0 mm. Gaps between polymerized test specimen and a standard metal plate were measured at the corner (C), middle of the long sides (LS), and middle of the short sides (SS). The gaps for R were 0-2.0 microm. GO and GR markedly deformed at Points C, LS, and SS, and the degree of deformation increased as GO became thinner. Flexural strength was significantly increased by the reinforcement (p < 0.05). The flexural moduli of 3.0-mm thick R, GO, and GR were significantly smaller than that of 1.5-mm thick specimens.
authors.affiliation: Department of Biomaterials Science, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan. einak@ms.kagoshima-u.ac.jp
authors.forename: Takahito
authors.initials: T
authors.lastname: Kanie
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Arikawa
authors.forename: Koichi
authors.initials: K
authors.lastname: Fujii
authors.forename: Seiji
authors.initials: S
authors.lastname: Ban
mesh_terms: D003188:Composite Resins / Q000737:chemistry*; D003764:Dental Materials / Q000737:chemistry; D003819:Denture Bases; D005898:Glass / Q000737:chemistry*; D006801:Humans; D008027:Light; D008689:Methacrylates / Q000737:chemistry*; D018583:Pliability; D011108:Polymers / Q000737:chemistry; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D011140:Polyurethanes / Q000737:chemistry*; D019279:Resin Cements / Q000737:chemistry; D012821:Silanes / Q000737:chemistry; D013314:Stress, Mechanical; D013499:Surface Properties
chemical_list: D003188:Composite Resins; D003764:Dental Materials; D008689:Methacrylates; D011108:Polymers; D011140:Polyurethanes; D019279:Resin Cements; D012821:Silanes; C009753:fiberglass; C029824:urethane dimethacrylate luting resin; C017492:methacryloxypropyltrimethoxysilane; D019904:Polymethyl Methacrylate