title: Surface textures of composite resins after combined wear test simulating both occlusal wear and brushing wear.
abstract: The purpose of this study was to investigate the relation between the texture of worn surfaces of composite resins and the maximum wear depth.  Three types of composite resins were investigated: a hybrid composite resin consisting of irregular-shaped inorganic filler particles (APX); a composite resin which contained small, irregular-shaped, inorganic filler particles and large organic composite filler particles (SRE); and another which contained spherical inorganic filler particles and large organic composite filler (SDX). Surface profile measurement and elemental analysis were carried out on the worn surfaces of these three composite resins using an electron probe microanalyzer (EPMA). For the composite resin which exhibited the largest maximum wear depth, its surface texture was slightly rough with fine pores and grooves. For the composite resin with lowest maximum wear depth, it had a smooth worn surface due to the large organic composite filler being abraded during the combined wear test.
authors.affiliation: Department of Dental Materials Science, School of Life Dentistry at Niigata, The Nippon Dental University, 1-8 Hamaura-cho, Chuo-ku, Niigata951-8580, Japan. kakuta@ngt.ndu.ac.jp
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Kakuta
authors.forename: Amornrat
authors.initials: A
authors.lastname: Wonglamsam
authors.forename: Shin-Ichi
authors.initials: S
authors.lastname: Goto
authors.forename: Hideo
authors.initials: H
authors.lastname: Ogura
mesh_terms: D001732:Bite Force; D017554:Carbon Compounds, Inorganic / Q000737:chemistry; D003188:Composite Resins / Q000032:analysis / Q000737:chemistry*; D055117:Curing Lights, Dental; D003764:Dental Materials / Q000032:analysis / Q000737:chemistry*; D003766:Dental Occlusion; D003775:Dental Polishing / Q000379:methods; D019554:Dental Restoration Wear; D004577:Electron Probe Microanalysis; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000032:analysis / Q000737:chemistry; D053761:Nanocomposites / Q000032:analysis / Q000737:chemistry; D016062:Porosity; D017655:Silicon Compounds / Q000737:chemistry; D013052:Spectrometry, X-Ray Emission; D013499:Surface Properties; D014099:Toothbrushing / Q000295:instrumentation / Q000379:methods*
chemical_list: D017554:Carbon Compounds, Inorganic; C112828:Clearfil AP-X; D003188:Composite Resins; D003764:Dental Materials; D008689:Methacrylates; D017655:Silicon Compounds; C501838:Solare; C113676:Solidex; C022088:silicon carbide