title: In vitro wear resistance, hardness and elastic modulus of artificial denture teeth.
abstract: In this study, the wear resistance, hardness, elastic modulus, and the correlations between them of artificial denture teeth at the sub-enamel layer were examined. Four types of tested artificial denture teeth consisted of 3 conventional acrylic resin teeth (Cosmo HXL, Major Dent, and Yamahachi FX), 1 high cross-linked acrylic resin teeth (Trubyte Bioform IPN), 2 composite resin teeth (SR Orthosit PE, and Yamahachi PX), and 1 porcelain teeth (ACE Teeth). The two-body wear test was performed using a custom made pin on disc apparatus. Volume and weight loss were measured. Hardness and elastic modulus were also assessed by using a nanoindentation system. The results suggested wear resistance varied among the denture tooth materials. Wear resistance of high cross-linked acrylic resin teeth was the lowest. A definite relation between wear resistance and mechanical properties of materials could not be found in this study.
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, 34 Henri-Dunant Rd., Patumwan, Bangkok, Thailand
authors.forename: Pii
authors.initials: P
authors.lastname: Suwannaroop
authors.forename: Pisaisit
authors.initials: P
authors.lastname: Chaijareenont
authors.forename: Natthavoot
authors.initials: N
authors.lastname: Koottathape
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Takahashi
authors.forename: Mansuang
authors.initials: M
authors.lastname: Arksornnukit
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry / Q000145:classification; D000537:Aluminum Oxide / Q000737:chemistry; D017554:Carbon Compounds, Inorganic / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry*; D003775:Dental Polishing / Q000379:methods; D003776:Dental Porcelain / Q000737:chemistry; D019554:Dental Restoration Wear; D055119:Elastic Modulus; D006244:Hardness; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D019904:Polymethyl Methacrylate / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry; D017655:Silicon Compounds / Q000737:chemistry; D013499:Surface Properties; D014093:Tooth, Artificial
chemical_list: D000180:Acrylic Resins; D017554:Carbon Compounds, Inorganic; D003188:Composite Resins; D003764:Dental Materials; D008689:Methacrylates; D011140:Polyurethanes; D017655:Silicon Compounds; D003776:Dental Porcelain; C029824:urethane dimethacrylate luting resin; D019904:Polymethyl Methacrylate; D000537:Aluminum Oxide; C022088:silicon carbide