title: Addition of platinum and silver nanoparticles to toughen dental porcelain.
abstract: Several studies have investigated toughening porcelain that is layered over a frame or a core. The introduction of residual compressive stress to the surface of porcelain has been shown to be effective to strengthen it. In the present study, nanoparticles of precious metals of silver and platinum (rather than non-precious metals) were used to evaluate if they could increase the fracture resistance of porcelain. The addition of silver and platinum nanoparticles was found to improve the mechanical properties of porcelain since it increased both the Young's modulus and the fracture toughness of commercial porcelain.
authors.affiliation: Department of Prosthodontics, Division of Oral Functional Science and Rehabilitation, Asahi University School of Dentistry.
authors.forename: Tokushi
authors.initials: T
authors.lastname: Fujieda
authors.forename: Mitsunori
authors.initials: M
authors.lastname: Uno
authors.forename: Hajime
authors.initials: H
authors.lastname: Ishigami
authors.forename: Masakazu
authors.initials: M
authors.lastname: Kurachi
authors.forename: Nobukazu
authors.initials: N
authors.lastname: Wakamatsu
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Doi
mesh_terms: D003776:Dental Porcelain / Q000737:chemistry*; D055119:Elastic Modulus; D004577:Electron Probe Microanalysis; D006244:Hardness; D006358:Hot Temperature; D006801:Humans; D008422:Materials Testing; D055595:Mechanical Phenomena; D053758:Nanoparticles / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D013314:Stress, Mechanical; D013499:Surface Properties; D014961:X-Ray Diffraction
chemical_list: D003776:Dental Porcelain; D012834:Silver; D010984:Platinum