title: Shock-absorbing behavior of five restorative materials used on implants.
abstract: The damping effect of five restorative materials used to veneer test crowns rigidly connected to a Brånemark implant and subjected to an impact force was measured. These materials included a gold alloy; a noble metal ceramic alloy; porcelain; a laboratory-processed, light-activated microfilled resin; and a heat- and pressure-polymerized poly(methyl methacrylate) resin. The two resins were found to reduce the impact force by about 50% when compared to porcelain or the alloys. The clinical significance of the results is discussed.
authors.affiliation: Department of Restorative Dentistry, University of Washington School of Dentistry, Seattle 98195.
authors.forename: S E
authors.initials: SE
authors.lastname: Gracis
authors.forename: J I
authors.initials: JI
authors.lastname: Nicholls
authors.forename: J D
authors.initials: JD
authors.lastname: Chalupnik
authors.forename: R A
authors.initials: RA
authors.lastname: Yuodelis
mesh_terms: D000180:Acrylic Resins; D000704:Analysis of Variance; D001732:Bite Force; D003188:Composite Resins; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D003764:Dental Materials; D003776:Dental Porcelain; D003799:Dental Stress Analysis; D003801:Dental Veneers; D004548:Elasticity; D006047:Gold Alloys; D008422:Materials Testing; D016876:Metal Ceramic Alloys; D008768:Methylmethacrylates; D014093:Tooth, Artificial
chemical_list: D000180:Acrylic Resins; D003188:Composite Resins; D015921:Dental Implants; D003764:Dental Materials; D006047:Gold Alloys; D016876:Metal Ceramic Alloys; D008768:Methylmethacrylates; C046981:ESPE Visio-Gem; D003776:Dental Porcelain