RESUMO
The compatibility of four impression materials with 11 different die stones was tested. All the combinations tested performed within the 20 microns ADA standard.
Assuntos
Materiais para Moldagem Odontológica/normas , Modelos Dentários/normas , Sulfato de Cálcio , Teste de Materiais , Projetos Piloto , Polivinil , SiloxanasRESUMO
Based on polarization measurements, high Au alloys are highly corrosion-resistant and exhibit the lowest corrosion rates; intermediate Au, Ag, and Pd alloys with Cu are passive but exhibit higher corrosion rates. Twenty weight percent (w/o) In-Ag alloys exhibit active corrosion behavior at potentials only 100 mV noble to the corrosion potential.
Assuntos
Ligas Dentárias , Revestimento para Fundição Odontológica , Ligas de Ouro , Prata , Corrosão , Ligas Dentárias/análise , Revestimento para Fundição Odontológica/análise , Técnica de Fundição Odontológica , Eletroquímica , Ouro/análise , Ligas de Ouro/análise , Paládio/análise , Potenciometria , Prata/análise , Soluções , UreiaRESUMO
Examination of the aluminum foil pouch used in some pre-measured amalgam capsules for mercury packaging revealed the formation of an unknown substance after trituration. This substance was determined to be aluminum oxide and, in the amorphous or poorly crystallized hydrated form, may be a contaminate of the amalgam alloy.