Mechanical behavior of silver alloys used as cast post and core in maxillary incisors



Título del documento: Mechanical behavior of silver alloys used as cast post and core in maxillary incisors
Revista: Materials research
Base de datos: PERIÓDICA
Número de sistema: 000312729
ISSN: 1516-1439
Autors: 1
2
Institucions: 1Universidade de Brasilia, Departamento de Engenharia Mecanica, Brasilia, Distrito Federal. Brasil
2Universidade de Brasilia, Departamento de Odontologia, Brasilia, Distrito Federal. Brasil
Any:
Període: Abr-Jun
Volum: 7
Número: 2
Paginació: 255-262
País: Brasil
Idioma: Inglés
Tipo de documento: Nota breve o noticia
Enfoque: Experimental
Resumen en inglés This experimental "in vitro" investigation is mainly concerned with the mechanical behavior of twenty plastic analogous simulating endodonticaly treated maxillary central incisor roots, divided in two groups, which were restored with: (i) silver (10 specimens, Ag - 80%); and (ii) silver – palladium (10 specimens, Ag – 58.5% / Pd – 27.4%) cast alloys. All the restored analogous were clamped inside stainless steel cylinders filled with acrylic resin, and were tested to failure in an INSTRON machine. The static compressive loads were applied with an inclination of 45° relatively to the longitudinal direction of the teeth. On average, the specimens restored with Ag– Pd presented higher values of final failure load (i.e. fracture or excessive plastic bending) and stiffness. On the other hand, those restored with Ag presented average proportional limit loads which were, in comparison, about 5% higher
Disciplines Ingeniería,
Medicina
Paraules clau: Ingeniería de materiales,
Ingeniería mecánica,
Odontología,
Aleaciones,
Plata,
Restauración dental,
Propiedades mecánicas
Keyword: Engineering,
Medicine,
Materials engineering,
Mechanical engineering,
Dentistry,
Alloys,
Silver,
Dental restoration,
Mechanical properties
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