Effect of investment for titanium crown and bridge on reactive layer of castings / 华西口腔医学杂志
West China Journal of Stomatology
;
(6): 183-186, 2009.
Artigo
em Chinês
| WPRIM
| ID: wpr-248277
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect of self-developing investment (FUS-invest) on the reactive layer of titanium castings.</p><p><b>METHODS</b>Three 10 mm x 10 mm x 1 mm pure titanium castings were founded using FUS-invest. Metallographical structure of reactive layer was observed. X-ray diffraction (XRD) and scanning electron microscope with energy-dispersive spectrum (EDS) were used to analyze the status of composition of the casting surface. Micro-Vickers hardness was measured.</p><p><b>RESULTS</b>The metallograph indicated that the reactive layer was composed of coarse flake-shaped alpha phase of grains. The value of micro-Vickers hardness with the range 243 to 314 MPa had not significantly difference under the depth of 105 microm beneath the surface. The XRD pattern clearly showed the peaks of ZrO2, SiO2, Mg2TiO4 and TiO2. EDS analysis demonstrated that the main elements were Al, Si, Zr and Cl.</p><p><b>CONCLUSION</b>FUS-invest is suited for pure titanium casting because of the thin reactive layer and less change to metallographical structure.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Propriedades de Superfície
/
Titânio
/
Técnica de Fundição Odontológica
/
Dióxido de Silício
/
Coroas
/
Revestimento para Fundição Odontológica
/
Dureza
/
Investimentos em Saúde
Limite:
Humanos
Idioma:
Chinês
Revista:
West China Journal of Stomatology
Ano de publicação:
2009
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS