Effect of casting technique on surface roughness and consequent mass loss after polishing of NiCr and CoCr base metal alloys: a comparative study with titanium

Autor(es)

Bezzon, Osvaldo Luiz ^[1] ; Pedrazzi, Hamilton ; Zaniquelli, Osvaldo ; Silva, Tânia Bose Cambuy da

Afiliação do(s) autor(es)

^[1] Universidade de São Paulo (USP). Faculdade de Odontologia de Ribeirão Preto. Departamento de Materiais Dentários e Prótese - Brasil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PROSTHETIC DENTISTRY; v. 92, n. 3, p. 274-277, set. 2004.
• Área do conhecimento: Ciências da Saúde - Odontologia
• Assunto(s): Materiais dentários Ligas dentárias Titânio

Resumo

Surface roughness of cast metal frameworks may lead to difficulties in finishing or polishing procedures and weaken the framework. The aim of this study was to assess the surface roughness of 2 base metal alloys, submitted to different casting techniques, to determine the influence of surface roughness on loss of mass after polishing compared to commercially pure titanium castings. Within the limitations of this study, the base metal alloys submitted to vacuum casting showed decreased surface roughness, similar to that of titanium, compared to base metal alloys submitted to acetylene-oxygen flame casting. There were no significant differences in loss of mass after polishing for all tested specimens. (AU)

• Processo FAPESP: 96/11874-4 - Estudo comparativo entre propriedades físicas do titânio puro processado por cera perdida em relação as ligas odontológicas de Ni-Cr e Co-Cr
• Beneficiário: Osvaldo Luiz Bezzon
• Modalidade de apoio: Auxílio à Pesquisa - Regular