Comparative analysis of ceramic flexural strength in co-cr and ni-cr alloys joined by TIG welding and conventional brazing
Braz. j. oral sci
; 16: e17049, jan.-dez. 2017. ilus
Artículo
en Inglés
| LILACS, BBO - Odontología
| ID: biblio-883691
Biblioteca responsable:
BR218.1
ABSTRACT
Aims:
The purpose of the present study was to evaluate the flexural strength of specimens made of nickel-chromium(Ni-Cr) and cobalt-chromium (Co-Cr) alloys and joined by tungsten inert gas (TIG) welding and conventional brazing. NiCr and CoCr base metal specimens (n = 40, each) were cast and welded by TIG or brazing. The specimens were divided into six groups (2 base metals, four welded specimens). Ceramic systems were applied to the central part of all the specimens. A three-point bending test with a velocity of 0.5 mm/m was performed on the specimens up to the point of the first ceramic bond failure by measuring the flexural strength. Data were analyzed using two-way ANOVA and Bonferroni's tests. Conventional welding showed the lowest flexural strength results for both alloys, while the TIG weld and the control group presented with varying bond strengths for the alloys studied. We concluded that TIG welding was superior to the conventional welding method for both NiCr and CoCr alloys with regard to the flexural strength of the ceramic (AU)
Texto completo:
Disponible
Colección:
Bases de datos internacionales
Base de datos:
BBO - Odontología
/
LILACS
Asunto principal:
Soldadura Dental
/
Cerámica
/
Aleaciones Dentales
Idioma:
Inglés
Revista:
Braz. j. oral sci
Asunto de la revista:
Odontología
Año:
2017
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Federal University of Pará/BR
/
University of Campinas/BR