Evaluation of ceramic flexural strength of a cobalt-chromium alloy subjected to airborne particle abrasion and tungsten inert gas welding
Braz. j. oral sci
; 18: e191443, jan.-dez. 2019. ilus
Artigo
em Inglês
| LILACS, BBO - Odontologia
| ID: biblio-1094899
Biblioteca responsável:
BR218.1
ABSTRACT
Aim:
The aim of this study was to evaluate the influence of tungsten inert gas (TIG) welding and airborne particle abrasion using aluminum oxide particles on the flexural strength of a joint between ceramic and cobalt-chromium alloys.Methods:
The specimens were cast and welded using TIG, then divided into 6 groups (n = 10) and subjected to blasting with 250 µm, 100 µm, and 50 µm aluminum oxide particles. Ceramic systems were applied to the central part of all specimens. A three-point bending test using a velocity of 0.5 mm/m was performed on the specimens to measure flexural strength. Data were analyzed using two-way analysis of variance and Tukey's test.Results:
TIG welding demonstrated the lowest resistance compared with the non-welded groups. Airborne particle abrasion using 250 µm aluminum oxide particles demonstrated greater resistance in the welded groups (p < 0.05). Mixed faults were found in all specimens.Conclusion:
TIG welding decreased the bond strength, and the particle size of aluminum oxide did not affect the metal-ceramic bond in groups without TIG welding
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
BBO - Odontologia
/
LILACS
Assunto principal:
Soldagem em Odontologia
/
Ligas de Cromo
/
Materiais Dentários
/
Porcelana Dentária
Idioma:
Inglês
Revista:
Braz. j. oral sci
Assunto da revista:
Odontologia
Ano de publicação:
2019
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Federal University of Pará (UFPA)/BR