Different fabrication techniques of implant-supported prostheses: microhardness and fracture strength
Braz. j. oral sci
;
18: e191573, jan.-dez. 2019. ilus
Artículo
en Inglés
| LILACS, BBO
| ID: biblio-1095166
ABSTRACT
Aim: This study evaluated the mechanical behavior of implant-supported crowns obtained by different fabrication technique after thermomechanical cycling. Methods: Thirty-two external hexagon dental implants were divided into four groups (n=10): CC conventional casting with torch; EI electromagnetic induction casting; PL plasma casting; and CAD-CAM milling through computer-aided design and computer-aided manufacturing. Vickers microhardness of the specimens were made before and after the thermomechanical cycling, and then subjected to fracture load. Fracture pattern was evaluated. Results: No significant difference was observed comparing the microhardness before and after thermomechanical cycling. CAD-CAM group presented significant lower microhardness than the other groups. No significant statistical difference was showed on fracture load between the groups. The CAD-CAM and PL presented lower number of failure by plastic deformation. Conclusion: The manufacturing techniques affected the mechanical behavior and the failure pattern of implant-supported crowns tested
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Prostodoncia
/
Implantes Dentales
/
Diseño Asistido por Computadora
Idioma:
Inglés
Revista:
Braz. j. oral sci
Asunto de la revista:
Odontología
Año:
2019
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Meridional Faculty (IMED)/BR
/
University of Ribeirão Preto/BR
/
University of São Paulo/BR
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