Different fabrication techniques of implant-supported prostheses: microhardness and fracture strength
Borges, Silas Monteiro; Poole, Stephanie Francoi; Moris, Izabela Cristina Maurício; Spazzin, Aloísio Oro; Faria, Adriana Cláudia Lapria; Gomes, Erica Alves.
Braz. j. oral sci
; 18: e191573, jan.-dez. 2019. ilus
Artículo
en Inglés
| LILACS, BBO - odontología (Brasil) | ID: biblio-1095166
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
Biblioteca responsable:
BR218.1
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