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Different fabrication techniques of implant-supported prostheses


Dental implants
Computer-aided design
Flexural strength.

How to Cite

Borges SM, Poole SF, Moris ICM, Spazzin AO, Faria ACL, Gomes EA. Different fabrication techniques of implant-supported prostheses: microhardness and fracture strength. Braz. J. Oral Sci. [Internet]. 2019 Nov. 12 [cited 2024 Feb. 23];18:e191573. Available from:


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.


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