Journal of Prosthodontics News   September 24, 2019

A Study of Fracture Resistance of Zirconia Crowns and Abutments


Now online in the Journal of Prosthodontics, Drs. Amirali Zandinejad, Mohammad Mujtaba Methani, Emet D. Schneiderman, Marta Revilla-León, and Dean Morton compare the fracture resistance of implant-supported milled zirconia, milled lithium disilicate, and additively manufactured zirconia crowns.

The authors found that milled zirconia crowns demonstrated the highest median fracture resistance, followed by milled lithium disilicate and additively manufactured zirconia crowns. Statistical analysis showed no significant differences in fracture resistance between the groups. All specimens fractured at the implant-abutment interface. The results of the study signify the promising potential of additive manufacturing for the fabrication of all ceramic zirconia crowns.

Zandinejad A, Methani M, Schneiderman, et al: Fracture Resistance of Additively Manufactured Zirconia Crowns when Cemented to Implant Supported Zirconia Abutments: An in vitro Study. J Prosthodont doi: 10.1111/jopr.13103 


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