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Influence of Extraoral Polishing of the Crown-Abutment Interface on the Marginal Fit of Screw- and Cement-Retained Prostheses: A Clinical Pilot Study.

PURPOSE
To assess the effect of extraoral polishing of the crown-abutment interface on the marginal fit of implant-supported screw- and cement-retained prostheses (SCRPs).


MATERIALS AND METHODS
In 31 patients, the marginal gap of an SCRP was measured using a stereomicroscope before and after polishing of the crown-abutment interface, and the paired data were compared.


RESULTS
The marginal gap was significantly decreased after surface polishing regardless of the prosthesis material (P < .001).


CONCLUSION
Extraoral polishing of the crown-abutment interface could improve the marginal fit of SCRPs.