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Volume 11 , Issue 2
March/April 1996

Pages 179-185

The Reverse-Torque Test: A Clinical Report

Daniel Y. Sullivan, DDS/Richard L. Sherwood, DDS/Thomas A. Collins, DDS/Paul H. J. Krogh, DDS

PMID: 8666448

Reverse torque to failure on implants has been studied in animals. Three implants were reverse torqued to failure in a human volunteer, with failure rates between 45 and 58 Ncm. Clinical data are presented on 404 implants examined after reverse-torque testing and loading, with no increase in failure rates. Reverse-torque testing at 20 Ncm appears to be a safe, reliable method for verifying osseointegration with pure titanium screw-shaped implants. (INT J ORAL MAXILLOFAC IMPLANTS 1996;11:179-185)

Key words: human trial, reverse torque, surface area, verification

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