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The International Journal of Oral & Maxillofacial Implants



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Int J Oral Maxillofac Implants 11 (1996), No. 2     1. Mar. 1996
Int J Oral Maxillofac Implants 11 (1996), No. 2  (01.03.1996)

Page 179-185

The Reverse-Torque Test: A Clinical Report
Sullivan, Daniel Y. / Sherwood, Richard L. / Collins, Thomas A. / Krogh, Paul H. J.
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.

Keywords: human trial, reverse torque, surface area, verification