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Volume 6 , Issue 4
Winter 1991

Pages 437-441

A Removal Torque and Histomorphometric Study of Bone Tissue Reactions to Commercially Pure Titanium and Vitallium« Implants

Carina B. Johansson, PhD/Lars Sennerby, DDS, PhD/Tomas Albrektsson, MD, PhD

PMID: 1820312

Screw-shaped commercially pure (CP) titanium and Vitallium« implants were inserted in the rabbit tibial metaphysis. After a healing period of 3 months, it was demonstrated that a higher torque was needed to remove the CP titanium implants (average 24.9 Ncm) compared to Vitallium implants (average 11.7 Ncm). The histomorphometric part of the study revealed more bone-to-metal contact for the CP titanium implants (average 34.7%) compared to the Vitallium implants (average 21.7%). The results obtained in this study could be explained by differences in the topography or in biocompatibility of the metals, or a combination of these two factors. ( INT J ORAL MAXILLOFAC IMPLANTS 1991;6:437-441.)

Key words: biocompatibility, commercially pure titanium, surface topography, Vitallium«

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