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Volume 11 , Issue 6
November/December 1996

Pages 728-734

A Dynamic Modal Testing Technique for Noninvasive Assessment of Bone–Dental Implant Interfaces

John J. Elias, PhD/John B. Brunski, PhD/Henry A. Scarton, PhD

PMID: 8990633

A dynamic modal testing technique has been developed to noninvasively assess the interface surrounding an endosseous dental implant with a lateral tap from an impedance head hammer. The technique assesses the rotational stiffness of the interface based on the shape of the power spectrum of the force-time curve produced on impact. In vitro experiments were performed to determine the sensitivity of the technique for detecting clinically relevant structural differences between interfaces. The modal test data were able to distinguish interfaces based on the type of bone at the interface and the degree of fixation between the implant and the interface. (INT J ORAL MAXILLOFAC IMPLANTS 1996;11:728–734)

Key words: dental implant, interface, noninvasive assessment

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