Resumo

BEZERRA, Fábio; RIBEIRO, Érica Del Peloso; SOUSA, Sandro Bittencourt  e  LENHARO, Ariel. Influence of macro-geometry in the primary stability of implants. Innov. Implant. J., Biomater. Esthet. (Online) [online]. 2010, vol.5, n.1, pp. 29-34. ISSN 1984-5960.

The primary stability of implants is related to implant geometry since it can raise the intimate contact between biomaterial and bone structure. The aim of the present study was to evaluate the influence of implant geometry on primary stability. It was used two types of implants, one cylindrical and with an unique thread (control group) and another tapered with three types of threads (test group). Implants were placed by three professionals in bovine bone. Each operator installed eight implants (4 test and 4 control). The parameters analyzed were: inserting torque, unscrewing torque and resonance frequency. As results it was detected that insertion torque was higher in the test group (p < 0,05). It was not observed influence of the operator in the parameters analyzed. Thus, it can be concluded that geometry of implants in the test group improved implant primary stability.

Palavras-chave : Osseointegrations; Dental implants; Titanium.