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Medicina Oral, Patología Oral y Cirugía Bucal (Internet)

On-line version ISSN 1698-6946


BORONAT LOPEZ, Araceli; PENARROCHA DIAGO, Miguel; MARTINEZ CORTISSOZ, Orlando  and  MINGUEZ MARTINEZ, Ignacio. Resonance frequency analysis after the placement of 133 dental implants. Med. oral patol. oral cir.bucal (Internet) [online]. 2006, vol.11, n.3, pp.272-276. ISSN 1698-6946.

Introduction: The primary stability of dental implants is related to the bone in contact with the latter, and can be evaluated by resonance frequency analysis. Material and methods: Measurements were made in 133 implants (62 in the upper jaw and 71 in the mandible) of resonance frequency and insertion force to determine implant stability on the day of surgery, with an evaluation of its relationship to different variables. Results: The stability quotient of the implants on the day of surgery was 62.1, with an insertion force of 35.7 N. The insertion force was proportional to the resonance frequency, with an increasing stability quotient with growing insertion force. The stability quotient was greater in the larger diameter implants, shorter implants, in mandibular placement and in areas of more compact bone. Conclusions:The stability quotient on the day of implant placement is greater in higher bone density areas.

Keywords : Resonance frequency analysis (RFA); insertion force (IF); implant stability quotient (ISQ); dental implants.

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