Abstract
BackgroundOn bone implantology, stability of a dental implant is an essential clinical tool during osseointegration evaluation, as it is a reflection of the structural and functional connection between the bone and the implant.MethodsThe sample was comprised by 17 patients with 40 NanoTec™ and Vellox® implants, placed on the lower jaw, under optimum conditions, after a minimum healing period of 3 months, during stage 2 surgery.ResultsAll 40 implants showed ideal clinical stability after the 30 Ncm reverse torque. There was absence of mobility, absence of radiolucid radiographic images, and symptomatology.ConclusionsThe reverse torque is an accepted and non-invasive clinical method for early verification of initial integration, reducing the incidence of possible failure during the first year of prosthetic loading. This is the first study in humans which shows that 30 Ncm is possible, which means a greater safety for prosthetics, since prosthetic parts are turned with up to 35 Ncm.
Highlights
On bone implantology, stability of a dental implant is an essential clinical tool during osseointegration evaluation, as it is a reflection of the structural and functional connection between the bone and the implant
A clinical trial was carried out, in which 17 patients treated with implants at the School of Dentistry of the Santa Maria University and which had had 40 dental implants placed from two different commercial brands, with NanoTecTM and Vellox® surfaces, on the lower jaw, with the approval of the Bioethics Committee of the Santa Maria University (Fig. 1)
This study reports on the clinical behavior of 40 dental implants placed on the lower jaw, on ideal bone, and under ideal surgical and systemic conditions, subjected to a 30-Newton centimeters (Ncm) reverse torque during the stage 2 surgery, on 17 patients
Summary
Stability of a dental implant is an essential clinical tool during osseointegration evaluation, as it is a reflection of the structural and functional connection between the bone and the implant. Strategies used to improve bone response include increasing the rugosity or the application of bioactive liners, to improve cellular adhesion and increase the bone-implant contact surface [3, 4]. A physical measuring test has been introduced to monitor the stability of the implant, after its healing period. Clinical perception of the stability of the dental implant is frequently related to rotational resistance. It is unknown how much torque may be applied for testing without damaging the implant osseointegration. The available data for this comes from three volunteer implants and from animal research
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