Determinación de la estabilidad de implantes de uso odontológico mediante análisis de armónicos

Abstract

Within all the recovery therapies of lost teeth, the dental  implants have meant the revolution in the past 25 years. One  of the keys for having achieved this success is the mechanical  stability, which is the control of micromovement in the boneimplant interface during the masticatory forces. The resonance  frequency analysis (RFA) is a method used to determine the  stiffness of that interface and as a consequence, the stability of  the implant itself.  The aim of this study is to present a method to determine  the resonance frequency of the dental implant inside the  supporting bone based on the harmonic response analysis. For such goal an experimental study was carried out, on jaw  of resin of two different densities in which 6 dental implants  were placed. The implant insertion torque was measured,  the vibrational responses of the implant were then acquired  through a microphone when it was hit by a hammer and the  harmonic was measured by a labview 11 software.  The statistical analysis established a significant correlation  (p<0.05) between the variables of the insertion torque (Ncm)  and sound frequency (Hz); and between the sound frequency  and the stiffness of the resin, so, the higher the density the  higher the torque and the Hz value.  The analysis of the harmonics has a relationship with other  variables related to the implant stability, such as the insertion  torque, the density and the stiffness of the supporting bone