The achievement and the maintenance of dental implant stability are prerequisitesfor the long-term success of the osseointegration process. Since implant stability occursat different stages, it is clinically required to monitor an implant over time, i.e. betweenthe surgery and the placement of the artificial tooth. In this framework, non-invasive testsable to assess the degree of osseointegration are necessary. In this paper, theelectromechanical impedance (EMI) method is proposed to monitor the stability of dentalimplants. A 3D finite element model of a piezoceramic transducer (PZT) bonded to adental implant placed into the bone was created, considering the presence of a bone-implant interface subjected to Young’s modulus change. The numerical model wasvalidated experimentally by testing bovine bone samples. The EMI response of a PZT,bonded to the abutment screwed to implants inserted to the bone, was measured. Tosimulate the osseointegration process a pulp canal sealer was used to secure the implantto the bone. It was found that the PZT’s admittance is sensitive to the stiffness variationof the bone-implant interface. The results are promising because they show the potentialof EMI method to (i) evaluate the material properties around dental implant, and (ii)promote a novel non-invasive monitoring of dental implant surgical procedure.
|Numero di pagine||10|
|Stato di pubblicazione||Published - 2014|
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