Implant Site Preparation with Osteocondensation Drills Versus Preparation with Standard Drills: An In vitro Study on Polyurethane Foam Sheets

Objectives: The aim of the present investigation was to evaluate, on polyurethane sheets, two different drilling techniques for dental implant positioning using osteocondensing burs compared to a standard type protocol.
Methods: Three different implant designs (Implacil De Bortoli UN III 4x10 mm, Restore RBM 4 x10 mm; Implacil De Bortoli UN II 4x10 mm) were evaluated in the present in vitro investigation: Test Implant (osteocondensing drills) and Control Implant (standard drills). The present study was conducted comparing the Insertion and removal Torque and the resonance frequency analysis (RFA) values of Test and Control Implants inserted in different size and different density polyurethane foam models for a total of 120 experimental sites. One hundred and twenty experimental holes were produced into different PCF polyurethane foam: 60 sites were produced in 10 PCF sheets and 60 sites in 10 PCF sheets with an additional 1 mm layer of 30 PCF.

Results: The IT, removal torque and RFA values were higher, for all 3 types of implants, in the sites prepared with the osteocondenser drills when compared to sites prepared with standard drills.
Conclusions: The outcome of this investigation suggested a possible clinical application of osteocondensing burs in case of reduced bone quality and quantity in the posterior maxilla.