Background
The possibility of preparing implant sockets for implantology is one of the latest applications of Piezosurgery®. Using traditional drills, in which the cutting action is performed by the axial rotation of sharp blurs or flutes, tends to generate a significant amount of heat which is then dispersed into the surrounding bone. The ultrasonic technique deployed to undertake this procedure is called “differential ultrasonic preparation” and can be performed via an enlargement of the osteotomy in three degrees of freedom. For this reason feedback from the progressive cutting action would maximize the precision by ensuring that the socket is aligned with the prosthetic axis. Mixed traditional and ultrasonic techniques have been clinically evaluated for implant site preparation and implant placement revealing that implant stability may develop faster.
Aim/Hypothesis
This preliminary clinical study has been undertaken to ascertain the combined benefits of applying a specifically designed intra-oral navigation system to a differential ultrasonic preparation via a quantitative comparison of the surgical plan with post-operative measurements.
Material and Methods
In this study five patients were considered with five implant sites. Two upper jaws and three mandibles were treated and in two cases a flapless surgery was performed. Through the use of the ImplaNav™ system (BresMedical, Sydney, 2015) for image-guided surgery, the virtual implant insertion environment is aligned with the physical patient by way of a unique set of reference tools compatible for use with the Piezosurgery® (Mectron S.r.l., Genova, Italy) handpiece and implantology inserts. In two cases a full ultrasonic implant site preparation was performed and in three patients the implant preparation was completed with standard drills up to the planned implant diameter. The surgeries reported in this study include the selective preparation of the lingual cortical wall in the thin crest posterior mandible performed using both a full piezoelectric procedure and a combination of Piezosurgery® with traditional drilling.
Results
The combination of piezoelectric implant site preparation with live feedback from a dedicated navigation system seems to improve the accuracy of applying smaller diameter cutting blurs to the lateral and vertical preparation of the implant socket. This procedure is able to promote deeper bone anchorage and larger irrigation with a reduced number of cutting tips. Results were obtained for 5 patients for a total of 5 implant insertions by registering the pre-operative plan with the post-operative tomographic volumes and show an average deviation for the implant surface of 0.90+/-0.07mm.
Conclusions and clinical implications
More clinical studies are required to validate these findings. For the preliminary cases examined by this study it appears that the combination of piezoelectric surgery with a surgical navigation system is destined to promote implant osseointegration by way of achieving deeper anchorage and minimal invasiveness.
Background
The possibility of preparing implant sockets for implantology is one of the latest applications of Piezosurgery®. Using traditional drills, in which the cutting action is performed by the axial rotation of sharp blurs or flutes, tends to generate a significant amount of heat which is then dispersed into the surrounding bone. The ultrasonic technique deployed to undertake this procedure is called “differential ultrasonic preparation” and can be performed via an enlargement of the osteotomy in three degrees of freedom. For this reason feedback from the progressive cutting action would maximize the precision by ensuring that the socket is aligned with the prosthetic axis. Mixed traditional and ultrasonic techniques have been clinically evaluated for implant site preparation and implant placement revealing that implant stability may develop faster.
Aim/Hypothesis
This preliminary clinical study has been undertaken to ascertain the combined benefits of applying a specifically designed intra-oral navigation system to a differential ultrasonic preparation via a quantitative comparison of the surgical plan with post-operative measurements.
Material and Methods
In this study five patients were considered with five implant sites. Two upper jaws and three mandibles were treated and in two cases a flapless surgery was performed. Through the use of the ImplaNav™ system (BresMedical, Sydney, 2015) for image-guided surgery, the virtual implant insertion environment is aligned with the physical patient by way of a unique set of reference tools compatible for use with the Piezosurgery® (Mectron S.r.l., Genova, Italy) handpiece and implantology inserts. In two cases a full ultrasonic implant site preparation was performed and in three patients the implant preparation was completed with standard drills up to the planned implant diameter. The surgeries reported in this study include the selective preparation of the lingual cortical wall in the thin crest posterior mandible performed using both a full piezoelectric procedure and a combination of Piezosurgery® with traditional drilling.
Results
The combination of piezoelectric implant site preparation with live feedback from a dedicated navigation system seems to improve the accuracy of applying smaller diameter cutting blurs to the lateral and vertical preparation of the implant socket. This procedure is able to promote deeper bone anchorage and larger irrigation with a reduced number of cutting tips. Results were obtained for 5 patients for a total of 5 implant insertions by registering the pre-operative plan with the post-operative tomographic volumes and show an average deviation for the implant surface of 0.90+/-0.07mm.
Conclusions and clinical implications
More clinical studies are required to validate these findings. For the preliminary cases examined by this study it appears that the combination of piezoelectric surgery with a surgical navigation system is destined to promote implant osseointegration by way of achieving deeper anchorage and minimal invasiveness.