CONCLUSIONS

In this work we experimented the bio-mechanical analyse of two different types of operation on a partially edentulous jaw-bone: with traditional implants or with welded screws and bracket implants by a wire. For this reason a three-dimensional model has been created: it's made of homogeneous materials and able to simulate a part of the mandible.
The obtained results allowed to control how the tensional states don't produce breaking tensions in both cases (except in very localised points), but when using traditional implants important concentrations of tensions occur in the bone, in correspondence of the discontinuity between the original cortical bone and the implanted bone and in correspondence of the distal extremity of the screw.
So it's right to affirm that bracket and screw implants allow to produce a more favourable bio-mechanical condition in addition to a higher application simplicity. The new structural model is necessary for a better comprehension of the way of loading and it could be personalised on each patient imposing a certain thickness of the cortical bone and a specific quality of the trabecolous bone.
Complexly, we set a methodology able to compare different "planning" solutions of surgical operation in Odontostomatology.