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Proprosthetic interventions in the posterior maxillary implant therapy.

AIM
The purpose of this study is to evaluate the necessary number of pro-prosthetic interventions in view of the implanto-prosthetic rehabilitation of the defective prosthetic fields.


MATERIALS AND METHODS
We investigated a lot that included 230 patients aged between 18 and 82 who benefited from implant-prosthetic rehabilitation, the type of graft used, the types of membranes selected as well as the various remodeling and elevation techniques at the maxillary level dictated by the particularity of the clinical case.


RESULTS AND DISCUSSIONS
The edentulous posterior maxillary region presents in implantology a more difficult situation than any other region of the maxillary. The absence of teeth often triggers a progressive reduction of the alveolar process volume, a reduction that aims particularly at the bony vertical dimension, namely the region between the top of the alveolar ridge and the floor of the maxillary sinus, called the sub-sinus Misch vertical dimension. The presence of the maxillary sinus, combined with the reduction of height of available bone in the terminal maxillary region poses serious problems for implant insertion.


CONCLUSIONS
The success of the implant therapy depends on the absence of radio-transparent areas, while the per-implant bone resorption must be limited to the cervical region and should not involve the implant threads or its osteo-integrated area. The implant should also be fix, pain free, with no local infection.