Autogenous bone blocks harvesting from the mandibular retromolar area: a clinical report of 160 consecutive treated patients.
Speakers : S. Trasarti (Teramo – Italy), P. Khoury (Olsberg – Germany)
Materials and Methods :
Before proceeding to bone harvesting, it was required from all patients a panoramic radiograph and a CBCT to evaluate anatomical landmarks and the thickness of external oblique ridge. The harvesting surgery from the mandibular retromolar area was performed under local anesthesia in combination with i.v. sedation, following the MicroSaw protocol described by Khoury1. Harvesting time, volume of the harvested block as well as intra and post operative complications were documented.
A total of 176 autogenous bone blocks were harvested in 160 Patients. In 144 patients the bone was collected from one retromolar area and in 16 patients from both sides The average harvesting time was 7.5+-2,5 minutes and the mean volume obtained was 1.6+/- 0.9 cm3. In eight cases a partial exposure of the alveolar nerve has occurred but without nerve injury. None major nerve lesion with permanent anesthesia was observed. Post operative swelling, hamatoma and pain were similar to that observed after removal of impacted wisdom teeth. In five patients, all smokers, minor healing complications of the harvested area was documented, but healed secondary slowly after local treatment.
This study showed that the followed surgical procedure allowed efficient and safe harvesting bone blocks from retromolar area. It was possible to obtain autogenous bone blocks in a short time with a low complication rate and reduced morbidity.
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