Fresh Frozen And Dmso Cryopreserved Homologous Bone In Atrophic Upper Jaws: Bone Block Grafts And Immediate Implants In Sinus Lift

In the last 3 years, in collaboration with the tissues bank, we proved the use of cryopreserved homologous bone (CFFB) to verify its osseogenetic properties due to dimethylsulfoxide preservetion at -140 degrees C. This work showed the results of a comparative perspective scientific study between FFB and CFFB block grafts with immediate implants in bilateral upper atrophic jaws, and reopening phases at the 4th and 6th month. Between January 2007 and March 2010, 20 patients had been surgically treated with double sinus lift using en block cortico-medullary FFB and CFFB (same donor) and 138 immediate SPI Alphabio implants, 109 of those fixing the grafts to residual alveolar bone with height inferior to 4 mm. The SVR implants was 97,9% after a mean follow up of 32 months, the results didn't show any histological differences between FFB and CFFB or about reopening implant phases at 4 or 6 months. The use of cortico-medullary FFB block graft in sinus lift and immediate implants showed to be a viable alternative to autologous bone, decreasing the timing of prosthetical rehabilitation and permitting to perform operation in local anaesthesia.