Immediate implant placement often requires tissue augmentation simultaneously. Both hard and soft tissue grafting can improve long-term physiologic and esthetic outcomes. Bone replacement grafts are frequently combined with barrier membranes (guided bone regeneration [GBR]). When these materials are resorbable, they are often composed of collagen or synthetic polymers. These techniques do not a...

Platelet-rich plasma is an autologous product that is derived from whole blood through the process of gradient density centrifugation. The proposed value of this product in dental implantology and in bone augmentation procedures lies in the ability to incorporate high concentrations of the growth factors PDGF TGF-beta1, TGF-beta2, and IGF as well as fibrin, into the graft mixture. Research has ...

A series of 785 bone grafts between the tympanic membrane and head of the stapes were performed between 1964 and 1998. Ears were divided into 'normal tympanic membrane', 'stage I' and 'stage II' groups, in which the averages of the last postoperative air-bone gaps were 13.2, 18.7 and 18.1 dB, respectively (revision operations included). In the same order 43%, 26% and 23% of the ears showed air-...

Sixteen autogenous sural nerve grafts used for ulnar and median injuries in the forearm have been studied neurophysiologically up to two and a half years after operation. Motor and sensory nerve conduction studies revealed a slow but sustained improvement during the follow-up period. By two years, motor conduction velocity across the graft itself reached in most cases 40 to 85% of the conductio...

Intervertebral disc degeneration often requires bony spinal fusion for long-term relief. Current arthrodesis procedures use bone grafts from autogenous bone, allogenic backed bone, or synthetic materials. Autogenous bone grafts can result in donor site morbidity and pain at the donor site, while allogenic backed bone and synthetic materials have variable effectiveness. Given these limitations, ...

Implant surgeon should take advantage of advances in instrumentation and grafting biomaterials to augment the defi cient ridges. Biotechnology has greatly improved our ability to predict and reconstruct osseous defects. In addition to present specifi c bone grafting techniques used to restore hard tissue volume defects at the sites, the volume of augmentation defi nes the procedure. Signifi can...

BACKGROUND The management of pelvic giant cell tumors (GCTs) involving the acetabulum remains a challenge for surgeons on how to balance the relative benefits of minimizing recurrence and maintaining postoperative hip function. The present study was to present and evaluate the clinical indications, operative technique, and outcomes of pelvic GCTs involving partial acetabulum treated with multip...