Reconstruction of orbital defects with autogenous bone from mandibular symphysis.

Autotransplant bone is superior to other bone, cartilage, or alloplastic materials for the reconstruction of orbital floor defects. The bone used for filling orbital floor defects is taken from the symphysis of the lower jaw. The piece of bone, up to 3.5 X 1.5 cm in diameter is strong enough to support the orbital contents, while at the same time it is easily modelled and positioned. This method is indicated for reconstruction of the orbital floor, with or without rim defects. Taking of the transplant, while retaining the lower margin of the mandibular symphysis, preserves the contour of the chin.