Reconstruction of such defects can be accomplished using either vascularized or; more commonly; non-vascularized autogenous bone grafts. Different bone substitutes remain to be another viable option. The simultaneous use of titanium meshes provides physical three-dimensional support for the bone graft contained within as well as the overlying soft tissues. However, the drawbacks of titanium meshes in such defects remain to be mainly the difficulty in adequately shaping the mesh and the lack of proper isolation of the mesh contents from the maxillary sinus cavity.