Therefore, since 2015, in elderly patients with osteoporotic change, we have started to fill with blocks of bone substitute composed of β tricalcium phosphate with 60%% porosity (Osferion®, Olympus Terumo Biomaterials Corp., Tokyo, Japan) beneath the osteotomy stick in order to avoid unintended subsidence (Fig. 7).
Design of bone substitute biomaterials requires an understanding of how bone behaves mechanically at different scales.
Important geometric design measures of bone substitute include pore size, interconnection size, porosity, permeability and surface area of the substitute.
The current study is restricted to biomechanical testing of bone substitute materials in vitro.
The median volume of bone substitute used was 18 mL (range 5 28).
The present article is devoted to these so-called bone substitute materials, with an emphasis on four aspects: (1) the various materials used for bone substitution, (2) the various formulations that are commercially available (granules, blocks, pastes, cements, membranes), (3) the special architectures used for such materials, and finally (4) the main resorption mechanisms of bone substitutes.
Implant survival was 87.70% with grafts of 100% autogenous bone, 94.88% when combining autogenous bone with various bone substitutes, and 95.98% with bone grafts consisting of bone substitutes alone.
Therefore, combinations of bone substitutes and osteoinductive agents such as rhBMP2 have received increasing attention as potential bone graft substitutes [ 14].
Bone loss and fractures may call for the use of bone substituting materials, such as calcium phosphate cements (CPCs).
