prov:value
| - Also, according to this invention, the blocks or plugs instead of being made of an inert metal, such as stainless steel, titanium, cobalt-chromium-molybdenum alloys and the like, can be made of a radiolucent material, such as a plastic of the nylon, polycarbonate, polypropylene, polyacetal, polyethylene, and polysulfone type, preferably filled with glass or carbon fibers.
|