| 摘要 |
Abstract Polymethylmethacrylate bone cement The invention proposes a two-component bone cement that comprises A) a paste as component A, comprising al) methylmethacrylate; a2) at least one methylmethacrylate 5 soluble polymer having a number average molar mass of less than 500,000 Dalton; a3) at least one methylmethacrylate-insoluble particulate polymer having a particle size D50 of less than 50 pm; a4) at least one methylmethacrylate-soluble hydroperoxide; and a5) at least one methylmethacrylate-soluble tertiary amine; and B) a powder as component B, comprising b1) at least one particulate radiopaquer having a particle size D50 of less than 10 50 pm; b2) at least one methylmethacrylate-soluble heavy metal salt; and b3) at least one methylmethacrylate-soluble reducing agent. The mixing of paste A and powdered component B immediately generates a tack-free plastically deformable cement dough, without any waiting time, that self-cures by means of radical polymerisation. |
