Mixing does not improve mechanical properties of all bone cements
| Autor: | Jørgen Steen Jensen, Dick Hansen |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Cement
Vacuum mixing Polymethyl methacrylate Chemistry Physical Viscosity business.industry Chirurgie orthopedique Acrylic Resins Bone Cements Mineralogy Centrifugation Methylmethacrylate Strength of materials Humans Methylmethacrylates Polymethyl Methacrylate Medicine Orthopedics and Sports Medicine Surgery Composite material business Mixing (physics) |
| Zdroj: | Acta Orthopaedica Scandinavica. 63:13-18 |
| ISSN: | 0001-6470 |
| Popis: | Contemporary mixing methods--centrifugation, vacuum mixing with or without precompression--were compared with manual mixing by testing strength characteristics in accordance with a proposed revision of the international standard for bone cements as applied to 10 cement brands. Simplex brands and low-viscosity cements were the strongest, and were not improved by any of the vacuum-mixing procedures. Centrifuging was found unsuitable for low-viscosity cements. Without attaining the strength of the former, the cements best suited for auxiliary mixing methods were CMW-1 and Palacos brands, which improved 6-11 percent by either of the methods. The Sterivac system was generally found unacceptable, because about 20 percent of a cement package was retained in the mixing gear, and the application of precompression had no additional effect on compressive and bending strengths. |
| Databáze: | OpenAIRE |
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