| 초록 |
The main function of bone cement is to stabilize a prosthesis by filling the gap between the prosthesis and the surrounding bone and to transmit loads from the prosthesis to the bone. The ability to perform these functions is dependent on the chemical composition, processing and handling of the cement, and its physical, thermal and mechanical properties. It is known that there are three types of bone cements: PMMA, calcium phosphate, and Bis-GMA system. PMMA bone cement has no ability for bone bonding, leading sometimes to aseptic loosening of the cement. Also PMMA cement is its weak mechanical properties, causing cement fracture and the production of wear debris. To overcome the disadvantages of PMMA bone cement, several bioactive bone cements with high bioactivity and improved physical properties have been developed. One type of such bioactive bone cements is composed of Bis-GMA resin and bioactive inorganic filler. Recently, many attempts have been made to improve the application limitation and decreasing mechanical properties of Bis-GMA bone cement because of its high viscosity and use of diluent. In this study, an organic-inorganic hybrid bioactive bone cement containing the Bis-GMA derivatives (3MA mixture) and inorganic fillers (AW-GC and TCP) was prepared and their characteristics were examined by changing some additives such as polymerization initiator (BPO), accelerator (DMPT), and inhibitor (HQ)
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