نوع مقاله : مقاله کامل پژوهشی
موضوعات
عنوان مقاله English
نویسندگان English
In this study, the effect of the ratio of different components of the liquid phase on the properties of polymethyl methacrylate bone cement was investigated. Polymethyl methacrylate microspheres were synthesized through the emulsion method. Scanning electron microscope observations showed that microspheres with a size of 20 microns were obtained. The optimized bone cement, in terms of mechanical strength and setting time, was achieved by changing the molar ratio of methyl methacrylate (as monomer), benzoyl peroxide (as an initiator), and methyl toluene (as an activator). The presence of benzoyl peroxide, methyl toluidine, and hydroquinone (as the inhibitory agent) was confirmed by Fourier transform spectroscopy analysis. The setting time varied from 10 minutes to 24 hours, and the compressive strength and elastic modulus ranged from 7 to 60 MPa and 0.15 to 0.88 GPa, respectively. The results from thermometry analysis showed that the heat of reaction of the cements increased upon increasing the molar ratio of benzoyl peroxide to methyl toluene. The phase analysis of the optimized bone cement confirmed the presence of both amorphous and crystalline phases related to methyl methacrylate. Cell studies showed that the cement was non-toxic and exhibited adequate fibroblast cell adhesion. According to the results, the cement may be appropriate for the treatment of spinal damages, such as vetebroplasty and kyphoplasty.
کلیدواژهها English