نتایج جستجو برای: 45s5
تعداد نتایج: 236 فیلتر نتایج به سال:
Submit Manuscript | http://medcraveonline.com only osteoconductivity but also osteoinductivity, has attracted much interests in the field of bone tissue engineering but not only. Indeed, the typical silicate bioactive glasses demonstrated to bond to bone more efficiently than any other synthetic materials [1]. However, it was rapidly found that the highly disrupted silica network of bioactive g...
Bacterial infections after implant surgical procedures are a complication observed in many surgeries to treat bone injuries or diseases. Bacteria can attach the surface of producing biofilms, and if treatment with antibiotics does not work, further surgery is necessary remove infected implant. Among biomaterials for implants, bioceramics based on calcium phosphates (CaPs) such as β-TCP stand ou...
شیشه زیستی 45S5 به روش واکنش در حالت جامد با استفاده از شیشه سودالایم، کلسیم کربنات، سدیم کربنات و فسفر پنتااکسید سنتز شد. ترکیب شیشه سودالایم توسط آنالیز عنصری فلئورسانس پرتوی ایکس(XRF) تعیین شد و مقادیر مورد نیاز از سایر مواد اولیه برای رسیدن به ترکیب شیشه زیستی 45S5 محاسبه و به آن اضافه گردید. مخلوط پودرها به دو شکل پودر و قرص تهیه شده و تحت شرایط عملیات حرارتی مختلف (ºC800 تا ºC1000) قرار گ...
در تحقیق حاضر، سنتز نانوپودر شیشه زیستفعال 45S5 از طریق روش سل-ژل و در محیط اسیدی انجام میشود. از تترا اتیل ارتوسیلیکات (Tetraethylorthosilicate: TEOS) به عنوان مواد اولیه تامین سیلیس و از TEP (Three Ethyl Phosphate) به عنوان تامین ترکیبات فسفات پودر استفاده شد. سنتز بدون آب و با استفاده از حلال الکل خالص 99/99% انجام شد. پس از تهیه نانوپودر از ژل و خشک کردن آن، فرآیند عملیات حرارتی در دمای 5...
Bioactive glass formed on the base sample (Go) of 45S5 system with fluorine additives samples were prepared by melt quenching method. The glassy samples were subjected to DTA for determining temperatures at which phase transition occur. FTTR spectroscopy shed a light on the sorts of compounds, their structure as well as their functional groups. The crystalline nature of samples was confirmed by...
nerve regeneration. T main body of research involving bioactive glasses (BGs) has been devoted to applications in orthopedics and dentistry, given that the original composition 45S5 BioglassTM was developed to treat non-self-healing bone defects, such as bullet trauma or cancer. Because of their high bioactivity, BGs directly bond to bone. That bioactivity recently has been appreciated to exten...
Bioglass® 45S5 is widely used in biomedical applications due to its ability to bond to bone and even to soft tissues. The sintering ability of Bioglass powders is a key factor from a technological point of view, since its govern the production of advanced devices, ranging from highly porous scaffolds to functionalized coatings. Unfortunately this particular glass composition is prone to crystal...
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