Nida GELİBOLU, Özge Can ÖZTÜRK, Nevin KARAMAHMUT MERMER, FATMA TUĞÇE ŞENBERBER, Nurcan TUĞRUL, Mehmet Burçin PİŞKİN

THE EFFECT OF HYDROXYAPATITE ADDITIVE PRODUCED FROM DIFFERENT CALCIUM SOURCES TO STRENGTH OF BONE CEMENT

Acrylic bone cement at high strength is produced by adding hydroxyapatite additive which was produced using two different calcium sources (Ca(OH)2 and CaCO3) was aimed. Seashell was used as a CaCO3 source. Characterizations were performed using XRD, and FT-IR. Thermal behaviours and surface morphologies were determined using DTA/TG and SEM techniques. The addition of hydroxyapatite synthesized from Ca(OH)2 and CaCO3 increased the compressive strength (from 74 MPa to 106 MPa and 103 MPa) of the resultant cements respectively. These new bone cements have mechanical strengths comparable with commercially available cements and are believed to be more biocompatible since hydroxyapatite is a natural mineral present in the bone structure.

FARKLI KALSİYUM KAYNAKLARINDAN ÜRETİLMİŞ HİDROKSİAPATİTİN KEMİK ÇİMETOSU DAYANIMINA ETKİSİ

Bu çalışmada, iki farklı kalsiyum kaynağı (Ca(OH)2 and CaCO3) kullanılarak üretilen hidroksiapatit katkısı eklenerek yüksek mukavemetli akrilik kemik yapıştırıcısı üretilmiştir. CaCO3 kaynağı olarak deniz kabuğu kullanılmıştır. Üretilen örnekler, XRD ve FT-IR kullanılarak karakterize edilmiştir. Termal davranış ve yüzey morfolojileri DTA/TG ve SEM teknikleri kullanılarak belirlenmiştir. Ca(OH)2 ve CaCO3 kullanılarak üretilen hidroksiapatit ilavesi, ortaya çıkan yapıştırıcıların basınç dayanımını (74 MPa'dan 106 MPa ve 103 MPa'ya) arttırmıştır. Bu yeni kemik yapıştırıcıları, ticari olarak temin edilebilen örneklerle karşılaştırılabilecek mekanik dayanımlara sahiptir ve hidroksiapatitin kemik yapısında mevcut doğal bir mineral olduğu için daha biyolojik olarak uyumlu olduğuna inanılmaktadır.

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