Investigation of The Microstructures And Mechanical Properties of New Biografts As Alternative Bone Graft

Öz

In this study, alternative biografts used for orthopedic applications were produced by sol gel method. The effects of boric acid, MgO and SrBr₂ compounds on the morphological structure and mechanical properties of the produced biografts were investigated. For these purposes, the morphological effects of biografts were examined by FTIR, XRD and SEM-EDX analyzes and their mechanical properties were investigated by hardness and compression tests.

As a result of FTIR and XRD investigations on all biografts, it was observed that the additive materials decreased the crystallinity and formed the HA (Hydroxyapatite), β-TCP (Beta tricalcium phosphate), Ca₃ (Si₃O₉), Ca₂H₄O₉P₂ phase structures. In addition, as a result of the SEM-EDX and mechanical tests, it has been determined that different sizes of grain structure in all biografts are formed and boric acid, MgO and SrBr₂ additives increase the compressive strength and hardness values.

Anahtar Kelimeler

• Bone grafts,Sol gel,Mechanical properties

Alternatif Kemik Grefti Olarak Üretilen Yeni Biyogreftlerin Mikroyapılarının ve Mekanik Özelliklerinin Araştırılması

Öz

Bu çalışmada, ortopedik uygulamalar için kullanılan alternatif biyogreftler sol jel yöntemi ile üretilmiştir.  Üretilen biyogreftlerin morfolojik yapısı ve mekanik özellikleri üzerine, borik asit, MgO ve SrBr2 bileşiklerinin etkileri incelenmiştir. Bu amaçlar doğrultusunda, biyogreftlerin morfolojik etkileri FTIR, XRD ve SEM-EDX analizleri ile incelenirken, mekanik özellikleri de sertlik ve basma testleri yapılarak araştırılmıştır.

Bütün biyogreftler üzerine yapılan FTIR ve XRD incelemeleri sonucu, biyogreftler de katkı malzemelerinin kristaliteyi düşürdüğü ve HA(Hidroksiapatit), β-TCP (Beta trikalsiyum fosfat), Ca3(Si3O9), Ca2H4O9P2 faz yapılarını oluşturduğu gözlenmiştir. Ayrıca yapılan SEM-EDX ve mekanik testler sonucu da, bütün biyogreftlerde farklı boyutlarda tane yapısının oluştuğu ve borik asit, MgO ve SrBr2 katkı malzemelerinin basma mukavemeti ve sertlik değerlerini yükselttiği belirlenmiştir.

Anahtar Kelimeler

• Kemik grefti,Sol jel,Mekanik özellikler

Kaynakça

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