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

Yıl 2019, Cilt: 21 Sayı: 62, 607 - 620, 21.05.2019

Mehtap Demirel , Dilek Çanakçı

https://doi.org/10.21205/deufmd.2019216224

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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