نتایج جستجو برای: biomaterials and hrtem

تعداد نتایج: 16829093  

Journal: :Micron 2006
F Pailloux D Imhoff M Jublot F Paumier R J Gaboriaud M Jaouen

Y2O3 thin films deposited on (001)-MgO substrate have been investigated by high-resolution transmission electron microscopy (HRTEM) and electron energy loss spectroscopy. Digital processing of the HRTEM images reveals the presence of grains with a crystallographic structure different from that of the rest of the film (Ia3). The spectrum imaging technique has been applied in vicinity of the Y2O3...

Journal: :IOSR Journal of Electrical and Electronics Engineering 2016

Journal: :journal of craniomaxillofacial research 0
farnoush mohammadi craniomaxillofacial research center, tehran university of medical sciences, tehran, iran. oral and maxillofacial surgery department, school of dentistry, tehran university of medical sciences, tehran, iran. abolfazl ahmadieh yazdi craniomaxillofacial research center, tehran university of medical sciences, tehran, iran. farhad noravsh craniomaxillofacial research center, tehran university of medical sciences, tehran, iran. hassan hosseini toudeshki craniomaxillofacial research center, tehran university of medical sciences, tehran, iran. oral and maxillofacial surgery department, school of dentistry, tehran university of medical sciences, tehran, iran. naghmeh bahrami craniomaxillofacial research center, tehran university of medical sciences, tehran, iran .oral and maxillofacial surgery department, school of dentistry, tehran university of medical sciences, tehran, iran. iranian tissue bank & research center, tehran university of medical sciences, tehran, iran.

introduction : efforts are being made to improve the efficacy of biomaterials used as bone substitutes for bone regeneration in the oral and maxillofacial region. graft materials have been recently produced in iran; however, studies are required to confirm their efficacy. this study aimed to compare the histomorphometric results of using mineralized allografts produced by the hamanandsaz baft k...

2017
Michiel W. Pot Toin H. van Kuppevelt Veronica K. Gonzales Pieter Buma Joanna IntHout Rob B.M. de Vries Willeke F. Daamen

Bone marrow stimulation may be applied to regenerate focal cartilage defects, but generally results in transient clinical improvement and formation of fibrocartilage rather than hyaline cartilage. Tissue engineering and regenerative medicine strive to develop new solutions to regenerate hyaline cartilage tissue. This systematic review and meta-analysis provides a comprehensive overview of curre...

2017
Nathaniel Hassan Kirstin McCarville Kenzo Morinaga Cristiane M Mengatto Peter Langfelder Akishige Hokugo Yu Tahara Christopher S Colwell Ichiro Nishimura

Circadian rhythms maintain a high level of homeostasis through internal feed-forward and -backward regulation by core molecules. In this study, we report the highly unusual peripheral circadian rhythm of bone marrow mesenchymal stromal cells (BMSCs) induced by titanium-based biomaterials with complex surface modifications (Ti biomaterial) commonly used for dental and orthopedic implants. When c...

Journal: :Current drug targets 2013
Andreia Vasconcelos Artur Cavaco-Paulo

Keratins are naturally derived proteins that can be fabricated into several biomaterials morphologies including films, sponges and hydrogels. As a physical matrix, keratin biomaterials have several advantages of both natural and synthetic materials that are useful in tissue engineering and controlled released applications. Like other naturally derived protein biomaterials, such as collagen, ker...

2016
Amir A. Zadpoor

Recent advances in additive manufacturing (AM) techniques (otherwise known as 3D printing) have enabled fabrication of a new class of porous biomaterials (Figure 1) with arbitrarily complex and precisely controlled topologies that e.g. resemble the geometry and micro-architecture of (trabecular) bone. Since the geometry of scaffolds and biomaterials is an important factor in bone tissue regener...

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