نتایج جستجو برای: biomaterial

تعداد نتایج: 4841  

2004
Josephine Allen Yang Vladimir Turzhitsky Vadim Backman Guillermo Ameer

Introduction The characterization of cellular interactions with a biomaterial surface is important to the development of novel biomaterials. Traditional methods used to characterize processes such as cell adhesion, retention, growth, and phenotypic differentiation on biomaterials are time consuming, destructive, and do not allow for in situ quantitative assessment. The overall goal of this rese...

Journal: :The International journal of oral & maxillofacial implants 2015
Antonio Scarano Adriano Piattelli Giovanna Murmura Giovanna Iezzi Bartolomeo Assenza Carlo Mancino

PURPOSE Ridge expansion is used to widen narrow ridges with adequate height for implant placement. This human case series presents the clinical and histologic results of delayed expansion of mandibles by ultrasonic surgery. MATERIALS AND METHODS Patients with residual alveolar ridge width between 2.3 and 4.1 mm in the coronal area of the posterior mandible were included in the study. First, f...

Journal: :International journal of immunopathology and pharmacology 2011
E Saino L Fassina S Van Vlierberghe M A Avanzini P Dubruel G Magenes L Visai F Benazzo

Bone tissue engineering typically uses biomaterial scaffolds, osteoblasts or cells that can become osteoblasts, and biophysical stimulations to promote cell attachment and differentiation. In this study, we investigated the effects of an electromagnetic wave on mesenchymal stromal cells isolated from the bone marrow and seeded upon gelatin cryogel disks. In comparison with control conditions wi...

Journal: :Biomaterials 1999
B Kreklau M Sittinger M B Mensing C Voigt G Berger G R Burmester R Rahmanzadeh U Gross

In isolated posttraumatic or idiopathic joint defects the chondral layers and adjacent subchondral spongy bone are usually destructed. For regeneration we suggest the in vitro formation of a cartilage-coated biomaterial carriers (biphases) in order to fill the correspondingjoint defects. In this study Biocoral, a natural coralline material made of calcium carbonate, and calcite, a synthetic cal...

Journal: :Biomaterials 2013
Seyedmojtaba Daghighi Jelmer Sjollema Henny C van der Mei Henk J Busscher Edward T J Rochford

Extended life expectancy and medical development has led to an increased reliance on biomaterial implants and devices to support or restore human anatomy and function. However, the presence of an implanted biomaterial results in an increased susceptibility to infection. Due to the severity of the potential outcomes of biomaterial-associated infection, different strategies have been employed to ...

Journal: :Trends in cardiovascular medicine 2008
Guido Krenning Jan-Renier A J Moonen Marja J A van Luyn Martin C Harmsen

Vascular tissue engineering aims to restore blood flow by seeding artificial tubular scaffolds with endothelial and smooth muscle cells, thus creating bioartificial blood vessels. Herein, the progenitors of smooth muscle and endothelial cells hold great promise because they efficiently differentiate and harbor longevity. In this review, we describe a novel tissue engineering approach that uses ...

Journal: :Journal of immunology 2002
Jonas Andersson Kristina Nilsson Ekdahl Rolf Larsson Ulf R Nilsson Bo Nilsson

Contact between blood and a biomaterial surface induces an immediate complement-mediated inflammatory response. Under these conditions, the alternative pathway of complement is often initiated and amplified on the biomaterial surface. Adsorption of a protein such as C3 to a polymer surface induces conformational changes in the protein. Based on the expression on adsorbed C3 of conformational ne...

Journal: :Journal of biomaterials applications 2012
Kathryn A McKenna Kenton W Gregory Rebecca C Sarao Cheryl L Maslen Robert W Glanville Monica T Hinds

An off-the-shelf vascular graft biomaterial for vascular bypass surgeries is an unmet clinical need. The vascular biomaterial must support cell growth, be non-thrombogenic, minimize intimal hyperplasia, match the structural properties of native vessels, and allow for regeneration of arterial tissue. Electrospun recombinant human tropoelastin (rTE) as a medial component of a vascular graft scaff...

Journal: :Biomaterials 2005
Maria A Bokhari Galip Akay Shuguang Zhang Mark A Birch

The objective of this study was to investigate the effect of combining two biomaterials on osteoblast proliferation, differentiation and mineralised matrix formation in vitro. The first biomaterial has a well-defined architecture and is known as PolyHIPE polymer (PHP). The second biomaterial is a biologically inspired self-assembling peptide hydrogel (RAD16-I, also called PuraMatrix) that produ...

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