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Liu, W., Zhang, J., Rethore, G., Khairoun, K., Pilet, P., Tancret, F., Bouler, J.-M. & Weiss, P. (2014) A novel injectable, cohesive and toughened Si-HPMC (silanized-hydroxypropyl methylcellulose) composite calcium phosphate cement for bone substitution. Acta Biomater. 10 3335–3345. 
Added by: Laurent Cournède (2016-03-10 21:01:55)
Type de référence: Article
DOI: 10.1016/j.actbio.2014.03.009
Numéro d'identification (ISBN etc.): 1742-7061
Clé BibTeX: Liu2014
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Catégories: ID2M
Mots-clés: 3-dimensional culture, augmentation, bone regeneration, Calcium phosphate cements, compressive strength, fracture treatment, handling properties, Hydrogel, Hydroxyapatite, Mechanical properties, mechanical-properties, reinforcement, spinal surgery, vertebroplasty
Créateurs: Bouler, Khairoun, Liu, Pilet, Rethore, Tancret, Weiss, Zhang
Collection: Acta Biomater.
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Résumé     
This study reports on the incorporation of the self-setting polysaccharide derivative hydrogel (silanized-hydroxypropyl methylcellulose, Si-HPMC) into the formulation of calcium phosphate cements (CPCs) to develop a novel injectable material for bone substitution. The effects of Si-HPMC on the handling properties (injectability, cohesion and setting time) and mechanical properties (Young's modulus, fracture toughness, flexural and compressive strength) of CPCs were systematically studied. It was found that Si-HPMC could endow composite CPC pastes with an appealing rheological behavior at the early stage of setting, promoting its application in open bone cavities. Moreover, Si-HPMC gave the composite CPC good injectability and cohesion, and reduced the setting time. Si-HPMC increased the porosity of CPCs after hardening, especially the macroporosity as a result of entrapped air bubbles; however, it improved, rather than compromised, the mechanical properties of composite CPCs, which demonstrates a strong toughening and strengthening effect. In view of the above, the Si-HPMC composite CPC may be particularly promising as bone substitute material for clinic application. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Added by: Laurent Cournède  
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