Freeze gelated porous membranes for periodontal tissue regeneration

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autorinnen und Autoren: Qasim S, Delaine-Smith R, Rawlinson A, Fey T, Rehman I
Zeitschrift: Acta Biomaterialia
Verlag: Elsevier
Jahr der Veröffentlichung: 2015
Band: 23
Seitenbereich: 317-328
ISSN: 1742-7061


Guided tissue regeneration (GTR) membranes have been used for the management of destructive forms of periodontal disease as a means of aiding regeneration of lost supporting tissues, including the alveolar bone, cementum, gingiva and periodontal ligaments (PDL). Currently available GTR membranes are either non-biodegradable, requiring a second surgery for removal, or biodegradable. The mechanical and biofunctional limitations of currently available membranes result in a limited and unpredictable treatment outcome in terms of periodontal tissue regeneration. In this study, porous membranes of chitosan (CH) were fabricated with or without hydroxyapatite (HA) using the simple technique of freeze gelation (FG) via two different solvents systems, acetic acid (ACa) or ascorbic acid (ASa). The aim was to prepare porous membranes to be used for GTR to improve periodontal regeneration. FG membranes were characterized for ultra-structural morphology, physiochemical properties, water uptake, degradation, mechanical properties, and biocompatibility with mature and progenitor osteogenic cells. Fourier transform infrared (FTIR) spectroscopy confirmed the presence of hydroxyapatite and its interaction with chitosan. mu CT analysis showed membranes had 85-77% porosity. Mechanical properties and degradation rate were affected by solvent type and the presence of hydroxyapatite. Culture of human osteosarcoma cells (MG63) and human embryonic stem cell-derived mesenchymal progenitors (hES-MPs) showed that all membranes supported cell proliferation and long term matrix deposition was supported by HA incorporated membranes. These CH and HA composite membranes show their potential use for GTR applications in periodontal lesions and in addition FG membranes could be further tuned to achieve characteristics desirable of a GTR membrane for periodontal regeneration. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (

FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Fey, Tobias Dr.
Lehrstuhl für Werkstoffwissenschaften (Glas und Keramik)


Qasim, S., Delaine-Smith, R., Rawlinson, A., Fey, T., & Rehman, I. (2015). Freeze gelated porous membranes for periodontal tissue regeneration. Acta Biomaterialia, 23, 317-328.

Qasim, SB, et al. "Freeze gelated porous membranes for periodontal tissue regeneration." Acta Biomaterialia 23 (2015): 317-328.


Zuletzt aktualisiert 2018-11-08 um 02:44