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In vitro assessment of cytotoxicity of giomer on human gingival fibroblasts

Pourabbas, R., Farajnia, S., Kimyai, S., Mohammadnejad, L., Johnson, A. and Nejatian, T. (2009) In vitro assessment of cytotoxicity of giomer on human gingival fibroblasts. African Journal of Biotechnology, 8 (20). pp. 5522-5526. ISSN 1684-5315

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Root coverage on restored root surfaces has been considered as a challenging issue. The evaluation of cytotoxic effects of restorative materials is a fundamental requirement for sustaining the cell attachment and the clinical success of root coverage. The aim of the present study was to compare the human gingival fibroblast cytotoxicity of the recently introduced giomer composite (GC) with resin ionomer (RI) restorative material. Discs (6x2 mm) of GC and RI restorative materials were prepared using sterile Teflon mold. Extracts from the materials were incubated to cell culture medium for 24, 48 and 72 h. Human gingival fibroblasts (HGF) were exposed to the extracts of the materials while the un-incubated media served as the control group. The cytotoxicity of the materials were evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. In order to compare the mean values of the measured parameters a Kruskal-Walis test was carried out. MTT assay indicated that human gingival fibroblasts proliferated well in the presence of GC extract. The proliferation rate was higher in cells incubated with GC compared to RI extracts but the differences were not statistically significant (p= 0.09). This in vitro study indicated that GC is a non-toxic material for HGF. However, further studies are needed to assess the other biologic and clinical behavior of this material prior to it being considered as a potentially suitable restorative material to restore the carious root lesions candidated to root coverage procedures.

Item Type: Article
Copyright, Publisher and Additional Information: © 2009 Academic Journals. Reproduced in accordance with the publisher's self-archiving policy.
Keywords: Root coverage material; giomer; ionomer; cell cytotoxicity
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Medicine, Dentistry and Health (Sheffield) > School of Dentistry (Sheffield)
Depositing User: Miss Anthea Tucker
Date Deposited: 28 Jan 2010 16:47
Last Modified: 27 Jun 2014 11:32
Published Version: http://www.academicjournals.org/AJB/index.htm
Status: Published
Publisher: Academic Publishers
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/10332

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