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Silorane resin supports proliferation, differentiation, and mineralization of MLO‐A5 bone cells in vitro and bone formation in vivo
Author(s) -
Eick J. David,
BarraganAdjemian Cielo,
Rosser Jennifer,
Melander Jennifer R.,
Dusevich Vladimir,
Weiler Rachel A.,
Miller Bradley D.,
Kilway Kathleen V.,
Dallas Mark R.,
Bi Lianxing,
Nalvarte Elisabet L.,
Bonewald Lynda F.
Publication year - 2012
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.32649
Subject(s) - in vivo , alkaline phosphatase , chemistry , mineralization (soil science) , osteoblast , methacrylate , von kossa stain , in vitro , cell growth , polymerization , biochemistry , biology , polymer , organic chemistry , microbiology and biotechnology , nitrogen , enzyme
Abstract Methyl methacrylate used in bone cements has drawbacks of toxicity, high exotherm, and considerable shrinkage. A new resin, based on silorane/oxirane chemistry, has been shown to have little toxicity, low exotherm, and low shrinkage. We hypothesized that silorane‐based resins may also be useful as components of bone cements as well as other bone applications and began testing on bone cell function in vitro and in vivo . MLO‐A5, late osteoblast cells, were exposed to polymerized silorane (SilMix) resin (and a standard polymerized bisGMA/TEGDMA methacrylate (BT) resin and compared to culture wells without resins as control. A significant cytotoxic effect was observed with the BT resin resulting in no cell growth, whereas in contrast, SilMix resin had no toxic effects on MLO‐A5 cell proliferation, differentiation, nor mineralization. The cells cultured with SilMix produced increasing amounts of alkaline phosphatase (1.8‐fold) compared to control cultures. Compared to control cultures, an actual enhancement of mineralization was observed in the silorane resin‐containing cultures at days 10 and 11 as determined by von Kossa (1.8–2.0 fold increase) and Alizarin red staining (1.8‐fold increase). A normal bone calcium/phosphate atomic ratio was observed by elemental analysis along with normal collagen formation. When used in vivo to stabilize osteotomies, no inflammatory response was observed, and the bone continued to heal. In conclusion, the silorane resin, SilMix, was shown to not only be non cytototoxic, but actually supported bone cell function. Therefore, this resin has significant potential for the development of a nontoxic bone cement or bone stabilizer. © 2012 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2012.