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A photo-crosslinked hybrid interpenetrating polymer network (IPN) for antibacterial coatings on denture base materials

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Abstract

An interpenetrating polymer network (IPN) structured antibacterial layer was prepared on dental base materials containing quaternary ammonium salt monomers (HMDQAs), polyurethane dimethacrylate oligomers (BIHs) and functionalized SiO2 nanoparticles using a one-step photo-crosslinking method. Scanning electron microscopy (SEM), atomic force microscopy (AFM), ultraviolet near-infrared visible spectrophotometry (UV-3600) and water contact angles were used to study the surface properties of the coatings. SiO2 nanoparticles changed the hydrophilicity of the cationic antimicrobial surface and increased its contact angle. Furthermore, the IPN coatings exhibited highly effective antibacterial activity on the modified dental base material, poly(methyl methacrylate) (PMMA), against Streptococcus mutans, which was evaluated by plate colony counting, optical density (OD), SEM and a live/dead assay. The MTT assay confirmed their biocompatibility. The IPN silicon complexed coating displayed good transparency, excellent antibacterial activity, and no cytotoxicity, which indicated enormous potential for the treatment of denture bases.

Graphical abstract: A photo-crosslinked hybrid interpenetrating polymer network (IPN) for antibacterial coatings on denture base materials

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Publication details

The article was received on 20 May 2019, accepted on 30 Sep 2019 and first published on 30 Sep 2019


Article type: Paper
DOI: 10.1039/C9NJ02609F
New J. Chem., 2019, Advance Article

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    A photo-crosslinked hybrid interpenetrating polymer network (IPN) for antibacterial coatings on denture base materials

    Q. Cheng, X. Guo, J. Zou, X. Shi, S. Ding, Z. Shi, S. Zhu and Z. Cui, New J. Chem., 2019, Advance Article , DOI: 10.1039/C9NJ02609F

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