A new fluorinated urethane dimethacrylate with carboxylic groups for use in dental adhesive compositions
| Autor: | Tinca Buruiana, Horia Aldea, Violeta Melinte, Emil C. Buruiana, Irina M. Pelin |
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| Rok vydání: | 2016 |
| Předmět: |
Calcium Phosphates
Magnetic Resonance Spectroscopy Materials science Halogenation Surface Properties Polyurethanes Dental Cements Bioengineering 02 engineering and technology Methacrylate Biomaterials Contact angle 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Dental cement Materials Testing Polymer chemistry Solubility Triethylene glycol Ethylene oxide Water 030206 dentistry 021001 nanoscience & nanotechnology Durapatite chemistry Mechanics of Materials Vickers hardness test Microscopy Electron Scanning Methacrylates Adsorption Adhesive 0210 nano-technology |
| Zdroj: | Materials Science and Engineering: C. 62:96-104 |
| ISSN: | 0928-4931 |
| DOI: | 10.1016/j.msec.2016.01.033 |
| Popis: | A urethane macromer containing hexafluoroisopropylidene, poly(ethylene oxide) and carboxylic moieties (UF-DMA) was synthesized and used in proportions varying between 15 and 35 wt.% (F1-F3) in dental adhesive formulations besides BisGMA, triethylene glycol dimethacrylate and 2-hydroxyethyl methacrylate. The FTIR and (1)H ((13)C) NMR spectra confirmed the chemical structure of the UF-DMA. The experimental adhesives were characterized with regard to the degree of conversion, water sorption/solubility, contact angle, diffusion coefficient, Vickers hardness, and morphology of the crosslinked networks and compared with the specimens containing 10 wt.% hydroxyapatite (HAP) or calcium phosphate (CaP). The conversion degree (after 180 s of irradiation with visible light) ranged from 59.5% (F1) to 74.8% (F3), whereas the water sorption was between 23.15 μg mm(-3) (F1) and 40.52 μg mm(-3) (F3). Upon the addition of HAP or CaP this parameter attained values of 37.82-49.14 μg mm(-3) (F1-F3-HAP) and 34.58-45.56 μg mm(-3), respectively. Also, the formation of resin tags through the infiltration of a dental composition (F3) was visualized by SEM analysis. The results suggest that UF-DMA taken as co-monomer in dental adhesives of acrylic type may provide improved properties in the moist environment of the mouth. |
| Databáze: | OpenAIRE |
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