https://scholars.lib.ntu.edu.tw/handle/123456789/630613
Title: | Evaluation of carbon dioxide-based urethane acrylate composites for sealers of root canal obturation | Authors: | HAO-HUENG CHANG Tseng, Yi Ting Huang, Sheng Wun Kuo, Yi Fang Yeh, Chun Liang Wu, Chien Hsin Huang, Ying Chi RU-JONG JENG JIANG-JEN LIN CHUN-PIN LIN |
Keywords: | Carbon dioxide-based resins | Composites | Nanoscale silicate platelets | Root canal obturation | Urethane acrylates | Issue Date: | 1-Feb-2020 | Publisher: | MDPI | Journal Volume: | 12 | Journal Issue: | 2 | Source: | Polymers | Abstract: | A new root canal sealer was developed based on urethane acrylates using polycarbonate polyol (PCPO), a macrodiol prepared in the consumption of carbon dioxide as feedstock. The superior mechanical properties and biostability nature of PCPO-based urethane acrylates were then co-crosslinked with a difunctional monomer of tripropylene glycol diarylate (TPGDA) as sealers for resin matrix. Moreover, nanoscale silicate platelets (NSPs) immobilized with silver nanoparticles (AgNPs) and/or zinc oxide nanoparticles (ZnONPs) were introduced to enhance the antibacterial effect for the sealers. The biocompatibility and the antibacterial effect were investigated by Alamar blue assay and LDH assay. In addition, the antibacterial efficiency was performed by using Enterococcus faecalis (E. faecalis) as microbial response evaluation. These results demonstrate that the PCPO-based urethane acrylates with 50 ppm of both AgNP and ZnONP immobilized on silicate platelets, i.e., Ag/ZnO@NSP, exhibited great potential as an antibacterial composite for the sealer of root canal obturation. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/630613 | ISSN: | 2073-4360 | DOI: | 10.3390/polym12020482 |
Appears in Collections: | 牙醫學系 |
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