Microwave assisted urethane grafted nano-apatites for dental adhesives
| Autor: | Abdul Samad Khan, Yara Khalid AlMaimouni, Natasha Hussain, Shahab Ud Din, Hina Khalid, Maria Khan, Ahmed Talal, Samman Ikram |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Absorption of water Polymers and Plastics Bioengineering 030206 dentistry 02 engineering and technology Dental Adhesives Time duration 021001 nanoscience & nanotechnology Microwave assisted Indentation hardness Biomaterials 03 medical and health sciences 0302 clinical medicine Nano hydroxyapatite Chemical engineering Nano Microwave irradiation Materials Chemistry 0210 nano-technology |
| Zdroj: | Journal of Bioactive and Compatible Polymers. 35:479-490 |
| ISSN: | 1530-8030 0883-9115 |
| DOI: | 10.1177/0883911520956263 |
| Popis: | The objectives were to synthesize urethane grafted nano-apatite in shortest possible time duration using the microwave irradiation method and to utilize them for synthesis of experimental dental adhesives. The structural, morphological, thermal, and mechanical behavior of synthesized grafted nano-apatite were investigated. Then, these grafted nano-apatite particles were incorporated in various concentrations that is, 5wt.%, 10wt.%, and 15wt.% into dimethacrylate resins to develop bioactive adhesives. The weight measurement analysis in deionized water and phosphate buffer saline, Knoop micro-hardness, and degree of conversion were evaluated. The bacterial adhesion was investigated with Streptococcus mutans at 6h, 24h, and 48h. Statistical analysis was conducted using one-way ANOVA. The urethane dimethacrylate was successfully grafted on the nano-apatite surface and spectroscopic analysis confirmed the presence of urethane and phosphate peaks. An inverse relationship was found in both media between the concentration of grafted fillers and weight loss. No significant difference was observed in the micro-hardness and degree of conversion among the groups, whereby the degree of conversion for all groups was in the range of 83% to 86%. The mean number of bacterial colonies was significantly lower in the 15wt.% group compared to 5wt.% and 10wt.%. The grafted nano-apatite presented favorable results for adhesive resin incorporation, where 15wt.% group comparatively showed superior results than other groups. |
| Databáze: | OpenAIRE |
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