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Microwave assisted urethane grafted nano-apatites for dental adhesives
Journal of Bioactive and Compatible Polymers ( IF 2.1 ) Pub Date : 2020-09-10 , DOI: 10.1177/0883911520956263
Natasha Hussain 1 , Hina Khalid 1 , Yara Khalid AlMaimouni 2 , Samman Ikram 3 , Maria Khan 4 , Shahab Ud Din 5 , Ahmed Talal 2 , Abdul Samad Khan 2
Affiliation  

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.

中文翻译:

用于牙科粘合剂的微波辅助氨基甲酸酯接枝纳米磷灰石

目的是使用微波辐射方法在尽可能短的时间内合成氨基甲酸乙酯接枝的纳米磷灰石,并将其用于合成实验性牙科粘合剂。研究了合成接枝纳米磷灰石的结构、形态、热和机械行为。然后,将这些接枝的纳米磷灰石颗粒以不同的浓度,即 5wt.%、10wt.% 和 15wt.% 掺入二甲基丙烯酸酯树脂中以开发生物活性粘合剂。评估了去离子水和磷酸盐缓冲盐水中的重量测量分析、努氏显微硬度和转化程度。在6小时、24小时和48小时用变形链球菌研究细菌粘附。使用单向方差分析进行统计分析。氨基甲酸酯二甲基丙烯酸酯成功接枝在纳米磷灰石表面,光谱分析证实存在氨基甲酸酯和磷酸盐峰。在两种介质中都发现了接枝填料浓度与重量损失之间的反比关系。各组之间的显微硬度和转化程度没有显着差异,所有组的转化程度在83%至86%的范围内。与 5wt.% 和 10wt.% 相比,15wt.% 组的细菌菌落平均数显着降低。接枝的纳米磷灰石在粘合剂树脂掺入方面表现出良好的结果,其中 15wt.% 组比其他组显示出更好的结果。在两种介质中都发现了接枝填料浓度与重量损失之间的反比关系。各组之间的显微硬度和转化程度没有显着差异,所有组的转化程度在83%至86%的范围内。与 5wt.% 和 10wt.% 相比,15wt.% 组的细菌菌落平均数显着降低。接枝的纳米磷灰石在粘合剂树脂掺入方面表现出良好的结果,其中 15wt.% 组比其他组显示出更好的结果。在两种介质中都发现了接枝填料浓度与重量损失之间的反比关系。各组之间的显微硬度和转化程度没有显着差异,所有组的转化程度在83%至86%的范围内。与 5wt.% 和 10wt.% 相比,15wt.% 组的细菌菌落平均数显着降低。接枝的纳米磷灰石在粘合剂树脂掺入方面表现出良好的结果,其中 15wt.% 组比其他组显示出更好的结果。与 5wt.% 和 10wt.% 相比,15wt.% 组的细菌菌落平均数显着降低。接枝的纳米磷灰石在粘合剂树脂掺入方面表现出良好的结果,其中 15wt.% 组比其他组显示出更好的结果。与 5wt.% 和 10wt.% 相比,15wt.% 组的细菌菌落平均数显着降低。接枝的纳米磷灰石在粘合剂树脂掺入方面表现出良好的结果,其中 15wt.% 组比其他组显示出更好的结果。
更新日期:2020-09-10
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