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Ethanolic extracts of Aloe vera and propolis as cavity disinfectants: An in vitro study

机译：芦荟和蜂胶的乙醇提取物作为腔体消毒剂的体外研究

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Introduction: Though a large number of agents including chlorhexidine have been used for cavity disinfection during restorative procedures, till date none has proved to be "ideal." Thus, there is a need for an alternative cavity disinfectant, which is safe, effective, and economic. Herbal extracts of Aloe vera and propolis have shown the potential to be used as cavity disinfectants but not much is known about them. The aim of this study was to evaluate and compare the antibacterial activity of ethanolic extracts of Aloe vera and propolis against S. mutans and L. acidophilus, along with assessing the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). Materials and Methods: The study included three groups: 2% chlorhexidine solution (group I), ethanolic extract of Aloe vera (group II), and ethanolic extract of propolis (group III). An MIC test was carried out using tissue culture microplates and serial dilution technique and later to MBC, an aliquot of each incubated well with concentrations higher than MIC was subcultured on brain heart infusion (BHI) medium. Antibacterial assay was carried out using agar disk diffusion technique and zones of inhibition were determined. One-way analysis of variance (ANOVA) was used for intergroup comparison followed by post hoc Tukey's test for groupwise comparison. Results: Group II and Group III showed bacteriostatic effect but no bactericidal effect against both S. mutans and L. acidophilus. There was a significant difference in the antibacterial activity against both the tested microorganisms among all the groups, the highest being in group I followed by group II and group III. Conclusions: Ethanolic extracts of Aloe vera and propolis are only bacteriostatic and their antibacterial efficacy is inferior to chlorhexidine against both S. mutans and L. acidophilus.
机译：简介：尽管在修复过程中已经使用了包括洗必泰在内的大量药物进行腔体消毒，但迄今为止，没有一种药物被证明是“理想的”。因此，需要安全，有效且经济的替代腔体消毒剂。芦荟和蜂胶的草药提取物已显示出可用作腔体消毒剂的潜力，但对其了解不多。这项研究的目的是评估和比较芦荟和蜂胶的乙醇提取物对变形链球菌和嗜酸乳杆菌的抗菌活性，并评估最小抑菌浓度（MIC）和最小杀菌浓度（MBC）。材料和方法：研究分为三组：2％洗必泰溶液（I组），芦荟乙醇提取物（II组）和蜂胶乙醇提取物（III组）。使用组织培养微孔板和系列稀释技术进行MIC测试，然后移至MBC，然后将每份培养孔的等分试样以高于MIC的浓度在脑心浸液（BHI）培养基上传代培养。使用琼脂圆盘扩散技术进行抗菌测定，并确定抑制区域。使用单向方差分析（ANOVA）进行组间比较，然后使用事后Tukey检验进行组间比较。结果：第二组和第三组对变形链球菌和嗜酸乳杆菌均显示出抑菌作用，但没有杀菌作用。在所有组中，对两种被测微生物的抗菌活性均存在显着差异，其中最高的是第一组，其次是第二组和第三组。结论：芦荟和蜂胶的乙醇提取物仅具有抑菌作用，其抗菌效果不如洗必泰，对变形链球菌和嗜酸乳杆菌均有效。

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