alexa Antibacterial And Mechanical Assays Of Resin Modified Glass Ionomer Containing Propolis Extract
ISSN: 2161-1122

Dentistry
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23rd Global Dentists and Pediatric Dentistry Annual Meeting
July 17-18, 2017 Munich, Germany

Talat Mohammed Beltagy and Marwa Ezzat Abd-Elmonsef
Kafr El-Sheikh University, Egypt
Tanta University, Egypt
Posters & Accepted Abstracts: Dentistry
DOI: 10.4172/2161-1122-C1-021
Abstract
Introduction & Objective: The antibacterial efficacy of restorative materials had an important role in preventing recurrent caries. The objective of this study was to evaluate in-vitro antibacterial and mechanical assays of Vitremer containing ethanolic extract of propolis (EEP). Materials & Methods: 1) Antibacterial assay: Standard strain of Streptococcus mutans and Lactobacillus acidophilus were used for the determination of minimum inhibitory concentration (MIC) of EEP/Vitremer. 2) Mechanical assay - A shear bond strength (SBS): 60-half crowns of non-carious extracted from 2nd primary molars were placed at standard moulds containing teflon disc that had 4 mm x 3 mm central hole and divided into 4 groups (n=15) according to the different EEP concentrations. Group I: 10%, group II: 25%, group III: 50% EEP-Vitremer mixture, and group IV (control): 0% EEP/Vitremer and SBS was assessed using Instron machine B-Microhardness: Sixty standard disc-shaped specimens were prepared from mixture 0%, 10%, 25%, and 50%, n=15 and nanoindentation value was recorded. Data were analyzed using one-way ANOVA and post-hoc test. Results: Only MIC of 10%, 25%, and 50% mixture showed growth inhibition against S. mutans, compared to 25% and 50% against L. acidophilus. SBS showed that 0% EEP recorded the highest value followed by 10% mixture but the difference was not significant (p>0.05), while 25% and 50% reported the lowest values and the differences were significant (p<0.05). 25% and 50% mixtures recorded the highest significant microhardness (p<0.05). 0% EEP and 10% mixtures displayed no significant differences between them (P>0.05). Conclusions: 25% EEP-Vitremer mixture was the most suitable concentration as it exhibits significant antibacterial and mechanical assays.
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