فهرست نشریات علمی دسترسی آزاد ایران

Carbon quantum dots (CQDs) are a type of carbon-based nanomaterials that have recently garnered attention as emerging alternatives to conventional semiconductor quantum dots. Colloidal quantum dots (CQDs) provide several advantageous characteristics, including minimal toxicity, environmental compatibility, cost-effectiveness, photostability, favorable charge transfer properties with increased electronic conductivity, and easily reproducible manufacturing techniques. Assessing the antibacterial properties of CQDs by testing the sensitivity of different concentrations of CQDs on Oral Lactobacilli then comparing with chlorhexidine 0.2% and deionized water. Agar well technique was used. No bacterial growth was measured when inhibitions zones around each well were seen. No inhibition zone means a full resistance of the bacteria to the tested agent. The results showed that all the tested concentrations of CQDs exhibited antibacterial activity against Lactobacilli with different inhibition zones, which increases with increasing concentration of CQDs. Low concentrations of CQDs have very high antibacterial activity against lactobacilli, and this could be a new effective material to be used in preventive dentistry.