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Evaluation of Bactericidal Effects of Ultraviolet Light C Irradiation on Cariogenic Bacteria: An In Vitro Study

Moayyad Alharbi, Fahad Bakitian, and Ali Alenezi of BMC Oral Health report about how ultraviolet light C (UVL-C) irradiation can demonstrate an antimicrobial action against various pathogens. This study aimed to evaluate the bactericidal effect of UVL-C irradiation against cariogenic oral bacteria (Streptococcus mutans) in single layers and colonies grown on solid surfaces. MethodsTwo different experiments were performed. In the first experiment, a single layer of Streptococcus mutans bacteria on agar plates was exposed to UVL-C irradiation at energies from 0 to 21 mWs/cm2. The second experiment was conducted to inhibit viability of bacterial colonies on solid surfaces. The…
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