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Browsing by Author Sadony, Doaa M.

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Antibacterial effect of metallic nanoparticles on Streptococcus mutans bacterial strain with or without diode laser (970 nm)

Authors: Sadony, Doaa M.; Advisor: -; Participants: Abozaid, Hanan El-sayed (2020)

Thirty freshly a traumatically extracted premolars human tooth were collected, and cylindrical cavity in crowns with 4 mm diameter and 5 mm depth was prepared and inoculated with S. mutans for 24 h. The tooth were randomlly divided into equal expermintal groups (6 each): group 1, positive control group by S. mutans bacterial strain; group 2, irrigation with silver nanoparticles (AgNPs) for 3 min; group 3, irrigation with gold nanoparticles (AuNPs) for 3 min; group 4, 3 ml AgNPs + irradiation with diode laser for 60 s; and group 5, 3 ml AuNPs + irradiation with diode for 60 s. The specimens were collected from the teeth sample, and colony-forming units (CFU’s) were observed by counting...

Effect of photodynamic therapy using diode laser and a novel plant extract irrigant against Enterococcus faecalis and Candida albicans

Authors: Sadony, Doaa M.; Advisor: -; Participants: Khallaf, Maram E.; Samir Kamal, Jackline (2021)

To evaluate the antibacterial effect of diode laser and photodynamic therapy using methylene blue dye when used alone or in combination with Moringa oleifera extract on root canal microbes. A total of 50 single root canals with single straight canals were prepared with ProTaper files, sterilized in an autoclave device, contaminated with root canal microbes (Enterococcus faecalis and Candidia albicans) and placed in incubator for 21 days. They were then randomly divided into 6 groups. Laser group: (10 root canals) were subjected to laser only. Moringa group: (10 root canals) were irrigated using plant extract only (Moringa). PDT group: (10 root canals) were irrigated using Moringa and ...

Evaluation and comparison between the bactericidal effect of diode laser irradiation (970 nm) and silver nanoparticles on Enterococcus faecalis bacterial strain (an in vitro study)

Authors: Sadony, Doaa M.; Advisor: -; Participants: Montasser, Karim (2019)

There was a significant difference between the treated groups, in which the laser group showed a high bactericidal effect than the other groups at the time of radiation 40 s, without damaging the tooth structure or periodontal ligament. Diode laser with proper parameters is used as an adjunctive endodontic disinfection modality due to its antibacterial effect with a temperature tolerated by periodontal tissues with safety limit.