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Showing 2 results for Nazemi Salman
Knowledge and Practice of General Dentists Regarding the COVID-19 in Zanjan, Iran
Bahareh Nazemi Salman, Leila Eftekhar, Shahram Arsang Jang, Seyede Solmaz Taheri, Fatemeh Jafari,
Volume 8, Issue 2 (4-2023)
Abstract
 
Background and Aim: Severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2) that caused the coronavirus disease-2019 (COVID-19) pandemic is transmitted through close contact via respiratory droplets when an infected patient sneezes, coughs, or talks. Due to close contact with patients, dentists are at higher risk of COVID-19. The aim of this study was to evaluate the knowledge and practice of general dentists in Zanjan regarding the COVID-19.  
Materials and Methods: This cross-sectional study was conducted on 107 general dentists working in Zanjan city in September 2021, simultaneous with the fifth wave of the COVID-19, who were selected by census sampling. A researcher-designed questionnaire was used to assess the knowledge and practice after assessing its reliability and validity. The effect of age, gender, work experience, and place of work on knowledge and practice of dentists was analyzed by one-way ANOVA, independent sample t-test, and Pearson’s correlation test (alpha=0.05).
Results: Of all, 89 questionnaires were returned. The mean age of the participants was 35.9 years, and 77.5% of dentists acquired their knowledge about COVID-19 pandemic through the social networks. The mean knowledge and practice scores of dentists were 70.73±10.67 and 58.51±12.81, respectively (out of 100). Dentists with 5 to 15 years of work experience had the highest level of knowledge (P=0.018). The practice score significantly increased with age (P=0.003). Also, dentists with more than 15 years of work experience acquired higher practice scores (P=0.000)
Conclusion: Dentists' knowledge and practice regarding COVID-19 and its treatment was moderate to high (optimal). However, their knowledge and practice were still far from the ideal level, indicating the need for educational planning to enhance their knowledge and improve their practice to deal with COVID-19.

Effect of Silver Nanoparticles Green Synthesized by Using the Quercus Infectoria Extract on Some Dental Pathogens
Bahareh Nazemi Salman , Negin Aliyari , Alireza Yazdinezhad, Seyede Solmaz Taheri, Mahtab Mohammadi Qeydari ,
Volume 10, Issue 1 (3-2025)
Abstract
Background and Aim: Green synthesis through using plants such as Quercus infectoria (Q. infectoria) is a relatively novel technique for synthesis of nanoparticles. This study aimed to assess the effect of silver nanoparticles (SNPs) green synthesized by using the Q. infectoria extract on some dental pathogens.
Materials and Methods: In this in vitro study, SNPs were synthesized by using the Q. infectoria extract and silver nitrate. Formation of SNPs was confirmed by UV-visible spectrophotometry. Presence/absence and proliferation of Streptococcus mutans (S. mutans), Streptococcus salivarius (S. salivarius), Streptococcus sobrinus (S. sobrinus), Lactobacillus acidophilus (L. acidophilus), and Enterococcus faecalis (E. faecalis) were evaluated by observing the tube turbidity following their culture in presence of SNPs. Also, different concentrations of Q. infectoria extract (1, ½, ¼, 1/8, and 1/16) were added to 5 bacterial plates, and the diameter of the growth inhibition zones was measured by a ruler. The results were reported descriptively. 
Results: The minimum inhibitory concentration (MIC) of SNPs against L. acidophilus was lower than that for other pathogens. The highest antibacterial effect was observed in concentration of 1 against L. acidophilus, and ½ on S. salivarius and L. acidophilus. Also, L. acidophilus was the most sensitive and E. faecalis was the least sensitive microorganism to ¼, 1/8, and 1/16 concentrations. The 1/16 concentration caused no growth inhibition zone in E. faecalis plate.
Conclusion: Green synthesized SNPs had acceptable antibacterial activity against the tested microorganisms, and may be used as an antibacterial agent against these pathogens.
 

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