Antibacterial Effect of Bitter and Sweet Almond Hydroalcoholic Extracts on Streptococcus mutans, Lactobacillus acidophilus, Enterococcus faecalis, Streptococcus salivarius, and Streptococcus sobrinus

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Sadri Leyli; Taghian Mehdi; Rahimian Aboutaleb; Mollaei Melika; Hosseinnataj Abolfazl; Goli Hamid Reza

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Journal Paper

Paper Information

Journal: REGENERATION, RECONSTRUCTION & RESTORATION Year:2024 | Volume:9 | Issue:1 Page(s): 1-6

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Title

Antibacterial Effect of Bitter and Sweet Almond Hydroalcoholic Extracts on Streptococcus mutans, Lactobacillus acidophilus, Enterococcus faecalis, Streptococcus salivarius, and Streptococcus sobrinus

Author(s)

Keywords

itter almond

Sweet almond

Antibacterial effect

Streptococcus

Enterococcus

Lactobacillus

Abstract

Background and objectives: The use of antibacterial substances is necessary to reduce pathogens without damaging the normal flora of the oral cavity. Therefore, this study aimed to investigate the antibacterial effect of bitter and sweet almond extracts on Streptococcus mutans, Lactobacillus acidophilus, Enterococcus faecalis, Streptococcus salivarius and Streptococcus sobrinus. Materials and methods: In this experimental study, laboratory samples were analyzed in three groups as follows: bitter almond extract (Prunus Amygdalus amarus) group, sweet almond extract (Prunus Amygdalus dulcis) group and 0. 2% chlorhexidine. To determine the antibacterial effects of the extracts on the aforementioned bacteria, the disk agar diffusion method was performed according to the CLSI manufacturers. Data were collected and analyzed using SPSS26 software as well as Kruskal-Wallis and Mann-Whitney tests. Results: Findings suggested that Chlorhexidine had the greatest antibacterial effect against the tested bacteria. Bitter and sweet almond extract had no effect on E. faecalis and despite the effect on other bacteria,this effect was not statistically significant (P > 0. 05). A 12. 33 mm and 10. 6 mm inhibition zone diameter of the bitter and sweet almond extracts was observed against S. sobrinus, respectively. Conclusion: The antibacterial effect of chlorhexidine on the tested oral bacteria was much higher than the bitter and sweet almond extracts. Also, the bitter and sweet almond extracts had no effect on E. faecalis. However, the bitter almond was more effective than the sweet almond.

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