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International journal of odontostomatology

versión On-line ISSN 0718-381X

Resumen

VACA-CHAVEZ, Maricarmen et al. Antimicrobial and Antibiofilm Effect of Hydrogel with Origanum vulgare on Culture of Streptococcus mutans and Streptococcus sobrinus. Int. J. Odontostomat. [online]. 2021, vol.15, n.1, pp.213-221. ISSN 0718-381X.  http://dx.doi.org/10.4067/S0718-381X2021000100213.

The oral cavity is an ecosystem that provides ideal conditions for the growth of bacteria, the Streptococcus genus is important for the formation of biofilms that lead to the development of dental caries, which affects the population worldwide. The world health organization encourages the use of plants thanks to its various therapeutic actions. Origanum vulgare L. (oregano), is an aromatic plant with medicinal and culinary properties. The objective of this study was to investigate the in vitro antimicrobial and antibiofilm activity of the ethanolic extract of oregano, against the growth of Streptococcus mutans and Streptococcus sobrinus ATCC. Leaves of the plant were obtained and the ethanolic extract was made by maceration. Antimicrobial activity was evaluated using the Kirby-Bauer method and compared with 2% chlorhexidine, subsequently the extract was incorporated into a hydrogel and its effect on biofilm formation was assessed by fluorescence microscopy and the main compounds were identified. present in the extratco. The study revealed that the extract presented antimicrobial effect against both strains and at 2% it showed high antimicrobial action compared to chlorhexidine at the same concentration, with average inhibition halos of 26.3 mm and 19 mm for each microorganism analyzed, (p < 0.05). Likewise, the hydrogel prepared with 2% extract significantly eliminated the preformed Streptococcus biofilm, at 24 hours of exposure, due to the presence of a variety of chemical groups, such as sterols, triterpenes, flavonoids, flavanones, flavanonol s, lactones. sesquiterpenic, tannins and coumarins. The oregano extract presented high antimicrobial action for both species, with a greater effect towards Streptococcus mutans and an interesting antibiofilm action; These results show the importance of exploring treatment alternatives of plant origin, to be considered as interesting complementary aids in dental therapy.

Palabras clave : biofilms; dental plaque; Origanum vulgare; phytotherapy; Streptococcus mutans; Streptococcus sobrinus.

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