Abstract
Objetive: To assess the antibacterial effect of plant extracts of popular use on bacteria related to the development of caries and endodontic infections. Methods: Experimental study conducted at the University of the Extreme South of Santa Catarina in 2015 in which dyes of Artemisia absinthium, Laurus nobilis, Bidens pilosa, Achillea millefolium L and Foeniculum vulgare at hydro-alcoholic concentrations of 5%, 10%, 15% and 20% in Mueller Hinton agar growth-medium had their antibacterial activity against strains of S. mutans and E. faecalis measured. The solid medium diffusion method was used and the inhibitory activity was analyzed according to the presence and size of inhibition halos – control and chlorhexidine 0.12%. Significance level was set at α=0.05. Results: There was no inhibition on the strains of E. faecalis in any of the dyes; however, it was observed an inhibitory effect of Artemisia absinthium, Laurus nobilis and Bidens pilosa dyes on the strains of S. mutans at the concentrations tested. Conclusion: The dyes of plants of popular use assessed showed no antimicrobial effects on E. faecalis, which causes endodontic infections; however, three of them presented inhibitory effects against S. mutans, which is mainly responsible for caries.
Highlights
Objetive: To assess the antibacterial effect of plant extracts of popular use on bacteria related to the development of caries and endodontic infections
O objetivo do estudo foi avaliar o efeito antibacteriano de extratos de plantas de uso popular sobre bactérias relacionadas ao desenvolvimento da cárie e infecções endodônticas
Aplicou-se o teste de Kruskal Wallis para comparar o tamanho do halo de inibição em relação às tinturas de Artemisia absinthium, Laurus nobilis, Bidens pilosa, Achillea millefolium L. e Foeniculum vulgare em cada concentração (5%, 10%, 15% e 20%), sucedido pelo teste post hoc de Dunn no caso de significância estatística
Summary
Objetivo: Avaliar o efeito antibacteriano de extratos de plantas de uso popular sobre bactérias relacionadas ao desenvolvimento da cárie e infecções endodônticas. Métodos: Estudo experimental realizado na Universidade do Extremo Sul Catarinense, em 2015, no qual tinturas de Artemisia absinthium, Laurus nobilis, Bidens pilosa, Achillea millefolium L e Foeniculum vulgare, nas concentrações hidroalcoólicas de 5%, 10%, 15%, 20% em meio de cultura ágar Mueller Hinton, tiveram sua ação antibacteriana mensurada contra cepas de S. mutans e E. faecalis. Resultados: Não houve inibição sobre a cepa de E. faecalis em nenhuma das tinturas, entretanto, observou-se efeito inibitório das tinturas de Artemisia absinthium, Laurus nobilis e Bidens pilosa sobre as cepas de S. mutans nas concentrações testadas. Conclusão: As tinturas de plantas de uso popular investigadas não apresentaram efeitos antimicrobianos sobre E. faecalis, causadora de infecções endodônticas, porém, três delas demonstraram efeitos inibitórios contra S. mutans, principal responsável pela cárie dentária.
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