The present invention relates to the selected bacterial strains belonging to the genus lactobacillus and their use for the treatment of bacterial biofilms and specifically for the preventive treatment intended to inhibit and / or reduce the formation of bacterial biofilms. in particular, The present invention relates to the following bacterial strains belonging to the genus lactobacillus selected from the group comprising or, alternatively, consists of lactobacillus plantarum lmc1 (dsm 32252), lactobacillus reuteri lmc3 (dsm 32253), lactobacillus paracasei lmc4 (dsm 32254), lactobacillus reuteri lmc5 (dsm 32255), lactobacillus rhamnosus lmc6 (dsm32256), lactobacillus rhamnosus lmc7 (dsm 32257), lactobacillus paracasei lmc8 (dsm32258), lactobacillus reuteri lmc9 (dsm 32259) and lactobacillus rhamnosus lmc1 (dsm32260) and their use for the treatment of bacterial biofilms and, specifically, for preventative treatment intended to inhibit and / or reduce the formation of bacterial biofilms. Besides that, the present invention relates to a pharmaceutical composition, a medical device composition or a dietary supplement composition comprising a mixture comprising or, alternatively, consists of one or more bacterial strains specified above and, optionally pharmaceutical or technological additives and / or excipients for food classification, for the treatment of bacterial biofilms and, specifically, for preventive treatment intended to inhibit and / or reduce the formation of bacterial biofilms.a presente invenção se refere às cepas bacterianas selecionadas pertencentes ao gênero lactobacillus e utilização das mesmas para o tratamento de biofilmes bacterianos e,especificamente, para o tratamento preventivo destinado a inibir e / ou reduzir a formação de biofilmes bacterianos. em particular, a presente invenção se refere às seguintes cepas bacterianas pertencentes ao gênero lactobacillus selecionadas a partir do grupo que compreen
