assessment of the antimicrobial activity of tetracycline hydrochloride diluted in three different vehicles against , , and .

Background: The development and progression of periodontal diseases is a result of the dynamic interaction of microorganisms within their habitat, and changes in this habitat generate a dysbiotic state. and are bridging microorganisms between the pioneer communities and other microorganisms responsible for periodontitis such as . Tetracycline hydrochloride (TTC-HCl) is commonly used as a coadjutant in periodontal treatment in the form of an antiseptic.

Antimicrobial potential of extracts from Stevia rebaudiana leaves against bacteria of importance in dental caries.

In recent years, the antimicrobial activity of Stevia rebaudiana Bertoni leaf extracts against a large number of microorganisms has been evaluated, but not its activity against microorganisms of importance in dental caries. The aim of this study was to evaluate the antibacterial activity of Stevia rebaudiana Bertoni leaf extracts against cariogenic bacteria. Extracts were obtained from the dried Stevia rebaudiana Bertoni leaves in hexane, methanol, ethanol, ethyl acetate and chloroform.

Genotypic profiles by AP-PCR of streptococcus mutans in caries-active and caries-free preschoolers.

Streptococcus mutans, an acidogenic and aciduric microorganism that colonizes the oral cavity is recognized as the main causal agent of dental caries. Epidemiological studies have shown a strong correlation between the number of S. mutans in the oral cavity and prevalence and incidence of caries.

Antagonistic action of indigenous Streptococcus mutans strains.

Dental caries is an infectious process which ultimately destroys the tooth. Streptococcus mutans is considered to be the main agent causing this disease. If microorganisms with antagonistic action on S.

Bacteriocins in S. mutans strains isolated from children with and without dental caries: biotypes and sensitivity to antibiotics.

The aim of this study was to determine the production of bacteriocins in the Streptococcus mutans strains isolated from children with and without dental caries. With this purpose the dmft index was determined and non-stimulated saliva was collected from 53 3- to 5-year-old children. The samples were cultured on Mitis Salivarius Bacitracin agar and incubated anaerobically for two days at 37 degrees C.

Association of salivary proteins with dental caries in a Colombian population.

Unlabelled: Saliva has an important role in maintaining normal conditions of the oral tissues. Variability in salivary composition determines its protective characteristics against dental caries. Knowledge of the molecular content of saliva in humans is important to better understand its protective properties.

Association of MSX1 with nonsyndromic cleft lip and palate in a Colombian population.

Objective: To evaluate the association between MSX1 CA polymorphism and nonsyndromic cleft lip with or without cleft palate (CL+/-P) in a group of patients from Operation Smile Colombia.

Design: Four alleles from MSX1 CA microsatellite sequence were analyzed. Polymerase chain reaction was carried out.

Changes in color and odorant compounds during oxidative aging of Pedro Ximenez sweet wines.

Pedro Ximenez sweet wines obtained following the typical criaderas and solera method for sherry wines and subjected to oxidative aging for 0, 1.3, 4.2, 7.

Identification of a novel mutation in the enamalin gene in a family with autosomal-dominant amelogenesis imperfecta.

Amelogenesis imperfecta (AI) is a heterogeneous genetic disorder that affects the formation of the dental enamel matrix. Mutations in the enamelin (ENAM) gene have been found in patients with this disorder. The objective of this research was to identify the mutations reported in exons 4, 7 and 9 of the ENAM gene in a single Colombian family with autosomal-dominant AI and to establish the phenotype.