Objetivo: La finalidad del presente estudio in vitro fue determinar si la adherencia de Streptococcus mutans a la superficie dentaria se ve incrementada por el uso de agentes blanqueadores sobre dichas piezas. Material y método: Se utilizaron 30 primeras premolares superiores sin signos de fractura ni lesiones cariosas, las cuales se agruparon en tres grupos: piezas tratadas con peróxido de carbamida al 22% durante 4 horas diarias por 9 días, piezas tratadas con peróxido de hidrógeno al 7,5% durante 1 hora diaria por 9 días (siguiendo las indicaciones del fabricante) y grupo control; piezas que no fueron tratadas con ningún agente blanqueador. Posteriormente las piezas dentarias fueron colocadas con las caras vestibulares sobre placas de cultivo de Streptococcus mutans y se dejaron en exposición por 24 horas. El número de colonias adheridas a las superficies dentarias fue dado m...

Objective: To determine the antibacterial, in vitro activity of ethanolic extract of Caesalpinia spinosa (Tara), on the oral biofilm bacteria cultures. Material and methods: An in vitro experimental study was carried out, in which the antibacterial activity of an ethanolic extract of C. spinosa and the controls (chlorhexidine 0.12%, oral antiseptic (OA), ethanol and distilled water), were compared to strain cultures strains of Streptococcus mutans (ATCC® 25175), Streptococcus sanguinis (ATCC® 10556), Enterococcus faecalis (ATCC® 29212), Staphylococcus aureus (ATCC® 6538) and Porphyromonas gingivalis (ATCC® 30277). The agar diffusion method with 6 mm diameter wells was used, with the experimental group and controls Results: It was evident that the average of the inhibition zone formed by the application of the ethanolic extract of C. spinosa on S. aureus was much larger than the one ...

Objective: To evaluate the antimicrobial activity, through the agar diffusion method with wells, of camu camu (CC) against oral microorganisms. Methods: Strains of S. aureus, S. mutans, C. albicans and P. gingivalis were inoculated in Petri dishes. Ethanolic extracts (EEs) of peel, pulp and CC seed and controls (0.12% chlorhexidine, oral antiseptic, 70° alcohol and distilled water) were loaded into 6 mm diameter wells. All plates were incubated for 24-48 h and 11 days (P. gingivalis) at 35°C and the antimicrobial activity was determined by the formation of a zone of microbial growth inhibition (ZMGI), around the wells and measured by a Vernier caliper, by a researcher, calibrated interexaminer. The average of the different ZMGI areas (mm) was determined. The experiment was executed between 3 and 14 replicas. Descriptive and inferential statistics were applied (p<0.05). Results: Seed...