ABSTRACT
Dental caries is one of the most prevalent infectious diseases and although of multifactorial origin, Streptococcus mutans is considered the chief pathogen in its development. Fluoride is one of the most effective agents used for the reduction of dental caries apart from oral hygiene maintenance. AIMS: The aim of this study was to estimate the counts of Streptococcus mutans and to evaluate the effect of Fluor Protector fluoride varnish on these counts in the plaque of caries-free children using Dentocult SM Strip Mutans. MATERIALS AND METHODS: Thirty caries-free subjects were selected for the study based on the information obtained from a questionnaire and were randomly assigned to the control group consisting of ten subjects and the study group consisting of twenty subjects. Plaque samples were collected on the strips from the Dentocult SM kit and after incubation, the presence of Streptococcus mutans was evaluated using the manufacturer's chart. The study group was subjected to a Fluor Protector fluoride varnish application following which the samples were collected again after 24 hours. RESULTS: The average Streptococcus mutans counts in the primary dentition of caries-free children before and after the application of Fluor Protector fluoride varnish were 10(4)-10(5) colony forming units (CFU)/ml and <10(4) CFU/ml respectively. CONCLUSION: The results showed that the study group had a statistically significant reduction in the plaque Streptococcus mutans counts than the control group.
Subject(s)
Beverages , Cariostatic Agents/administration & dosage , Child, Preschool , Colony Count, Microbial , Dental Plaque/microbiology , Dietary Carbohydrates/administration & dosage , Drug Combinations , Fluorides, Topical/administration & dosage , Feeding Behavior , Humans , Incisor/microbiology , Molar/microbiology , Polyurethanes/administration & dosage , Reagent Strips/diagnosis , Research Design , Silanes/administration & dosage , Streptococcus mutans/drug effects , Tooth, Deciduous/microbiology , Toothbrushing , Toothpastes/therapeutic useABSTRACT
Este estudo avaliou a efetividade do silano associado ao ataque ácido com ácido fosfórico a 37 por cento e ácido hidrofluorídrico a 9,6 por cento em reparos de resina composta em motores decíduos ®in vitro¼ e ®in vivo¼. Após um ano de avaliaçäo clínica e radiográfica, pudemos observar que a silanizaçäo da resina antiga resultou em melhores reparos, com linha de uniäo (uniäo interfacial) mais satisfatória clinicamente e o uso do ácido fosfórico a 37 por cento somente mostrou um grau de infiltraçäo muito baixo levando à melhores resultados quando observados tanto na técnica ®in vitro¼ quanto na técnica ®in vivo¼