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Av. odontoestomatol ; 33(2): 77-83, mar.-abr. 2017. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-162076

RESUMO

Introducción: Las tinciones cromógenas o 'Black Stain' (BS) se han asociado a una baja experiencia de caries y un menor recuento de bacterias cariogénicas. El objetivo es determinar si existe diferencia en el número de pacientes que presenten un alto recuento de S. mutans (>105 UFC/ml saliva) entre niños con BS y sin ellas. Material y métodos: Estudio observacional analítico de corte transversal. Se incluyeron 158 escolares entre 6 y 12 años de establecimientos educacionales de la ciudad de Valdivia, Chile. Luego de un examen clínico se determinó la prevalencia de individuos con BS y se conformó un grupo con ausencia de tinciones para comparar el recuento de S. mutans. Se calculó la proporción del número de pacientes con valores >105 UFC/ ml en ambos grupos para establecer los sujetos con alto riesgo cariogénico, evaluando si las diferencias fueron significativas (p<0,05) mediante el test exacto de Fisher. Resultados: Se diagnosticó BS en 15 niños (6 hombres y 9 mujeres), estimando una prevalencia de 9,5% del total de examinados. De esta forma, los grupos de estudio se conformaron por 15 niños con BS y 30 sin la tinción. No hubo diferencia estadísticamente significativa (p=0,538) en la proporción de niños con recuento >105 UFC/ml de S. mutans entre los grupos. Discusión: La presencia de BS en pacientes de 6 a 12 años no se asocia a mayor o menor riesgo cariogénico (AU)


Introduction: Chromogenic staining or 'Black Stain'(BS) has been associated with a low caries frequency and less cariogenic bacteria count. The aim of the study was to determine the difference in the number of patients who have a high count of S. mutans (>105 CFU/ml saliva) among children with BS and without them. Material and methods: Analytical observational cross-sectional study. In this study were included 158 children between 6 and 12 years old, from educational establishments in the city of Valdivia, Chile. After clinical muexamination, the prevalence of individuals with BS was determined and a group was formed with no stains to compare the count of S. mutans. We calculate the ratio of patients with values> 105 CFU/ml in the two groups to identify the patients with high cariogenic risk. Statistical differences were evaluated by Fisher’s test (p <0.05). Results: BS was diagnosed in 15 children (6 men and 9 women), estimating a prevalence of 9.5% of all examined. Thus, the groups studied were formed by 15 children with BS and 30 without staining. There was no statistically significant difference (p=0.538) in the proportion of children with >105 CFU/ml of S. mutans between groups. Discussion: The presence of BS in patients aged 6 to 12 years is not associated with cariogenic risk (AU)


Assuntos
Humanos , Criança , Saliva/microbiologia , Streptococcus mutans/isolamento & purificação , Cárie Dentária/epidemiologia , Infecções Estreptocócicas/epidemiologia , Compostos Cromogênicos , Cariogênicos/análise , Contagem de Colônia Microbiana/métodos , Microbiota
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