RESUMEN
The aim of this study was to describe the caries prevalence of 14-yr-old children living in two fluoridated communities, a non-fluoridated community, and a community that discontinued fluoridation 5 yr before the children were examined and to relate the caries prevalence to socio-economic status. Clinical examinations were completed on 413 children of whom 227 had been continuously resident in their towns. Children living in the fluoridated communities had significantly lower mean DMFT and DMFS scores than those in the non-fluoridated town. The children from the town that had discontinued fluoridation 5 yr earlier had mean DMFT and DMFS scores that occupied an intermediate position. The differences were greater when only the continuous residents were examined. There were significant differences in the mean DMFT and DMFS when comparing socioeconomic status and fluoridation of the water supply. No interaction effect was demonstrated between these two factors.
Asunto(s)
Caries Dental/epidemiología , Fluoruración , Clase Social , Adolescente , Análisis de Varianza , Distribución de Chi-Cuadrado , Índice CPO , Caries Dental/prevención & control , Femenino , Humanos , Modelos Lineales , Masculino , Nativos de Hawái y Otras Islas del Pacífico , Nueva Zelanda/epidemiología , Prevalencia , Factores de Tiempo , Población BlancaRESUMEN
This study investigated the prevalence of alveolar bone loss (ABL) in 5-year-old New Zealand children. The relationship of bone loss with the prevalence of caries, socio-economic status and ethnic origin was examined. Standardized bite-wing radiographs from 317 children were used to examine the alveolar bone in 1784 sites. Questionable bone loss (QBL) was evident in 8.5% of the children and definite bone loss (DBL) in 2.1%. The children with suitable radiographs had a mean dmft of 1.8 +/- 2.9 and mean dmfs of 2.7 +/- 5.0. When the children were divided into 3 groups having no bone loss (NBL), QBL only or DBL, analysis of variance on the logarithmic transformation of both the dmft and dmfs scores showed significant differences among the groups. Post hoc tests showed that the means for the DBL group were significantly different from those of the other 2 groups for both dmft and dmfs scores. Logistic regression analysis indicated that the odds ratio for having definite alveolar bone loss was slightly increased in children with a dmft of > or = 9.
Asunto(s)
Pérdida de Hueso Alveolar/epidemiología , Caries Dental/epidemiología , Etnicidad , Clase Social , Pérdida de Hueso Alveolar/diagnóstico por imagen , Preescolar , Índice CPO , Femenino , Fluoruración , Fluoruros/análisis , Humanos , Masculino , Nueva Zelanda/epidemiología , Prevalencia , Radiografía de Mordida Lateral , Reproducibilidad de los Resultados , Salud Urbana/estadística & datos numéricos , Abastecimiento de Agua/análisisRESUMEN
The prevalence of caries in 5-year-old children living in fluoridated and non-fluoridated communities was investigated. Clinical examinations were completed on 342 children, of whom 247 had been continuously resident in their towns. Children living in fluoridated communities had significantly lower mean dmft and dmfs than children living in non-fluoridated communities. There was a marked social gradient in the non-fluoridated communities, which was not observed in the children from the fluoridated communities.