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Dental caries and first permanent molar pit and fissure morphology in 7-to 8-year-old children in Wuhan,China

International Journal of oral Science 2012年第3期4卷 157-160页

作者： Jin-Dong Wang Xi Chen Jo Frencken Min-Quan Du Zhi Chen Key Laboratory for oral Biomedicine of Ministry of Education School and Hospital of StomatologyWuhan UniversityWuhanChina Shenzhen Maternal and Children's Hospital ShenzhenChina Department of Global oral Health Radboud University Nijmegen Medical CentreCollege of Dental SciencesNijmegenThe Netherlands

To obtain the caries experience and, plaque accumulation severity and pit and fissure morphology in first permanent molars in 7-8 children in Wuhan, as a reasonable prediction of caries risk and preventive attention in the future, a convenient sample of five primary schools in the vicinity of the Wuhan University School and Hospital of Stomatology was drawn. Two calibrated examiners orally examined all present grade 2 children in the classroom, using standard caries plaque and tooth morphology criteria. Dental caries was scored at enamel （D2） and dentine （D3） for tooth and surface level. Independent variables were age, gender and school. Data analysis used analysis of variance and t-test. The sample comprised 1 043 7- and 8-year-olds. The prevalence of dental caries in permanent dentition was 8.7% and in primary dentition, 68.7%. Mean Decayed, Missing, Filled Teeth/S （DMFT/S） scores were 0.1 1 and . 14, respectively. Mean dmft/s scores were 2.8 and 5.0. The d-component constituted 75% of the d3mft index, while enamel carious lesions constituted 36% of the total number of carious lesions （d2,3-component）. Prevalence of medium and deep pits and fissures was 84.6%. Prevalence of medium and severe plaque accumulation was 67.4%. Prevalence of dental caries in the deciduous and permanent dentitions of 7- to 8-year-old children was high. Deed oits and fissures in high caries risk children should be sealed_

关键词： dental caries oral epidemiology plaque tooth morphology

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