Prevalence of tooth erosion of 5-year-old and 12-year-old children in Xuzhou city / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To investigate the prevalence of tooth erosion of Xuzhou city's children.</p><p><b>METHODS</b>The stratified, cluster and random sampling methods were performed. The prevalence of tooth erosion of 1,219 5-year-old children and 786 12-year-old children in Xuzhou city were examined by one qualified dentist. The results of clinical examination were recorded by schedule table. The risk factors of tooth erosion were investigated by questionnaire and analyzed by Logistic regression model.</p><p><b>RESULTS</b>In 5-year-old children group, the prevalence of tooth erosion was 10.91%. In 12-year-old children group, the prevalence of tooth erosion was 22.14%. The ranking of tooth erosion were mostly class 1 and class 2. The tooth erosions of class 3 and above were rare. The odds rations for tooth erosion were: Acidic fruits, 1.120; acidophilous milk, 1.062; sport drinks, 1.159; carbonated drinks, 1.151; fruit juice, 1.187; drinking acidic drinks or acidophilous milk before sleeping, 6.102; gastroesophageal reflux disease, 2.311; vitamin C, 1.565; supply chalybeate, 1.598.</p><p><b>CONCLUSION</b>The prevalence of tooth erosions in Xuzhou is extensive. Oral health education and drink and food guidance should be strengthened. The amount and frequency of intake of acidic food and drink should be reduced to promote oral health.</p>

Prevalence of deciduous tooth caries in 780 children aged 5 years / 华西口腔医学杂志

<p><b>OBJECTIVE</b>The aim of this survey was to obtain some information about the prevalence of deciduous tooth caries of 5-year-old children in Sichuan province.</p><p><b>METHODS</b>Based on World Health Organization and national oral health survey standards, dental caries prevalence and treatment needs were investigated randomly in selected children of Sichuan province in 2005. And the differences between this survey result and the dental caries prevalence of 5-year-old children of Sichuan province in 1995 were compared.</p><p><b>RESULTS</b>The prevalence rate of deciduous tooth caries of 5-year-old children in Sichuan province was 58.72%. The mean number of dmft of 5-year-old was 2.77. The filling rate was only 2.32%. The prevalence rate and mean dmft of deciduous tooth caries showed no significant difference between different area and gender; but the children came from city showed significant higher filling rate than those from countryside, so did the female children compared with the male children. Compared these results with the dental caries of 5-year-old children in Sichuan province in 1995, the prevalence rate and mean dmft of deciduous tooth caries in Sichuan province in 2005 had no significant difference, but the filling rate decreased significantly.</p><p><b>CONCLUSION</b>The deciduous tooth caries prevalence rate of 5-year-old children is still relatively high in Sichuan province; there remains a proportion of active untreated decays. The dental health care education to the parents and teachers should be emphasized. In order to get the earlier diagnosis and treatment, regular examination and prevention method should be conducted.</p>