Department of Public Health Dentistry, People's Dental Academy, People's Campus, Bhanpur, Madhya Pradesh, India.
Indian J Public Health. 2012 Apr-Jun;56(2):122-8. doi: 10.4103/0019-557X.99902.
The published literature on the prevalence and severity of dental caries and dental fluorosis among school going children in Nalgonda district - An Endemic Fluoride belt was lacking .
To assess the prevalence and severity of dental fluorosis and dental caries among 12 and 15 years old children in relation to fluoride concentration in drinking water .
It was a cross-sectional study, done in Nalgonda district of Andhra Pradesh, India (endemic fluoride belt) .
5 of the 59 mandals in the district of Nalgonda were selected by simple random sampling. Then, 3 schools from each of these selected mandals were chosen at random. All the eligible 6 th and 9 th standard children were considered for final analysis. The demographic and other relevant information was collected by 3 trained and calibrated dentists, using a structured questionnaire. Dental caries were recorded using dentition status and treatment needs and fluorosis were recorded by Dean's fluorosis index. The statistical analysis was done using SPSS version 16.
The prevalence of dental caries among children was 56.3% with the highest in below optimal fluoride area (71.3%) and lowest in optimal fluoride area (24.3%). The prevalence of dental fluorosis was 71.5%. The prevalence was 39.7% in below optimal fluoride area and 100% in high and very fluoride areas. The prevalence and severity of fluorosis increased with increasing fluoride concentration. The caries experience was more among boys than girls.
There was a negative correlation between dental caries and fluoride concentration for the entire study population. However, in high fluoride areas, there was a positive correlation between fluoride concentration and dental caries. Water defluoridation on an urgent basis is a priority here than water fluoridation, because the prevalence and severity of dental flurorosis is very high.
在纳尔贡达地区（一个地方性氟中毒带），有关学龄儿童龋齿和氟斑牙的流行率和严重程度的已发表文献缺乏。
评估与饮用水中氟浓度相关的 12 至 15 岁儿童的氟斑牙和龋齿的流行率和严重程度。
这是一项在印度安得拉邦纳尔贡达区（地方性氟中毒带）进行的横断面研究。
通过简单随机抽样选择了该地区的 59 个 mandals 中的 5 个。然后，从这些选定的 mandals 中每个 mandal 随机选择 3 所学校。所有符合条件的 6 年级和 9 年级的孩子都被纳入最终分析。3 名经过培训和校准的牙医使用结构化问卷收集人口统计学和其他相关信息。使用龋齿状况和治疗需求记录龋齿，使用 Dean's 氟斑牙指数记录氟斑牙。使用 SPSS 版本 16 进行统计分析。
儿童龋齿的流行率为 56.3%，在氟不足地区最高（71.3%），在氟充足地区最低（24.3%）。氟斑牙的流行率为 71.5%。在氟不足地区的患病率为 39.7%，在高氟和极高氟地区的患病率为 100%。氟斑牙的患病率和严重程度随着氟浓度的增加而增加。在男孩中，龋齿的发生率高于女孩。
对于整个研究人群，龋齿与氟浓度之间存在负相关。然而，在高氟地区，氟浓度与龋齿之间存在正相关。因此，这里当务之急是对水进行脱氟，而不是氟化，因为氟斑牙的流行率和严重程度非常高。
