Department of Community Dental Health, Faculty of Dental Sciences, University of Peradeniya, Sri Lanka.
Community Dent Health. 2022 Mar 1;39(1):54-58. doi: 10.1922/CDH_00244Jinadasa05.
To determine the prevalence, severity, and intraoral distribution of dental fluorosis among 15-year-old school children in Kurunegala district of the North-Western Province, Sri Lanka.
A cross-sectional study was conducted among 15-year-old school children residing in Kurunegala district since birth. One thousand and forty participants from 42 schools were selected using two stage cluster sampling method. A single calibrated dentist examined all participants for dental fluorosis using Thylstrup and Ferjeskov index. Water samples from the drinking water source of participants were analyzed for their fluoride content.
The prevalence of dental fluorosis was 52% and 42% when TF score ⟩ 0 and TF score ⟩1 were considered as cut-offs for dental fluorosis respectively. Of those with dental fluorosis, a majority (20.9%) had a TF score of 2. Only 0.5% had a TF score of 6 which was the highest score observed for any participant. With regards to the intra-oral distribution of dental fluorosis, the premolars were the most affected teeth and the least affected were the central incisors. The fluoride levels in the drinking water source ranged between 0.0-1.9 mg/L and the prevalence of dental fluorosis increased with the increase in the fluoride level in drinking water source.
The prevalence of dental fluorosis was high and it increased with the increase in the fluoride content in the drinking water source.
在斯里兰卡西北部库鲁内格勒地区，确定 15 岁在校儿童的氟斑牙患病率、严重程度和口腔内分布情况。
这是一项在库鲁内格勒地区出生并居住的 15 岁在校儿童中开展的横断面研究。采用两阶段整群抽样方法，从 42 所学校中选取了 1040 名参与者。由一名经过校准的牙医使用 Thylstrup 和 Ferjeskov 指数对所有参与者的氟斑牙进行检查。对参与者饮用水源的水样进行氟含量分析。
当 TF 评分 ⟩0 和 TF 评分 ⟩1 分别作为氟斑牙的截断值时，氟斑牙的患病率分别为 52%和 42%。在氟斑牙患者中，大多数（20.9%）的 TF 评分为 2。只有 0.5%的 TF 评分为 6，这是观察到的任何参与者的最高评分。关于氟斑牙的口腔内分布情况，前磨牙是受影响最严重的牙齿，而中切牙是受影响最小的牙齿。饮用水源中的氟化物含量范围在 0.0-1.9mg/L 之间，氟斑牙的患病率随着饮用水源中氟化物含量的增加而增加。
氟斑牙的患病率较高，且随着饮用水源中氟含量的增加而增加。
