Del Carmen Aguilar-Díaz Fatima, Javier de la Fuente-Hernández, Aline Cintra-Viveiro Cristina
National Graduate School, Unit León, National Autonomous University of Mexico, Mexico City, Mexico.
J Int Soc Prev Community Dent. 2016 Nov-Dec;6(6):517-522. doi: 10.4103/2231-0762.195510.
The aim of this study was to assess urine fluoride concentration, nutritional status, and dental fluorosis in adolescent students living in the rural areas of Guanajuato, Mexico.
A cross-sectional study was conducted including participants aged 11-20 years. The presence and severity of dental fluorosis was registered according to the Thylstrup and Fejerskov index (TFI) criteria. Anthropometric measures were also recorded. Urine sample of the first morning spot was recollected to assess urine fluoride concentration by using the potentiometric method with an ion-selective electrode. Water samples were also recollected and analyzed. Bivariate tests were performed to compare urine fluoride concentration according to different variables such as sex, body mass index, and TFI. Nonparametric tests were used. A logistic regression model was performed (SPSS® 21.0).
This study included 307 participants with a mean age of 15.6 ± 1.6; 62.5% of the participants showed normal weight. A total of 91.9% of the participants had dental fluorosis, and 61.6% had TFI > 4. Mean fluoride content in urine ranged between 0.5 and 6.65 mg/L, with a mean of 1.27 ± 1.2 mg/L. Underweight children showed greater urine fluoride concentration. The increment of urine fluoride was a related (OR = 1.40) to having severe dental fluorosis.
Most of the studied population had moderate or severe dental fluorosis. Urine fluoride concentration was related to fluorosis severity and nutritional status. Underweight children showed greater urine fluoride concentration as well as severe dental fluorosis.
本研究旨在评估生活在墨西哥瓜纳华托州农村地区的青少年学生的尿氟浓度、营养状况和氟斑牙情况。
开展了一项横断面研究，纳入年龄在11至20岁的参与者。根据蒂尔斯楚普和费耶斯科夫指数（TFI）标准记录氟斑牙的存在情况和严重程度。还记录了人体测量指标。收集晨尿样本，采用离子选择性电极电位法评估尿氟浓度。同时收集并分析水样。进行双变量检验以比较不同变量（如性别、体重指数和TFI）下的尿氟浓度。使用非参数检验。进行了逻辑回归模型分析（SPSS® 21.0）。
本研究包括307名参与者，平均年龄为15.6 ± 1.6岁；62.5%的参与者体重正常。共有91.9%的参与者患有氟斑牙，61.6%的参与者TFI > 4。尿氟平均含量在0.5至6.65毫克/升之间，平均为1.27 ± 1.2毫克/升。体重过轻的儿童尿氟浓度更高。尿氟增加与患有严重氟斑牙相关（OR = 1.40）。
大多数研究对象患有中度或重度氟斑牙。尿氟浓度与氟斑牙严重程度和营养状况相关。体重过轻的儿童尿氟浓度更高，氟斑牙也更严重。
