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目的了解青铜峡市饮水型地方性氟中毒病区改水后儿童氟斑牙及成人氟骨症的患病情况。方法选择已改水的高氟重病区叶盛镇叶盛5队(改水区1)、高氟轻病区大坝镇新桥5队(改水区2)和未改水的高氟轻病区大坝镇滑石沟5队(未改水区)。于2011年3—4月,对全部670名儿童进行氟斑牙诊断并对所有25岁以上成人共1400名进行氟骨症诊断。结果两个改水区水氟浓度分别为(0.24±0.05)、(0.32±0.07)mg/L,均合格;未改水区水氟浓度为(1.03±0.19)mg/L。改水地区儿童氟斑牙患病率和成人氟骨症患病率均低于未改水地区,差异有统计学意义(P<0.05)。结论青铜峡市地方性氟中毒病区经改水降氟后,饮用水符合卫生要求,但氟斑牙及氟骨症尚存在一定程度的流行。
Objective To understand the prevalence of dental fluorosis and adult skeletal fluorosis in children with drinking-water endemic fluorosis in Qingtongxia City. Methods We selected 5 teams (Yehsun 5) (Yehsan 5), Yehsan 5 (Yehsan 2) in Dafu Township with high fluoride and light illnesses, Ward Dam town ditch 5 teams (no water area). From March to April 2011, all 670 children were diagnosed with dental fluorosis and 1,400 adults over the age of 25 were diagnosed with fluorosis. Results The water fluoride concentrations in the two water diversion areas were (0.24 ± 0.05) and (0.32 ± 0.07) mg / L respectively, respectively. All were qualified. The water fluoride concentration in the water diversion area was (1.03 ± 0.19) mg / L. The prevalence of dental fluorosis and adult skeletal fluorosis in water-diverting areas were lower than those in areas without water diversion (P <0.05). Conclusion After drinking water is reduced to fluoride in endemic fluorosis area of Qingtongxia City, drinking water meets the hygienic requirements, but there is still a certain degree of prevalence of dental fluorosis and skeletal fluorosis.