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竹溪县庆永村七组,有50户,199人,位于该县的西南部,海拔500米,丘陵地貌,砂砾土质。同庆沟石煤矿在组内。村民用石煤做饭、取暖有200多年的历史。饮用浅层井水。以大米和玉米为主食。该组生产落后,村民生活水平低。人群患病调查:该组调查193人,氟斑牙患者170人,患病率88.08%。其中,白垩型占53.97%;着色型占44.44%;缺损型占1.59%。临床表现:全组村民中关节疼痛占
Qingxiu County, Chishui County, seven groups, 50 households, 199 people, located in the county’s southwest, 500 meters above sea level, hilly landforms, gritty soil. Tongqing ditch mine in the group. Villagers use stone coal for cooking, heating for more than 200 years of history. Drink shallow well water. With rice and corn as the staple food. The group lagged behind and villagers living standards were low. Survey of population illness: The group survey of 193 people, 170 dental fluorosis patients, the prevalence rate of 88.08%. Among them, chalk accounted for 53.97%; coloring accounted for 44.44%; defect accounted for 1.59%. Clinical manifestations: All the villagers in the joint pain accounted for