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A epidemiological study of children's dental fluorosis in coal-burning-borne endemic fluorosis areas of three counties in Guizhou Province / 中华地方病学杂志
Chinese Journal of Endemiology ; (12): 167-169, 2014.
Article in Zh | WPRIM | ID: wpr-445101
Responsible library: WPRO
ABSTRACT
Objective To explore the changes of children's dental fluorosis before and after implementation of comprehensive prevention and control intervention in coal-burning-borne endemic fluorosis areas of Guizhou Province,and to provide a scientific basis for making corresponding prevention and control measures.Methods In 2010,according to a simple random cluster sampling method,1/5 of the villages out of 1/5 of the towns of Zunyi,Kaiyang and Longli Counties,were selected as investigation sites for inspection of dental fluorosis in 8-12 years old children and a longitudinal comparison was done with historical related dental fluorosis (year 1986 and 2000).Dental fluorosis of children was diagnosed by Dean method.Results In Zunyi,Kaiyang and Longli Counties,the detection rates of 8-12 years old children's dental fluorosis were 23.76%(202/850),15.77% (79/501) and 11.17%(42/376),respectively.The detection rates of dental fluorosis in the 8,9,10,11 and 12 years old age group of children were 11.52%(19/165),17.19%(44/256),20.20% (81/401),18.61% (75/403) and 20.72% (104/502),respectively,and there was no significant difference between groups (x2 =2.90,P > 0.05).The survey results of this investigation in the three counties in 2000 were 34.20%(7 805/22 821),39.77%(1 782/ 4 481),60.88%(2 806/4 609),and the differences were statistically significant between the results of 2010 and 2000(x2 =37.81,110.91,350.76,all P < 0.01).And compared with the results of 1986[34.29% (9 463/27 596),36.30% (2 708/7 460),35.72% (1 896/5 308)],the difference of Zunyi County was not statistically significant (x2 =0.045,P > 0.05),but for Kaiyang and Longli the differences were statistically significant(x2 =14.35,626.39,all P < 0.01).Conclusions The effect of comprehensive prevention and control intervention is very obvious.In the 3 counties,the incidence rates of 8-12 years old children's dental fluorosis are already dropped to below 30% of the control standard.Subsequent management should be carried out and the state of disease should be evaluated for organization-assessment acceptance in accordance with relevant hygiene standards in a planned way.
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Full text: 1 Index: WPRIM Type of study: Guideline Language: Zh Journal: Chinese Journal of Endemiology Year: 2014 Type: Article
Full text: 1 Index: WPRIM Type of study: Guideline Language: Zh Journal: Chinese Journal of Endemiology Year: 2014 Type: Article