Prevention and control of brick-tea type fluorosis--a 3-year observation in Dangxiong, Tibet.
To evaluate the effects of preventing and controlling brick-tea type fluorosis, we carried out a 3-year field observation and assayed the total daily fluoride intake, urinary and serum fluoride level, and dental fluorosis prevalence and index in a boarding school in Dangxiong, Tibet, in students aged 8-15. We replaced the traditional brick tea with low-fluoride brick tea (LFBT). Reduction in the traditional brick-tea consumption decreased the total daily fluoride intake among the children, which still remained within the level of chronic intoxication but at a safe level. The study suggests that the LFBT is effective in the prevention and control of endemics of brick tea type fluorosis, although further improvement of the LFBT is required.
Jin
Cao
C
Tea and Health Laboratory, Xiangya School of Medicine, Central-South University, Tibet, China. caojin@public.cs.hn.cn
Yan
Zhao
Z
Jian-Wei
Liu
L
Ruoden
Xirao
X
Sangbu
Danzeng
D
Zeguo
Zhouma
Suonan
S
D000293:Adolescent; D002648:Child; D004032:Diet; D005260:Female; D005459:Fluorides / Q000009:adverse effects* / Q000032:analysis; D009050:Fluorosis, Dental / Q000209:etiology / Q000517:prevention & control*; D006801:Humans; D008297:Male; D013662:Tea / Q000009:adverse effects* / Q000737:chemistry; D018609:Tibet
D013662:Tea; D005459:Fluorides