Levels and proportions of free fluoride and soluble fluorine in different brands of toothpaste

Q3 Medicine 中华地方病学杂志 Pub Date : 2015-02-20 DOI:10.3760/CMA.J.ISSN.2095-4255.2015.02.007

Renhua Zhang, Chong Zheng, Zhou Yibing, L. Lei, Lin Ye

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Abstract

Objective To investigate the level and proportional relationship of free fluorine and soluble fluoride in different brands of toothpaste, and analyze possible risk factors. Methods A total of 54 samples of commercially available toothpastes of domestic, joint venture and imported in Guiyang City were collected, and the levels of free fluoride and soluble fluorine were determined, respectively, using fluorideion selective electrode method (GB 8372-2008). Results The number of the toothpaste was 32, 12, 10, respectively, in domestic, joint venture and imported. The levels of free fluorine ranged from 0.98 to 1 603.50 mg/kg, 3.22 to 617.50 mg/kg and 306.80 to 1 590.80 mg/kg, respectively, in toothpastes of domestic, joint venture and imported; the number of exceeding the standard free fluorine was 3, 0 and 1, respectively, in toothpastes of domestic, joint venture and imported; the rate of exceeding the standard free fluorine was 9.4%, 0.0% and 10.0%, respectively, in toothpastes of domestic, joint venture and imported. The levels of soluble fluorine ranged from 3.06 to 4 302.50 mg/kg, 9.02 to 1 667.30 mg/kg and 9.18 to 4 013.20 mg/kg, respectively, in toothpastes of domestic, joint venture and imported; the number of exceeding the standard soluble fluorine was 9, 2 and 3, respectively, in toothpastes of domestic, joint venture and imported; the rate of exceeding the standard soluble fluorine was 34.4%, 16.7% and 30.0%, respectively, in toothpastes of domestic, joint venture and imported. The proportion of free fluorine and soluble fluoride was: domestic 1.0∶2.7, joint venture 1.0∶ 2.7, imported 1.0 ∶ 2.5, respectively. The confidence limit (R/d) was 0.98. Conclusion The fluoride level in different brands of toothpaste has exceeded the standard, the content and proportion of soluble fluoride are obviously higher than those of free fluoride, and there is a risk on tooth damage from fluoride, and factories should strengthen quality control in adding fluoride. Key words: Toothpaste; Fluoride; Analysis

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不同品牌牙膏中游离氟和可溶性氟的含量和比例

目的调查不同品牌牙膏中游离氟和可溶性氟含量及比例关系，分析可能的危险因素。方法采集贵阳市市售国产、合资和进口牙膏54份样品，采用GB 8372-2008氟离子选择电极法分别测定游离氟和可溶性氟含量。结果国产牙膏32支，合资牙膏12支，进口牙膏10支。国产牙膏、合资牙膏和进口牙膏的游离氟含量分别为0.98至1 603.50 mg/kg、3.22至617.50 mg/kg和306.80至1 590.80 mg/kg;国产、合资、进口牙膏中游离氟超标数分别为3、0、1个;国产牙膏、合资牙膏和进口牙膏游离氟超标率分别为9.4%、0.0%和10.0%。国产牙膏、合资牙膏和进口牙膏的可溶性氟含量分别为3.06至4 302.50毫克/公斤、9.02至1 667.30毫克/公斤和9.18至4 013.20毫克/公斤;国产牙膏、合资牙膏和进口牙膏中可溶性氟含量超标的分别为9、2、3个;国产牙膏、合资牙膏和进口牙膏中可溶性氟超标率分别为34.4%、16.7%和30.0%。游离氟与可溶性氟的比例分别为国产1.0∶2.7、合资1.0∶2.7、进口1.0∶2.5。置信限(R/d)为0.98。结论不同品牌牙膏中氟化物含量超标，可溶性氟化物含量和比例明显高于游离氟化物，存在氟对牙齿的损害风险，工厂应加强加氟的质量控制。关键词:牙膏;氟化;分析

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来源期刊

中华地方病学杂志我国对人类健康危害特别严重的地方性疾病：克山病、大骨节病、碘缺乏病、地方性氟中毒、地方性砷中毒、鼠疫、布鲁氏菌病、寄生虫、新冠肺炎等疾病，同时还报道多发性自然疫源性疾病。

CiteScore

1.60

自引率

0.00%

发文量

8714

期刊介绍： The Chinese Journal of Endemiology covers predominantly endemic diseases threatening health of the people in the areas affected by the diseases including Keshan disease, Kaschin-Beck Disease, iodine deficiency disorders, endemic fluorosis, endemic arsenism, plague, epidemic hemorrhagic fever, brucellosis, parasite diseases and the diseases related to local natural and socioeconomic conditions; and reports researches in the basic science, etiology, epidemiology, clinical practice, control as well as multidisciplinary studies on the diseases.