Anticaries Potential and Fluorosis Risk From Different Fluoride Toothpastes
2013年10月25日 更新者:Livia Maria Andaló Tenuta、University of Campinas, Brazil
Fluoride toothpaste has been associated not only with declining dental caries prevalence but also with an increase in dental fluorosis.
In the balance of benefits/risks of fluoride toothpaste use, the purpose of this study is to evaluate the availability of fluoride concentration in the mouth (biofilm fuild), as an indicator of fluoride benefits (anticaries effect), and the fluoride concentration in urine, as an indicator of fluoride absorption from ingested toothpastes (with potential to cause dental fluorosis), in a sample of young Brazilian children using toothpaste formulations representative of those available and most used by this age-group.
研究概览
研究类型
介入性
注册 (实际的)
24
阶段
- 阶段1
联系人和位置
本节提供了进行研究的人员的详细联系信息,以及有关进行该研究的地点的信息。
学习地点
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Sao Paulo
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Piracicaba、Sao Paulo、巴西、13414903
- Piracicaba Dental School, University of Campinas
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参与标准
研究人员寻找符合特定描述的人,称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
3年 至 4年 (孩子)
接受健康志愿者
不
有资格学习的性别
全部
描述
Inclusion Criteria:
- Good general health
- Good oral health
学习计划
本节提供研究计划的详细信息,包括研究的设计方式和研究的衡量标准。
研究是如何设计的?
设计细节
- 主要用途:预防
- 分配:随机化
- 介入模型:交叉作业
- 屏蔽:单身的
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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安慰剂比较:Non-fluoride toothpaste
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The volunteers brushed their teeth with 0.3 g of the assigned toothpastes, 3x/day.
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实验性的:Toothpaste 550 µg F/g (NaF/SiO2)
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The volunteers brushed their teeth with 0.3 g of the assigned toothpastes, 3x/day.
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实验性的:Toothpaste 1100 µg F/g (NaF/SiO2)
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The volunteers brushed their teeth with 0.3 g of the assigned toothpastes, 3x/day.
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实验性的:Toothpaste 1450 µg F/g (MFP/CaCO3)
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The volunteers brushed their teeth with 0.3 g of the assigned toothpastes, 3x/day.
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研究衡量的是什么?
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Fluoride concentration in biofilm fluid
大体时间:30min
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Remants of dental plaque (biofilm) will be collected 30 min after brushing with the toothpastes, the fluid will be separated from the solids by centrifugation and the fluoride concentration in the biofilm fluid will be determined by a fluoride electrode adapted for microanalysis.
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30min
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Urinary fluoride excretion
大体时间:8h
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Urine will be collected at two time-points, either before the use of the toothpaste or at the last day of use, in each experimental phase.
Fluoride concentration was determined by an inverted ion-specific fluoride electrode and fluoride excretion will be measured by fluoride/cratinine ratio (mg F/mg creatinine).
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8h
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Fluoride concentration in biofilm solid
大体时间:30min
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Remants of dental plaque (biofilm) will be collected 30 min after brushing with the toothpastes, the fluid will be separated from the solids by centrifugation and the fluoride concentration in the biofilm solids will be determined after acid extraction using a fluoride electrode adapted for microanalysis.
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30min
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Fluoride concentration in saliva
大体时间:30min
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Non-stimulated saliva will be collected at 0 (immediately before toothbrushing), 7, 15 and 30 min after toothbrushing.
Fluoride concentration in saliva will be determined by a ion-specific fluoride electrode, adapted for microanalysis.
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30min
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Amount of toothpaste ingested
大体时间:January 2013 to July 2013
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Determination of amount of toothpaste ingested after one simulated brushing.
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January 2013 to July 2013
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合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
调查人员
- 学习椅:Livia MA Tenuta, PhD、Piracicaba Dental School, University of Campinas
出版物和有用的链接
负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。
一般刊物
- Cury JA, do Amaral RC, Tenuta LM, Del Bel Cury AA, Tabchoury CP. Low-fluoride toothpaste and deciduous enamel demineralization under biofilm accumulation and sucrose exposure. Eur J Oral Sci. 2010 Aug;118(4):370-5. doi: 10.1111/j.1600-0722.2010.00745.x.
- Lima TJ, Ribeiro CC, Tenuta LM, Cury JA. Low-fluoride dentifrice and caries lesion control in children with different caries experience: a randomized clinical trial. Caries Res. 2008;42(1):46-50. doi: 10.1159/000111749. Epub 2007 Nov 27.
- Cury JA, Tenuta LM, Ribeiro CC, Paes Leme AF. The importance of fluoride dentifrices to the current dental caries prevalence in Brazil. Braz Dent J. 2004;15(3):167-74. doi: 10.1590/s0103-64402004000300001. Epub 2005 Mar 18.
- Paes Leme AF, Dalcico R, Tabchoury CP, Del Bel Cury AA, Rosalen PL, Cury JA. In situ effect of frequent sucrose exposure on enamel demineralization and on plaque composition after APF application and F dentifrice use. J Dent Res. 2004 Jan;83(1):71-5. doi: 10.1177/154405910408300114.
- Cury JA, Francisco SB, Simoes GS, Del Bel Cury AA, Tabchoury CP. Effect of a calcium carbonate-based dentifrice on enamel demineralization in situ. Caries Res. 2003 May-Jun;37(3):194-9. doi: 10.1159/000070444.
- Cury JA, Simoes GS, Del Bel Cury AA, Goncalves NC, Tabchoury CP. Effect of a calcium carbonate-based dentifrice on in situ enamel remineralization. Caries Res. 2005 May-Jun;39(3):255-7. doi: 10.1159/000084807.
- Cury JA, Oliveira MJ, Martins CC, Tenuta LM, Paiva SM. Available fluoride in toothpastes used by Brazilian children. Braz Dent J. 2010;21(5):396-400. doi: 10.1590/s0103-64402010000500003.
- Martins CC, Oliveira MJ, Pordeus IA, Cury JA, Paiva SM. Association between socioeconomic factors and the choice of dentifrice and fluoride intake by children. Int J Environ Res Public Health. 2011 Nov;8(11):4284-99. doi: 10.3390/ijerph8114284. Epub 2011 Nov 10.
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查,以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始
2011年1月1日
初级完成 (实际的)
2012年12月1日
研究完成 (实际的)
2013年7月1日
研究注册日期
首次提交
2012年4月30日
首先提交符合 QC 标准的
2012年5月1日
首次发布 (估计)
2012年5月2日
研究记录更新
最后更新发布 (估计)
2013年10月28日
上次提交的符合 QC 标准的更新
2013年10月25日
最后验证
2013年10月1日
更多信息
此信息直接从 clinicaltrials.gov 网站检索,没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求,请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改,我们的网站上也会自动更新.