Evidence map›Paper›PMID 27177581›Full record

SynthesisJournal of epidemiology and community health2016

Does cessation of community water fluoridation lead to an increase in tooth decay? A systematic review of published studies.

Lindsay McLaren, Sonica Singhal

Abstract readSystematic Review
In one paragraph

Synthesis in Journal of epidemiology and community health, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
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  15. Review
  16. Article
  17. Fluoridation cessation: More science from Alberta.Community dentistry and oral epidemiology · 2017
    Article
  18. Maintaining Good Oral Health With Fluoridated Water.American journal of lifestyle medicine
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Lindsay McLarenDepartment of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada.
Sonica SinghalDiscipline of Dental Public Health, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada.

Funding

CIHR
6 · The paper itself

Abstract

backgroundCessation of community water fluoridation (CWF) appears to be occurring with increasing frequency in some regions. Our objective was to comprehensively review published research on the impact of CWF cessation on dental caries.

methodsWe searched 13 multidisciplinary databases. Results were synthesised qualitatively and quantitatively.

resultsWe identified 15 instances of CWF cessation ('intervention') in 13 countries, which covered a broad time frame (1956-2003) and diverse geographical and political/economic contexts. Overall, results were mixed, but pointed more to an increase in caries postcessation than otherwise. For example, of the 9 studies with at least moderate methodological quality based on criteria we developed for this review, 5 showed an increase in caries postcessation. 3 studies did not show an increase in caries postcessation; however, important postcessation changes (eg, implementation of alternative fluoride delivery programmes) and/or large-scale social change may have contributed to those effects. Of the 3 study groupings that permitted quantitative synthesis, 2 showed statistically significant mean overall increase in caries postcessation; however, quantitative synthesis results must be interpreted cautiously.

conclusionsOverall, the published research points more to an increase in dental caries post-CWF cessation than otherwise. However, the literature is highly diverse and variable in methodological quality. To build this literature, it is important to exploit research opportunities presented by CWF cessation. Remaining knowledge gaps include the impact of CWF cessation on the distribution of dental caries (ie, equitable or not) and understanding the decision-making circumstances around CWF cessation.

Indexed as

FluoridationWater SupplyDental CariesHumansDENTAL HEALTHPOLICYPREVENTIONSYSTEMATIC REVIEWS

Identifiers

PMID27177581
PMCPMC5013153

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.