Evidence map›Paper›PMID 32443137›Full record

ReviewPediatric research2021

Controversy: The evolving science of fluoride: when new evidence doesn't conform with existing beliefs.

Christine Till, Rivka Green

Open access · greenAbstract readReview
In one paragraph

Review in Pediatric research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 20% of its field
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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Biomimetic hydroxyapatite and caries prevention: a systematic review and meta-analysis.Canadian journal of dental hygiene : CJDH = Journal canadien de l'hygiene dentaire : JCHD · 2021
    Pooled it
  2. Article
  3. Article
  4. Article
  5. How scientists should disagree.Pediatric research · 2024
    Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Invitation for controversy.Pediatric research · 2021
    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 at 1 institution in 1 country.

Christine TillDepartment of Psychology, York University, 4700 Keele St., Toronto, ON, Canada. ctill@yorku.ca.
Rivka GreenDepartment of Psychology, York University, 4700 Keele St., Toronto, ON, Canada.
York University · CA

Funding

Fluoride in Tooth Dentin and Neurodevelopmental Outcome in a Canadian CohortR01ES030365 · NIEHS · YORK UNIVERSITY · PI LANPHEAR, BRUCE P, TILL, CHRISTINE · 2019 to 2024
$2.1M
Impact of early life fluoride exposure on cognitive and behavioural outcomes in childrenR21ES027044 · NIEHS · YORK UNIVERSITY · PI TILL, CHRISTINE · 2016 to 2017
$362k
NIEHS NIH HHS R01 ES030365NIEHS NIH HHS R21 ES027044
6 · The paper itself

Abstract

Over the past 75 years, health authorities have declared that community water fluoridation-a practice that reaches over 400 million worldwide-is safe. Yet, studies conducted in North America examining the safety of fluoride exposure in pregnancy were nonexistent. When a Canadian study reported that higher fluoride exposure in pregnant women was associated with lower IQ scores in young children, critics attacked the methodology of the study and discounted the significance of the results. Health authorities continued to conclude that fluoride is unequivocally safe, despite four well-conducted studies over the last 3 years consistently linking fluoride exposure in pregnancy with adverse neurodevelopmental effects in offspring. We describe the challenges of conducting fluoride research and the overt cognitive biases we have witnessed in the polarized fluoride debate. The tendency to ignore new evidence that does not conform to widespread beliefs impedes the response to early warnings about fluoride as a potential developmental neurotoxin. Evolving evidence should inspire scientists and health authorities to re-evaluate claims about the safety of fluoride, especially for the fetus and infant for whom there is no benefit.

Indexed as

Evidence-Based MedicineChildFemaleFluoridesHumansInfantMalePregnancyFluorides

Identifiers

PMID32443137
PMCPMC9922476
OpenAlexW3026248059

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.