Evidence map›Paper›PMID 40905491›Full record

ArticleJournal of oral rehabilitation2026

The Effect of Clear Aligners on Awareness of Tooth Clenching.

Grace Francois, Mauro Farella, Hamza Bennani

Abstract read
In one paragraph

Article in Journal of oral rehabilitation, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–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

1 citing paper in PubMed.

  1. 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

3 authors.

Grace FrancoisDiscipline of Orthodontics, Faculty of Dentistry, University of Otago, Dunedin, New Zealand.
Mauro FarellaDiscipline of Orthodontics, Faculty of Dentistry, University of Otago, Dunedin, New Zealand.ORCID https://orcid.org/0000-0003-4516-647X
Hamza BennaniDiscipline of Orthodontics, Faculty of Dentistry, University of Otago, Dunedin, New Zealand.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionClear aligners (CAs) are an increasingly popular treatment option in modern dentistry, yet surprisingly little is known about their potential unwanted side effects. Previous observations suggest that CAs may induce tooth clenching, which, in turn, could lead to masticatory muscle discomfort or pain. Nevertheless, available information is mainly subjective, anecdotal, and contradictory. The aim of this study was to investigate the effect of wearing passive CAs on both objectively measured tooth clenching and the awareness of tooth clenching during stress-inducing tasks.

methodsTwenty-one study participants completed a 10-min stress-inducing mental arithmetic task, both with and without the passive CAs in place. During these tasks, masticatory muscle activity (MMA) was continuously recorded to objectively assess clenching. Following completion of each task, participants rated their perceived clenching and stress using visual-analogue scales. After the final task, they completed the Oral Behaviours and Somatization Questionnaire. Spearman's correlation and mixed models were used for the statistical analyses.

resultsWearing CAs did not significantly affect MMA or perceived clenching. MMA was not associated with self-reported oral behaviours, but a significant association was found with somatisation scores (p < 0.05). Individuals with higher somatisation scores experienced more MMA contraction episodes compared to those with lower scores (R = 0.47; p = 0.015).

conclusionsWearing an aligner does not influence either perceived or objectively assessed clenching over the short term. Self-reported clenching is not a reliable measure of actual clenching behaviours. Somatisation appears to be a key mediator in the relationship between clenching and clear aligner wear.

Indexed as

Masticatory MusclesOrthodontic Appliances, RemovableAdultAwarenessBite ForceElectromyographyFemaleHumansMaleStress, PsychologicalYoung Adultbruxismclear alignerselectromyographymasticatory muscle activityoral parafunctionorthodonticstooth clenching

Identifiers

PMID40905491
PMCPMC12705291

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LicenceCC BY-NC-ND
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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.