ArticleBMC oral health2026
Smartwatch-derived sleep estimates in individuals with probable sleep bruxism: an exploratory pilot study.
Article in BMC oral health, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07453121 (Sleep Architecture Patterns in Individuals With Clinically Diagnosed Sleep Bruxism), which is not on this map. Not yet cited in PubMed.
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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.
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.
Sleep Architecture Patterns in Individuals With Clinically Diagnosed Sleep Bruxism: A Pilot Smartwatch-Based Study
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2 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundSleep bruxism (SB) is sleep-related movement disorder potentially affecting sleep architecture. This exploratory pilot study evaluated smartwatch-derived sleep estimates in young adults with a probable SB phenotype versus controls.
methodsIn this cross-sectional study, 30 age- and sex-matched participants (18-50 years) were evaluated. The probable SB phenotype was defined by a triple-validations approach consisting of combined self report and clinical signs agreed upon by two clinicians. Controls were age- and sex-matched. Sleep estimates were recorded at home for 7 consecutive nights using a consumer-grade smartwatch (Apple Watch Series 8); nights with < 240 min of recorded sleep or substantial signal loss were excluded and repeated. Group comparisons used appropriate parametric/nonparametric tests and effect sizes (Cohen's d).
resultsParticipants were analyzed (15 in probable SB group, 15 controls; 86.7% female in each). Total sleep time and light sleep estimates did not differ between groups. Compared with controls, the probable SB group had significantly reduced estimated durations of REM sleep (82.7 ± 18.9 vs. 111.5 ± 17.2 min; p < 0.001; d = 1.59) and deep sleep (49.1 ± 9.8 vs. 60.7 ± 6.9 min; p < 0.001; d = 1.37), with greater device-estimated sleep fragmentation (WASO median 27.0 vs. 3.0 min; p < 0.001; awakenings median 5 vs. 1; p < 0.001). Awakenings correlated positively with wake duration (r = 0.898) and negatively with REM duration (r = - 0.573) (both p < 0.001).
conclusionsIndividuals with probable SB exhibited altered device-estimated sleep patterns, featuring reduced deep/REM sleep and increased fragmentation. Consumer wearables may offer exploratory, adjunctive data on sleep continuity in dental practice but cannot replace physiological sleep staging. Findings warrant confirmation with concurrent polysomnography.
trial registrationClinicalTrials.gov; Registration No: NCT07453121. 25/02/2026.
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