Whether physical activity is associated with subsequent complete tooth loss remains uncertain. We examined this association among adults aged 45 years or older in the Health and Retirement Study (HRS). We studied HRS participants who retained natural teeth in 2006 and assessed incident complete tooth loss in 2012. The fully adjusted sample included 11,147 participants. Logistic regression estimated odds ratios (ORs) and 95
Contemporary oral health data from conflict-affected Ukraine are scarce. We described the caries burden and its behavioural correlates among attendees at two humanitarian dental mission waves (April 2025, April 2026) at geographically exposed Korosten and rear-area Ternopil. Two-wave repeated cross-sectional study in a convenience sample of civilians attending free MacKay Memorial Hospital mobile dental clinics; participants were recruited afresh at each wave and not followed longitudinally. One calibrated dentist examined everyone at both sites in both waves, recording dentition status by WHO criteria, from which DMFT (decayed, missing and filled permanent teeth) was derived. A back-translated questionnaire was administered by interpreters immediately before examination. The primary outcome was total DMFT, modelled by negative-binomial regression with cluster-robust standard errors, adjusting for wave, location, sex, age (restricted cubic spline, four knots) and three oral hygiene behaviours. Secondary outcomes were any untreated decay, high caries burden (DMFT ≥ 14) and care indices. Holm correction across nine pre-specified tests was the primary criterion for confirmatory claims. Of 112 eligible attendees (age 5–81 years; 52.7
The aim of this study was to evaluate the shear bond strength (SBS), microleakage (ML), and resin tag length (RTL) of three restorative materials—Harvard POWERmer Bulk OptiCaps® (PB), Fuji IX GP® FAST (FF), and Cention® Forte (Alkasite, CF) —when bonded to dentin. Thirty-three occlusal dentin surfaces were prepared and randomly allocated to three groups (n = 11) for evaluation of shear bond strength. Class V cavities were prepared on the buccal surfaces of 30 third molars and randomly assigned to three groups (n = 10) for microleakage evaluation. The cavities were restored with Harvard POWERmer Bulk OptiCaps® (PB), Fuji IX GP® FAST (FF), or Cention® Forte (CF). Microleakage was evaluated after immersion in a 1
Masseter ultrasonographic characteristics remain incompletely described in antidepressant users with differing clinical bruxism classifications. This study compared three predefined clinical groups. This single-center cross-sectional study used prospectively acquired clinical and imaging data from 123 adults: antidepressant users with clinically defined probable bruxism and a self-reported temporal association (G1, n = 42), antidepressant users without probable bruxism (G2, n = 31), and non-antidepressant controls without probable bruxism (G3, n = 50). For G1, recalled onset or worsening of bruxism-related complaints after treatment initiation was recorded during anamnesis; this chronology was entirely retrospective. Bilateral thickness, estimated volume, and a reciprocal strain-elastography metric were measured at rest and during voluntary clenching; fractal dimension was calculated from resting images. Nonparametric comparisons, adjusted regression models, and secondary inter-parameter correlations were performed. G1 had higher resting and clenching thickness, estimated volume, reciprocal strain-elastography values, and resting fractal dimension than G2 and G3. Thickness, estimated volume, and the reciprocal strain-elastography metric increased from rest to clench in all groups. Between-group differences remained statistically evident in models adjusted for the measured covariates. Masseter ultrasound-derived measurements differed among the predefined clinical groups. These findings do not establish the onset or progression of bruxism, a causal effect of antidepressant use, or a medication-specific muscle phenotype.
Video-sharing platforms are increasingly used for health information, but surgery-focused oral cancer content may differ by platform and uploader. We compared information quality, observable presentation characteristics, and raw engagement indicators on Douyin and Bilibili. We analyzed 154 videos retrieved using the combined Chinese-language terms “oral cancer” and “surgery.” Quality was assessed using a Global Quality Scale (GQS)-based measure, modified DISCERN (mDISCERN), Journal of the American Medical Association (JAMA) Benchmark criteria, and abbreviated Patient Education Materials Assessment Tool for Audiovisual Materials (PEMAT A/V) items. The study-specific four-domain content coverage indicator, visual focus, emotional tone, and raw engagement indicators were also compared across platforms and between healthcare professional (HCP)-generated and patient-experience videos. Douyin videos had higher GQS scores than Bilibili videos (median 23 vs. 20; P < 0.001) and higher understandability proportions (median 0.75 vs. 0.50; P < 0.001). On both platforms, HCP-generated videos had higher mDISCERN and JAMA scores than patient-experience videos, whereas patient-experience videos had higher scores on the study-specific four-domain content coverage indicator (all P < 0.05), although the Bilibili patient-experience subgroup was small (n = 11). HCP videos more often used talking-head presentations and positive or educational tones, whereas patient-experience videos more often showed postoperative wounds or daily-life content and fearful or regretful tones. Primary models associated Douyin with higher raw engagement counts and patient-experience videos with lower raw counts on selected indicators (adjusted ratios, 0.20–5.75; all q < 0.05), but none remained significant in the upload-age–adjusted sensitivity analysis (n = 101). Within this surgery-focused sample, information quality, presentation characteristics, and raw engagement indicators differed by platform and uploader. However, the engagement analyses were based on unstandardized interaction counts and should not be interpreted as measures of reach or exposure.
