ArticleInternational dental journal2023
Association Between Toothbrushing Habits and COVID-19 Symptoms.
Article in International dental journal, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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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.
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Who cites it
5 citing papers in PubMed.
- Prevalence of Streptococcus mutans harboring the cnm gene encoding cell surface protein Cnm in Japanese children.Scientific reports · 2025Article
- Oral-Health Related Quality of Life of Children in Two Gulf Countries After Lifting of COVID-19 Restrictions: A Comparative Study.Journal of pharmacy & bioallied sciences · 2025Article
- Relationship between oral health literacy and changes in self-assessment of oral health during COVID-19.Journal of dental sciences · 2025Article
- Factors influencing mask-wearing behavior in the context of COVID-19 severity risks in the post-COVID-19 era: a Japanese Nationwide Epidemiological Survey in 2023.Environmental health and preventive medicine · 2025Article
- Association between heated tobacco product use and worsening asthma symptoms: findings from a nationwide internet survey in Japan, 2023.Environmental health and preventive medicine · 2025Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesThe association between toothbrushing and coronavirus disease 2019 (COVID-19) infections is unknown. The aim of this study was to test the hypothesis that the change in time and frequency of toothbrushing is associated with having COVID-19 symptoms.
methodsIn this 8-month retrospective cohort study, we used the data from the Japan COVID-19 and Society Internet Survey (JACSIS; N = 22,366), which was conducted between August and September 2020. The logistic regression analyses were used to calculate the odds ratios (ORs) of having the 3 main COVID-19 symptoms (high fever, cough, and taste and smell disorder). Confounders were age, sex, educational attainment, equivalised income level, self-rated health, health literacy, and living area.
resultsThe mean age of the participants was 49 years (SD = ±17.3), and 49.2% were male. Overall 2704 (12.1%) participants changed (increased or decreased) the time and frequency of toothbrushing, whilst 19,662 (87.9%) did not change. Only 60 participants (0.3%) had the 3 main COVID-19 symptoms. All logistic regression models showed that those who had a change in time and frequency of toothbrushing had higher odds of having the 3 main COVID-19 symptoms compared to those who had unchanged time and frequency of toothbrushing. The ORs ranged from 6.00 (95% confidence interval [CI], 3.60-9.99) in the crude model to 4.08 (95% CI, 2.38-6.98) in the fully adjusted model.
conclusionsThe change in time and frequency of toothbrushing from before to after the COVID-19 pandemic was associated with having the 3 main COVID-19 symptoms.
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