Toothbrushing Behaviour and Periodontal Pocketing: An 11-year longitudinal study
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CitationJoshi S. Suominen AL. Knuuttila M. Bernabé E. (2018). Toothbrushing Behaviour and Periodontal Pocketing: An 11-year longitudinal study. JOURNAL OF CLINICAL PERIODONTOLOGY, 45 (2) , 196–203. 10.1111/jcpe.12844.
To explore the association between toothbrushing behaviour and change in periodontal pocketing among adults.
We pooled data from 1,025 adults, aged 30–89 years, who participated in two national surveys in Finland (Health 2000 and Health 2011, BRIF8901) and reported their toothbrushing frequency. A cumulative measure of regular toothbrushing was created by counting the number of times participants reported brushing twice or more daily across the two surveys (ranging from 0 to 2). The association between toothbrushing behaviour and the number of teeth with periodontal pocket depth (PPD) ≥4 mm over 11 years was assessed in linear regression models adjusting for confounders.
There was a clear dose–response relationship between toothbrushing frequency (either at baseline or follow-up) and change in number of teeth with PPD ≥ 4 mm. There was also evidence of a cumulative effect of regular toothbrushing on change in number of teeth with PPD ≥ 4 mm. Participants who reported brushing twice or more a day in both surveys developed 1.99 (95% CI: 1.02–2.95) fewer teeth with PPD ≥ 4 mm than those who did not report this behaviour in any survey.
This 11-year prospective study showed that toothbrushing behaviour was associated with smaller increments in the number of teeth with periodontal pocketing.