Dental Flossing in Early Adolescence as a Predictor of Habit Maintenance Over Time

Introduction The aim of this study was to evaluate the prevalence of use of dental flossing and associated factors over time. Methodology This two‐wave longitudinal observational study was conducted using an online questionnaire, which included adolescents and young adults who participated in a cross‐sectional study in 2012. Dental flossing was assessed using the question ‘Do you use dental floss?’ Sociodemographic factors, use of dental services, self‐perception of oral health and need for dental care were also evaluated. Data were analysed using adjusted Poisson regression analysis. Results are presented in prevalence ratio (PR) and 95% confidence intervals (95% CIs). Results A total of 202 individuals were followed over time. Of these, 49.01% reported using dental floss at least twice a week and 23.27% used it daily. Individuals who used dental floss daily in childhood had a 69% higher prevalence of flossing over time (PR 1.69; 95% CI 1.12–2.45). Those who had visited the dentist in the last year (PR 1.34; 95% CI 1.02–1.77), who used private oral health services (PR 1.54; 95% CI 1.15–2.06) and who reported excellent/good self‐perceived oral health (PR 1.51; 95% CI 1.14–2.00) also showed a higher prevalence of flossing. Conclusion The use of dental floss in childhood is positively associated with its continuation into adulthood, reinforcing the importance of establishing oral hygiene habits early in life.