Toothbrushing and related factors among high school students in the Southeast of Iran: A cross-sectional study.

INTRODUCTION: Dental caries is one of the most common problems in student, and tooth brushing at least twice a day is one of the preventive measures of dental caries. This study aimed to determine the frequency of daily brushing and its related factors among high school students in the southeast of Iran based on the Health Action Process Approach (HAPA). METHODS: In this cross-sectional study, 2045 high school students of 13-15 years from urban areas of Zahedan in the southeast of Iran with multistage random sampling were selected. A self-administered questionnaire was used to assess demographic background, psychosocial constructs of the HAPA and daily brushing frequency. Binary logistic regression analysis was performed to determine predictors of daily brushing. RESULTS: Only 18% of participants reported tooth brushing at least twice a day, which is the desired brushing behaviour. Multivariate regression showed that increased odds of daily brushing associated with gender (OR = 2.38, 95% CI 1.84-3.08), mother education (OR = 2.27, 95% CI 1.62-3.18), father job (OR = 2.24, 95% CI 1.20-4.19), task self-efficacy (OR = 1.24, 95% CI 1.08-1.42), action planning (OR = 1.10, 95% CI 1.02-1.19) and maintenance self-efficacy (OR = 1.20, 95% CI 1.13- 1.27). CONCLUSION: The brushing behaviour of students needs to be taken seriously in Zahedan. Motivational and volitional constructs of the HAPA include task self-efficacy, action planning, and maintenance self-efficacy could be considered in intervention programmes targeting increase adolescent brushing.