Department of Preventive Dentistry & Public Oral Health, and Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea.
Dazhou Vocational and Technical College, Dazhou, China.
Epidemiol Health. 2024;46:e2024052. doi: 10.4178/epih.e2024052. Epub 2024 May 24.
The aim of this study was to estimate the association between household income and dental flossing.
This cross-sectional study investigated the impact of household income on flossing among 9,391 adults aged 30+ with ≥20 natural teeth, utilizing data from the seventh Korea National Health and Nutrition Examination Survey (2016-2018). Outcome measures included flossing (yes/no), with income categorized into 4 levels: lowest, medium to low, medium to high, and highest. Logistic regression, adjusted for age, gender, brushing frequency, recent dental exams, periodontitis, smoking, and alcohol use, was employed to evaluate the influence of socioeconomic status on oral hygiene practices.
In the highest income group, flossing was 62.6% more prevalent than in the lowest income group (adjusted odds ratio [aOR], 1.63; 95% CI, 1.27 to 2.08). The strongest association between income levels and flossing was observed in individuals aged ≥70 years (aOR, 3.64; 95% CI, 1.86 to 7.11), with a decreasing strength of association in the 60s (aOR, 1.72; 95% CI, 1.05 to 2.84) and 50s age groups (aOR, 1.69; 95% CI, 1.07 to 2.68). Higher-income women demonstrated a higher frequency of flossing than their lower-income counterparts (aOR, 1.67; 95% CI, 1.24 to 2.23). Higher-income individuals without periodontitis were more likely to floss (aOR, 1.64; 95% CI, 1.23 to 2.18), and among those with periodontitis, flossing was significantly associated only with the highest income category (aOR, 1.64; 95% CI, 1.10 to 2.44).
The findings of this study indicate a significant correlation between higher household income levels and an increased prevalence of flossing.
本研究旨在评估家庭收入与使用牙线之间的关联。
本横断面研究利用 2016-2018 年第七次韩国国家健康与营养调查（KNHANES）中≥30 岁、≥20 颗天然牙的 9391 名成年人的数据，调查了家庭收入对使用牙线的影响。结果测量包括使用牙线（是/否），收入分为 4 个水平：最低、中低、中高和最高。采用 logistic 回归，调整年龄、性别、刷牙频率、最近的牙科检查、牙周炎、吸烟和饮酒因素，评估社会经济地位对口腔卫生习惯的影响。
在最高收入组中，使用牙线的比例比最低收入组高 62.6%（调整后的优势比[aOR]，1.63；95%可信区间[CI]，1.27 至 2.08）。在≥70 岁的人群中，收入水平与使用牙线之间的关联最强（aOR，3.64；95%CI，1.86 至 7.11），在 60 多岁（aOR，1.72；95%CI，1.05 至 2.84）和 50 多岁（aOR，1.69；95%CI，1.07 至 2.68）人群中，关联强度逐渐减弱。高收入女性比低收入女性更频繁地使用牙线（aOR，1.67；95%CI，1.24 至 2.23）。无牙周炎的高收入个体更有可能使用牙线（aOR，1.64；95%CI，1.23 至 2.18），而在患有牙周炎的个体中，仅与最高收入类别相关（aOR，1.64；95%CI，1.10 至 2.44）。
本研究结果表明，家庭收入水平较高与使用牙线的比例增加显著相关。
