Department of Epidemiology, Janssen Research & Development, LLC, Titusville, NJ, USA.
Global Scientific Engagement - Oral Care, Johnson & Johnson Consumer Inc., Skillman, NJ, USA.
J Clin Periodontol. 2017 Sep;44(9):866-871. doi: 10.1111/jcpe.12765. Epub 2017 Aug 7.
Assess the association of flossing with periodontitis.
This was a cross-sectional study using the National Health and Nutrition Examination Survey (NHANES) years 2011-2014. We used three categories of flossing: 0-1, 2-4 and ≥5 days in the past week and the CDC definition of periodontitis. We calculated odds ratios controlling for age, gender, smoking, drinking, income and dentist visits.
A total of 6939 adult subjects were included, 35% flossed ≤1 time a week, and 40% had periodontitis. After adjustment, the odds of periodontitis were 17% lower for subjects who flossed >1 time a week than for subjects who flossed less often (odds ratio=0.83, 95% CI 0.72-0.97). A dose response was not observed. Men were twice as likely as women to have periodontitis. Younger subjects, non-smokers and subjects with the highest incomes had lower odds of having periodontitis.
Flossing was associated with a modestly lower prevalence of periodontitis. Older age, being male, smoking, low income and less frequent dental visits were associated with a higher prevalence of periodontitis. Flossing 2-4 days a week could be as beneficial as flossing more frequently. This is a cross-sectional study so a causal relation between flossing and periodontitis cannot be established.
评估用牙线清洁牙齿与牙周炎的关系。
这是一项横断面研究，使用了 2011-2014 年国家健康和营养调查（NHANES）的数据。我们使用了每周用牙线清洁牙齿 0-1、2-4 和≥5 天的三个类别，以及疾病预防控制中心对牙周炎的定义。我们通过控制年龄、性别、吸烟、饮酒、收入和看牙医的次数来计算比值比。
共纳入 6939 名成年受试者，35%的受试者每周用牙线清洁牙齿≤1 次，40%的受试者患有牙周炎。调整后，每周用牙线清洁牙齿>1 次的受试者患牙周炎的几率比用牙线清洁牙齿较少的受试者低 17%（比值比=0.83，95%可信区间 0.72-0.97）。未观察到剂量反应。男性患牙周炎的可能性是女性的两倍。年龄较小、不吸烟和收入最高的受试者患牙周炎的几率较低。
用牙线清洁牙齿与牙周炎的患病率略低有关。年龄较大、男性、吸烟、低收入和较少看牙医与牙周炎患病率较高有关。每周用牙线清洁牙齿 2-4 天可能与更频繁地用牙线清洁一样有益。这是一项横断面研究，因此不能确定用牙线清洁与牙周炎之间存在因果关系。
