| Aim: At present,the relationship between dietary fiber intake and the risk of periodontitis is inconsistent at home and abroad.This study intends to use the National Health and Nutrition Examination Survey database to explore the relationship between dietary fiber of total,fruit fiber,vegetable fiber and cereal fiber intake and the risk of periodontitis,providing a scientific basis for the prevention of periodontitis.Methods: The data of this study were obtained from the National Health and Nutrition Examination Survey database of the United States.The subjects included in this study were adults aged 30 and above in the surveys of 2009~2010,2011~2012 and 2013~2014.The study included physical examinations,laboratory tests and questionnaires,collecting information on demographic and sociological characteristics,lifestyle,blood pressure,blood sugar and disease history.Dietary data were obtained through two 24-hour dietary recall interviews.In this study,variance analysis and chi-square test were used to compare the differences in baseline characteristics between patients with mild,moderate and severe periodontitis and patients with non-periodontitis.Using univariate and multivariate binary logistic regression respectively explore the total dietary fiber,vegetable fiber,fruits and cereal fiber intake and risk of periodontitis,the relationship between the using restricted cubic spline model to assess the dose response relationship,stratified according to the research object of age,sex,further explore the relationship between dietary fiber intake and risk of periodontitis.The relationship between the intake of total dietary fiber,vegetable fiber,fruit fiber and grain fiber and the risk of mild,moderate and severe periodontitis was explored by using univariate and multivariate multinominal logistic regression.Advantage analysis explores the importance of dietary fiber on periodontitis.Results: A total of 8,359 adults aged 30 or older were included in the analyses.The weighted total prevalence of periodontitis was 41.38%.The weighted prevalence of mild,moderate,and severe periodontitis was 4.28%,29.73%,and 7.37%,respectively.1.Dietary fiber intake and binary logistic regression analysis of the relationship of periodontitis(1)univariate logistic regression analysis results showed that compared with the lowest intake group(Q1),highest intake group(Q4)total dietary fibre,vegetable fibre intake and the relationship between the risk of periodontitis was statistically significant(P<0.05),the odds ratio(OR)and 95%confidence interval(CI)were 0.69(0.59,0.80),0.79(0.67,0.93);Adjusting for age,gender of multivariate logistic regression(model 1)the analysis results show that compared with the Q1 group,Q4group total dietary fibre,vegetable fibre and cereal fiber intake and the relationship between the risk of periodontitis was statistically significant(P<0.05),OR(95%CI)were 0.56(0.47,0.66),0.70(0.59,0.83)and 0.76(0.61,0.95);Adjusting for age,gender,race,marital status,education level,family income,smoking,diabetes,high blood pressure,BMI,the daily energy intake multivariate logistic regression(model 2)the analysis results show that compared with the Q1 group,Q4 group total dietary fiber and cereal fiber intake and risk of periodontitis was statistically significant(P<0.05),the relationship between its OR(95%CI)were 0.59(0.49,0.71),0.77(0.59,0.99).However,there was no significant difference between the intake of fruit fiber and vegetable fiber and the risk of periodontitis(P>0.05).(2)according to multivariate logistic regression(model 2)analysis grouped by age and gender,the relationship between total dietary fiber,vegetable fiber intake and periodontitis risk in group Q4 was statistically significant(P<0.05)compared with group Q1 in group 30-44 years old.Compared with group Q1,the relationship between total dietary fiber intake and periodontitis risk in group Q4 was statistically significant(P<0.05)in group 30-44 years old.No statistically significant association was found between dietary fiber intake and periodontitis risk in the group aged 65 years or older(P>0.05).In the male population,compared with group Q1,the relationship between total dietary fiber intake and periodontitis risk in group Q4 was statistically significant(P<0.05).In the female population,compared with group Q1,the relationship between total dietary fiber intake and periodontitis risk in group Q4 was statistically significant(P<0.05).(3)the results of dose response analysis showed that there was a non-linear relationship between total dietary fiber and cereal fiber and the risk of periodontitis after controlling for confounders(P???=0.001;P???=0.04).2.Disordered multivariate multinominal logistic regression analysis of the relationship between dietary fiber intake and mild,moderate and severe periodontitis(model 2)showed that,compared with group Q1,the relationship between grain fiber intake and the risk of moderate periodontitis in group Q4 was statistically significant(P<0.05),and the corresponding OR(95%CI)was 0.79(0.63,0.99).Compared with group Q1,the relationship between total dietary fiber and grain fiber intake in group Q4 and the risk of severe periodontitis was statistically significant(P<0.05),and the corresponding OR(95%CI)was 0.45(0.32,0.63)and 0.60(0.49,0.73),respectively.No statistical association was found between dietary fiber intake and risk of mild periodontitis(P>0.05).3.The advantage analysis,according to the results of the standardization of periodontitis factors affecting the weight advantage from big to small(26.41%),followed by age,education level(20.95%),gender(14.37%),race(12.40%),smoking(9.58%),annual family income(4.39%),diabetes(4.05%),hypertension(3.47%),and total daily energy intake(2.30%),total dietary fiber(1.07%),marital status(0.66%),BMI(0.35%).Conclusions: Dietary fiber intake is associated with the risk of periodontitis.Increased dietary fiber intake of cereals may be associated with reduced risk of periodontitis.It is suggested to increase dietary fiber intake to reduce the occurrence of periodontitis. |
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