title: [The relationship between dietary factors and susceptibility of periodontal disease].
abstract: OBJECTIVE
  A clinical survey was made on the life style and dietary behaviors of people with non-periodontal disease and people with periodontal disease for prevention and treatment of periodontal diseases.
  
  
  METHODS
  72-hour diet analysis and frequency analysis of dietary intake were performed in 60 patients with moderate-to-severe periodontal disease and 60 patients with healthy periodontal tissues randomly selected in the Ninth People's Hospital for dental treatment. The data was analyzed by Student's t test and Chi-square test with SPSS13.0 software package.
  
  
  RESULTS
  There was significant difference (P<0.05) in vitamin C, flavonoids and β-carotene dietary intake between control group and periodontal disease group; In periodontal disease group, dietary intake of selenium and zinc intake was different from the normal control, but the difference was not statistically significant (P>0.05).
  
  
  CONCLUSIONS
  There is a close relationship between oral health and antioxidant nutrients. Lower dietary vitamin C content, flavonoid content and β-carotene intake lead to destruction of periodontal tissue and higher incidence of periodontal disease.
authors.affiliation: Department of Clinical Nutriology, Shanghai Jiao Tong University School of Medicine, Shanghai, China. jyyyk5558@yahoo.com.cn
authors.forename: Mei-fang
authors.initials: MF
authors.lastname: Zhang
authors.forename: Run-jie
authors.initials: RJ
authors.lastname: Chen
authors.forename: Wen
authors.initials: W
authors.lastname: Tang
authors.forename: Hai-feng
authors.initials: HF
authors.lastname: Zhang
mesh_terms: D000975:Antioxidants; D001205:Ascorbic Acid; D004032:Diet; D006801:Humans; D010510:Periodontal Diseases; D010519:Periodontium; D019207:beta Carotene
chemical_list: D000975:Antioxidants; D019207:beta Carotene; D001205:Ascorbic Acid