title: [Study on the periodontal health status of 2 628 adults in Ningxia Hui autonomous region].
abstract: OBJECTIVE
  To study the periodontal health status of Hui and Han adults in Ningxia Hui autonomous region, thus to provide scientific basis for the establishment of oral health care policies in this region.
  
  
  METHODS
  2 628 adults in Ningxia Hui autonomous region were investigated in this study according to the criterion issued by World Health Organization on the basic methods of oral health investigation and China oral health third epidemiological survey protocol. The inspection item included gingival bleeding (bleeding on probing, BOP), dental calculus, probing depth (PD) and attachment loss (AL). SPSS 15.0 statistical software was applied to analyze the results.
  
  
  RESULTS
  1) The positive rate of BOP sites, detection rate of calculus and PD were peaked in 36-45 and 46-59 years old, but in the > or = 60 age group rather lower. The prevalence of periodontitis and the percentage of AL > or = 4 mm sites were increased with the adults' age. 2) In addition to the percentage of AL > or = 4 mm sites, the differences of the other indicators between the genders were not statistically significant. 3) The positive rate of BOP sites, detection rate of calculus, PD, the prevalence of periodontitis and the percentage of AL > or = 4 mm sites were higher for the mountain areas than the plain areas. 4) Hui population's positive rate of BOP sites, detection rate of calculus, PD, the prevalence of periodontitis and the percentage of AL > or = 4 mm sites were significantly lower than the Han population in Ningxia.
  
  
  CONCLUSIONS
  The periodontal health status of adults in Ningxia Hui autonomous region is associated with age, gender, nationality and region.
authors.affiliation: Postgraduate Education College, Ningxia Medical University, Yinchuan 750004, China.
authors.forename: Wenliang
authors.initials: W
authors.lastname: Dong
authors.forename: Min
authors.initials: M
authors.lastname: Ma
authors.forename: Zhibin
authors.initials: Z
authors.lastname: Duan
authors.forename: Bing
authors.initials: B
authors.lastname: Wang
authors.forename: Chunhua
authors.initials: C
authors.lastname: Han
authors.forename: Yongqing
authors.initials: Y
authors.lastname: Huang
mesh_terms: D000328:Adult; D002681:China; D005260:Female; D006304:Health Status; D006801:Humans; D008297:Male; D017622:Periodontal Attachment Loss; D010518:Periodontitis