title: [Epidemiological survey of dentine hypersensitivity of young people in Chengdu City].
abstract: OBJECTIVE
  To investigate the prevalence and risk factors of dentine hypersensitivity of young people in Chengdu city.
  
  
  METHODS
  The dentine hypersensitivity of 741 cases aged 18-35 living in Chengdu city were surveyed with questionnaire and oral examination by random collection during June to July in 2008. The relative risk factors to dentine hypersensitivity were analyzed.
  
  
  RESULTS
  128 cases (17.27%) were diagnosed as dentine hypersensitivity. The prevalence of dentine hypersensitivity was higher among female than male (P<0.01). Cold was the most common stimulus for dentine hypersensitivity (62.80%). The most common affected tooth was the right maxillary first premolar (15.51%). Acid regurgitation, carbonated beverage, hard toothbrush type and heavy toothbrushing force were risk factors to dentine hypersensitivity.
  
  
  CONCLUSIONS
  The prevalence of dentine hypersensitivity of Chengdu city's young people is widespread. Acid and incorrect toothbrushing methods can cause dentine hypersensitivity. The correct protective measure to dentine hypersensitivity should be publicized.
authors.affiliation: Dept. of Preventive Dentistry, West China College of Stomatology, Sichuan University, Chengdu 610041, China.
authors.forename: Chen-shan
authors.initials: CS
authors.lastname: Tan
authors.forename: De-yu
authors.initials: DY
authors.lastname: Hu
authors.forename: Xu
authors.initials: X
authors.lastname: Fan
authors.forename: Xue
authors.initials: X
authors.lastname: Li
authors.forename: Ke-hua
authors.initials: KH
authors.lastname: Que
mesh_terms: D000368:Aged; D001641:Bicuspid; D003807:Dentin Sensitivity; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012307:Risk Factors; D011795:Surveys and Questionnaires; D014099:Toothbrushing