title: Unstimulated and stimulated salivary characteristics of 12-13-year-old schoolchildren with and without dental erosion.
abstract: OBJECTIVE
  To evaluate unstimulated and stimulated salivary characteristics of 12-13-year-old schoolchildren with and without dental erosion.
  
  
  METHODS
  The subjects were sixty schoolchildren from 12-13 years old (30 boys and 30 girls) with dental erosion and sixty age- and sex-matched controls. Unstimulated and stimulated whole saliva were collected. Flow rate, pH level, buffering capacity, bicarbonate, buffer base, calcium, phosphorus and urea concentrations of whole saliva were measured. All data were analysed using SPSS 13.0.
  
  
  RESULTS
  The flow rate, pH, bicarbonate, buffer base, calcium, phosphorus, and urea of unstimulated and stimulated saliva did not differ significantly between the dental erosion group and the control group (P>0.05). The stimulated salivary buffering capacity did not vary between the two groups (Fisher's exact test, P>0.05).
  
  
  CONCLUSIONS
  The salivary characteristics are similar amongst 12-13-year-old schoolchildren with and without dental erosion in Southern China.
authors.affiliation: Department of Stomatology, the Third Affiliated Hospital, Sun Yat-sen University, 600 Tian He Road, Guangzhou, Guangdong, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Wang
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhou
authors.forename: Yuan Hang
authors.initials: YH
authors.lastname: Zhu
authors.forename: Huan Cai
authors.initials: HC
authors.lastname: Lin
mesh_terms: D000293:Adolescent; D001639:Bicarbonates / Q000032:analysis; D002021:Buffers; D002118:Calcium / Q000032:analysis; D016022:Case-Control Studies; D016009:Chi-Square Distribution; D002648:Child; D002681:China; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D010758:Phosphorus / Q000032:analysis; D010812:Physical Stimulation; D012463:Saliva / Q000737:chemistry* / Q000378:metabolism*; D012636:Secretory Rate; D013268:Stimulation, Chemical; D014077:Tooth Erosion / Q000503:physiopathology*; D014508:Urea / Q000032:analysis
chemical_list: D001639:Bicarbonates; D002021:Buffers; D010758:Phosphorus; D014508:Urea; D002118:Calcium