title: A simplified quantitative test--adapted Checkbuf test--for resting saliva buffering capacity compared with a standard test.
abstract: OBJECTIVE
  The aim of this study was to adapt a quantitative test for stimulated saliva, known as the Checkbuf test, to measure the buffering capacity of resting saliva and to evaluate its correlation with the Ericsson test for resting saliva.
  
  
  METHODS
  Resting saliva was collected from 112 patients. Buffering capacity was assessed with the adapted Checkbuf test and 4 other methods: Ericsson test for resting saliva, Checkbuf test, and commercially available paper and liquid colorimetric tests for stimulated saliva. Data were analyzed by Cohen kappa coefficient to evaluate the agreement between the Ericsson test and the other tests.
  
  
  RESULTS
  There was a significant positive agreement between the Ericsson test for resting saliva and adapted Checkbuf test (kappa = 0.708). However, there were no agreements between the Ericsson test and the 3 other tests.
  
  
  CONCLUSIONS
  This study demonstrated that the adapted Checkbuf test is useful for measuring resting saliva buffering capacity, even for subjects with low salivary flow rates.
authors.affiliation: Cariology and Operative Dentistry, Department of Restorative Sciences, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan. kitasako.ope@tmd.ac.jp
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Kitasako
authors.forename: Michael F
authors.initials: MF
authors.lastname: Burrow
authors.forename: Laila N
authors.initials: LN
authors.lastname: Huq
authors.forename: Margaret A
authors.initials: MA
authors.lastname: Stacey
authors.forename: Eric C
authors.initials: EC
authors.lastname: Reynolds
authors.forename: Junji
authors.initials: J
authors.lastname: Tagami
mesh_terms: D000328:Adult; D000368:Aged; D002021:Buffers; D003124:Colorimetry / Q000295:instrumentation / Q000379:methods; D004358:Drug Therapy; D005260:Female; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008875:Middle Aged; D011933:Reagent Kits, Diagnostic / Q000145:classification / Q000592:standards; D012015:Reference Standards; D012463:Saliva / Q000502:physiology*; D012636:Secretory Rate / Q000502:physiology; D014987:Xerostomia / Q000503:physiopathology; D055815:Young Adult
chemical_list: D002021:Buffers; D011933:Reagent Kits, Diagnostic