title: Solubility and pH of direct pulp capping materials: a comparative study.
abstract: BACKGROUND
  The objective of the present study was to compare solubility and pH of 6 direct pulp capping materials.
  
  
  METHODS
  Specimens of each material - i.e., Dycal, Calcicur, Calcimol LC, TheraCal LC, MTA Angelus and ProRoot MTA - were prepared and immersed in water. Solubility was determined after 24 hours and 2 months and analyzed statistically using a 1-way ANOVA and post hoc Tukey test. pH values were measured 3 and 24 hours after manipulation.
  
  
  RESULTS
  All direct pulp capping materials showed low solubility; the pH of tested materials ranged from 10 to 12 and showed a nonsignificant increase/reduction after 24 hours.
  
  
  CONCLUSIONS
  Within the limitations of this in vitro study, the direct pulp capping materials studied showed different solubility even if no changes were recorded over time. All of the materials showed a very alkaline pH.
authors.affiliation: Department of Clinical-Surgical, Diagnostic and Pediatric Sciences - Section of Dentistry, University of Pavia, Pavia - Italy.
authors.forename: Claudio
authors.initials: C
authors.lastname: Poggio
authors.affiliation: Department of Clinical-Surgical, Diagnostic and Pediatric Sciences - Section of Dentistry, University of Pavia, Pavia - Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Lombardini
authors.affiliation: Department of Clinical-Surgical, Diagnostic and Pediatric Sciences - Section of Dentistry, University of Pavia, Pavia - Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Colombo
authors.affiliation: Department of Brain and Behavioural Sciences - Section of Statistics, University of Pavia, Pavia - Italy.
authors.forename: Riccardo
authors.initials: R
authors.lastname: Beltrami
authors.affiliation: Department of Molecular Medicine, Institute of Biochemistry, University of Pavia, Pavia - Italy.
authors.forename: Simonetta
authors.initials: S
authors.lastname: Rindi
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry; D017610:Calcium Compounds / Q000737:chemistry; D002126:Calcium Hydroxide / Q000737:chemistry; D003738:Dental Cements / Q000737:chemistry*; D003785:Dental Pulp Capping; D004338:Drug Combinations; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing; D010087:Oxides / Q000737:chemistry; D017640:Silicates / Q000737:chemistry; D012995:Solubility
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D003738:Dental Cements; D004338:Drug Combinations; D010087:Oxides; D017640:Silicates; C086631:mineral trioxide aggregate; D002126:Calcium Hydroxide