title: Dentin penetration of 2 calcium hydroxide combinations.
abstract: OBJECTIVE
  Calcium hydroxide is a common intracanal medicament. The powder can be mixed with different vehicles for placement in canals. This study examines pH changes in dentin with 2 different calcium hydroxide preparations.
  
  
  METHODS
  The combinations used were calcium hydroxide + distilled water and calcium hydroxide + glycerin (1/7 distilled water). One hundred forty extracted teeth with single canals were used. pH changes in dentin after the intracanal placement of these combinations were evaluated at different dentin thicknesses by measuring the pH of the external environment.
  
  
  RESULTS
  For all dentin thicknesses and at all time periods, the calcium hydroxide + glycerin combination showed significantly higher pH values than the calcium hydroxide + distilled water combination.
  
  
  CONCLUSIONS
  Considering pH elevations, we propose the use of a calcium hydroxide + glycerin combination.
authors.affiliation: Department of Endodontics, Gazi University, Faculty of Dentistry, Samsun, Turkey.
authors.forename: T
authors.initials: T
authors.lastname: Alaçam
authors.forename: H O
authors.initials: HO
authors.lastname: Yoldaş
authors.forename: O
authors.initials: O
authors.lastname: Gülen
mesh_terms: D002126:Calcium Hydroxide / Q000494:pharmacology*; D003481:Cuspid / Q000502:physiology; D003806:Dentin Permeability / Q000187:drug effects*; D004338:Drug Combinations; D005990:Glycerol / Q000494:pharmacology; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007180:Incisor / Q000502:physiology; D012388:Root Canal Irrigants / Q000494:pharmacology*; D014867:Water / Q000494:pharmacology
chemical_list: D004338:Drug Combinations; D012388:Root Canal Irrigants; D014867:Water; D005990:Glycerol; D002126:Calcium Hydroxide