title: The use of calcium-silicate cements to reduce dentine permeability.
abstract: OBJECTIVE
  To evaluate in vitro the effectiveness of different calcium-silicate (CS) cements specifically designed for dentine permeability reduction.
  
  
  METHODS
  Fifty dentine discs were prepared from caries free human molars extracted for surgical reasons. The treatment consisted in applying two different experimental CS cements on dentine surface. Dentine discs treated only with EDTA served as negative control group. Treatment with D-Sense Crystal and Clearfil S(3)-Bond served as positive control groups. After treatment samples were immersed in artificial saliva. The quantitative changes in the hydraulic conductance (i.e. permeability) through dentinal tubules were quantified using a hydrostatic device working at 6.9 kPa. Dentine permeability was measured immediately after EDTA treatment, 10 min and 1 week after treatment application and immersion of dentine samples in artificial saliva. SEM/EDX analyses were performed to obtain qualitative information on dentine morphology and surface deposits.
  
  
  RESULTS
  The experimental CS cements reduced dentine permeability immediately after application and also 10 min and 1 week after the immersion of the specimens in artificial saliva. D-Sense Crystal and Clearfil S(3)-Bond showed higher levels of dentine permeability after 1 week of immersion in artificial saliva.
  
  
  CONCLUSIONS
  CS cements reduced dentine permeability in vitro even after immersion in artificial saliva, which makes them new valuable candidates for treatment of dentine hypersensitivity in vivo.
authors.affiliation: Laboratory of Biomaterials and Oral Pathology, Department of Odontostomatological Sciences, University of Bologna, Bologna, Italy. mgiovanna.gandolfi@unibo.it
authors.forename: M G
authors.initials: MG
authors.lastname: Gandolfi
authors.forename: F
authors.initials: F
authors.lastname: Iacono
authors.forename: C
authors.initials: C
authors.lastname: Pirani
authors.forename: C
authors.initials: C
authors.lastname: Prati
mesh_terms: D000704:Analysis of Variance; D002118:Calcium / Q000494:pharmacology; D003738:Dental Cements / Q000737:chemistry / Q000494:pharmacology*; D057133:Dentin Desensitizing Agents / Q000494:pharmacology*; D003806:Dentin Permeability / Q000187:drug effects*; D003807:Dentin Sensitivity / Q000517:prevention & control*; D017220:Dentin-Bonding Agents / Q000494:pharmacology*; D004338:Drug Combinations; D004492:Edetic Acid / Q000494:pharmacology; D006801:Humans; D066298:In Vitro Techniques; D008855:Microscopy, Electron, Scanning; D008963:Molar; D017942:Nitric Acid / Q000494:pharmacology*; D010070:Oxalates / Q000494:pharmacology*; D019279:Resin Cements / Q000494:pharmacology*; D012464:Saliva, Artificial / Q000494:pharmacology; D017640:Silicates / Q000494:pharmacology
chemical_list: C505694:Clearfil S3 Bond; C578268:D-Sense Crystal; D003738:Dental Cements; D057133:Dentin Desensitizing Agents; D017220:Dentin-Bonding Agents; D004338:Drug Combinations; D010070:Oxalates; D019279:Resin Cements; D012464:Saliva, Artificial; D017640:Silicates; D017942:Nitric Acid; D004492:Edetic Acid; D002118:Calcium