title: The effect of a tin-containing fluoride mouth rinse on the bond between resin composite and erosively demineralised dentin.
abstract: OBJECTIVE
  To evaluate the effect of a tin-containing fluoride (Sn/F) mouth rinse on microtensile bond strength (μTBS) between resin composite and erosively demineralised dentin.
  
  
  METHODS
  Dentin of 120 human molars was erosively demineralised using a 10-day cyclic de- and remineralisation model. For 40 molars, the model comprised erosive demineralisation only; for another 40, the model included treatment with a NaF solution; and for yet another 40, the model included treatment with a Sn/F mouth rinse. In half of these molars (n = 20), the demineralised organic matrix was continuously removed by collagenase. Silicon carbide paper-ground, non-erosively demineralised molars served as control (n = 20). Subsequently, μTBS of Clearfil SE/Filtek Z250 to the dentin was measured, and failure mode was determined. Additionally, surfaces were evaluated using SEM and EDX.
  
  
  RESULTS
  Compared to the non-erosively demineralised control, erosive demineralisation resulted in significantly lower μTBS regardless of the removal of demineralised organic matrix. Treatment with NaF increased μTBS, but the level of μTBS obtained by the non-erosively demineralised control was only reached when the demineralised organic matrix had been removed. The Sn/F mouth rinse together with removal of demineralised organic matrix led to significantly higher µTBS than did the non-erosively demineralised control. The Sn/F mouth rinse yielded higher μTBS than did the NaF solution.
  
  
  CONCLUSIONS
  Treatment of erosively demineralised dentin with a NaF solution or a Sn/F mouth rinse increased the bond strength of resin composite.
  
  
  CONCLUSIONS
  Bond strength of resin composite to eroded dentin was not negatively influenced by treatment with a tin-containing fluoride mouth rinse.
authors.affiliation: Department of Preventive, Restorative and Pediatric Dentistry, School of Dental Medicine, University of Bern, Freiburgstrasse 7, 3010, Bern, Switzerland. simon.flury@zmk.unibe.ch
authors.forename: Simon
authors.initials: S
authors.lastname: Flury
authors.forename: Tamara
authors.initials: T
authors.lastname: Koch
authors.forename: Anne
authors.initials: A
authors.lastname: Peutzfeldt
authors.forename: Adrian
authors.initials: A
authors.lastname: Lussi
authors.forename: Carolina
authors.initials: C
authors.lastname: Ganss
mesh_terms: D000268:Adhesiveness; D002327:Cariostatic Agents / Q000737:chemistry*; D017364:Collagenases / Q000494:pharmacology; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003764:Dental Materials / Q000737:chemistry*; D003799:Dental Stress Analysis / Q000295:instrumentation; D003804:Dentin / Q000187:drug effects / Q000648:ultrastructure*; D006801:Humans; D055115:Light-Curing of Dental Adhesives; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D009067:Mouthwashes / Q000737:chemistry*; D019279:Resin Cements / Q000737:chemistry; D012969:Sodium Fluoride / Q000737:chemistry; D013052:Spectrometry, X-Ray Emission; D013314:Stress, Mechanical; D013499:Surface Properties; D013718:Tensile Strength; D014002:Tin Fluorides / Q000737:chemistry*; D017001:Tooth Demineralization / Q000473:pathology*; D014077:Tooth Erosion / Q000473:pathology*; D014089:Tooth Remineralization
chemical_list: D002327:Cariostatic Agents; C438313:Clearfil SE Bond; D003188:Composite Resins; D003764:Dental Materials; C444701:Filtek Z250; D009067:Mouthwashes; D019279:Resin Cements; D014002:Tin Fluorides; D012969:Sodium Fluoride; D017364:Collagenases