title: Fluoride release/recharging ability and bond strength of glass ionomer cements to sound and caries-affected dentin.
abstract: OBJECTIVE
  The aim of this in vitro study was to evaluate the microtensile bond strength (μTBS) of different glass ionomer cements (GICs) on sound/caries-affected dentin and to assess the fluoride release/recharging ability.
  
  
  METHODS
  After creating artificial caries lesions, teeth with sound and caries-affected dentin were assigned to be restored with one of the GICs: Ketac N100; GC Equia; GCP Glass Fill, and tested using a microtensile test. Ten of each material were prepared, and fluoride ion-release was measured at 10 different intervals. After 1.23% acidulated phosphate fluoride-gel immersion, fluoride re-release was then measured at the same intervals.
  
  
  RESULTS
  In sound dentin, GC Equia exhibited significantly higher μTBS value (P < 0.05). The mean μTBS of Ketac N100 to caries-affected dentin was significantly lower than the other materials (P < 0.05). All materials showed maximal fluoride release at 24 h, GC Equia released the most fluoride.
  
  
  CONCLUSIONS
  The bond strength of GICs is affected by tooth substrate. High-viscosity GICs show higher initial fluoride release as well as greater fluoride recharge capacity.
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Izmir Katip Celebi University, Cigli, Izmir, Turkey.
authors.forename: E
authors.initials: E
authors.lastname: Kucukyilmaz
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Izmir Katip Celebi University, Cigli, Izmir, Turkey.
authors.forename: S
authors.initials: S
authors.lastname: Savas
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Izmir Katip Celebi University, Cigli, Izmir, Turkey.
authors.forename: F
authors.initials: F
authors.lastname: Kavrik
authors.affiliation: Department of Restorative Dentistry, Faculty of Dentistry, Izmir Katip Celebi University, Cigli, Izmir, Turkey.
authors.forename: B
authors.initials: B
authors.lastname: Yasa
authors.affiliation: Department of Pediatric Dentistry, Faculty of Dentistry, Selcuk University, Konya, Turkey.
authors.forename: M S
authors.initials: MS
authors.lastname: Botsali
mesh_terms: D001840:Dental Bonding; D003731:Dental Caries / Q000473:pathology* / Q000517:prevention & control; D003763:Dental Leakage; D003804:Dentin / Q000737:chemistry*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D005459:Fluorides / Q000008:administration & dosage / Q000737:chemistry*; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D010710:Phosphates; D019279:Resin Cements / Q000737:chemistry; D013718:Tensile Strength
chemical_list: D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D010710:Phosphates; D019279:Resin Cements; C012980:fluorophosphate; D005459:Fluorides