title: Influence of protecting agents on the solubility of glass ionomers.
abstract: OBJECTIVE
  To evaluate the influence of protective agents (varnish and glaze-resin resin) on water solubility of two glass ionomer restorative cements (Chelon-Fil and Vidrion-R), with the graviometrical test (A.D.A Specification No 9).
  
  
  METHODS
  Fifteen samples of each restorative cement were obtained and divided in one control and two experimental groups: (a) control, no protection; (b) protected with varnish; (c) protected with glaze-resin. On the two experimental groups, after the initial gelification reaction, the specimens were protected and immersed in distilled water for the period of 1 and 24 hours.
  
  
  RESULTS
  The two glass ionomer restorative cements tested required surface protection to avoid the early solubility. Among the protective materials evaluated, the varnish was the most effective agent.
authors.affiliation: Department of Prosthodontics and Periodontology, Faculty of Dentistry of Piracicaba, University of Campinas, Piracicaba, Brazil.
authors.forename: R C
authors.initials: RC
authors.lastname: Rodrigues Garcia
authors.forename: M F
authors.initials: MF
authors.lastname: De Góes
authors.forename: A A
authors.initials: AA
authors.lastname: Del Bel Cury
mesh_terms: D000704:Analysis of Variance; D003736:Dental Cavity Lining; D003764:Dental Materials; D003793:Dental Restoration, Permanent / Q000379:methods*; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements / Q000737:chemistry*; D007764:Lacquer; D009930:Organic Chemicals; D019279:Resin Cements; D012995:Solubility; D013499:Surface Properties; D014867:Water / Q000737:chemistry
chemical_list: D003764:Dental Materials; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements; D009930:Organic Chemicals; D019279:Resin Cements; C100647:Vidrion-R; C100648:Vidrion-V; D014867:Water; C068076:Chelon Fil; C041330:Scotchbond