title: Impact of bleaching agents on water sorption and solubility of resin luting cements.
abstract: OBJECTIVE
  The aim of the present study was to evaluate the effect of distilled water and home and office bleaching agents on the sorption and solubility of resin luting cements.
  
  
  METHODS
  A total of 18 disc-shaped specimens were prepared from each of four resin cements: G-CEM LinkAce, Panavia F, Rely X Unicem, and seT. Specimens were cured according to the manufacturers' instructions and randomly divided into three groups of six, where they were treated with either an office or home bleaching agent or immersed in distilled water (control). Water sorption and solubility were measured by weighing the specimens before and after immersion and desiccation. Data were analyzed using Pearson correlation coefficient, two-way analysis of variance (ANOVA) and Tukey's test.
  
  
  RESULTS
  There was a significant, positive correlation between sorption and solubility. Two-way anova showed significant differences among all resin cements tested for either sorption or solubility. Water sorption and solubility of all cements were affected significantly by office bleaching, and even more by home bleaching agents.
  
  
  CONCLUSIONS
  Sorption and solubility behavior of the studied cements were highly correlated and significantly affected by applying either office or home bleaching agents; seT showed the highest sorption and solubility, whereas Rely X Unicem revealed the lowest.
authors.affiliation: School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Mahshid
authors.initials: M
authors.lastname: Torabi Ardakani
authors.affiliation: School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Berivan
authors.initials: B
authors.lastname: Atashkar
authors.affiliation: School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Rafat
authors.initials: R
authors.lastname: Bagheri
authors.affiliation: Melbourne Dental School, The University of Melbourne, Melbourne, Victoria, Australia.
authors.forename: Michael F
authors.initials: MF
authors.lastname: Burrow
mesh_terms: D057886:Bleaching Agents / Q000494:pharmacology*; D008422:Materials Testing; D011897:Random Allocation; D019279:Resin Cements / Q000737:chemistry*; D012995:Solubility; D014867:Water / Q000737:chemistry*
chemical_list: D057886:Bleaching Agents; D019279:Resin Cements; D014867:Water
keywords: home bleaching; office bleaching; resin luting cement; solubility; sorption