title: Effect of three different mouthrinses on microleakage of composite resin restorations with two adhesive systems after bleaching with 10% carbamide peroxide.
abstract: OBJECTIVE
  The aim was to evaluate the effects of Oral-B (OB), Listerine (LN) and Rembrandt Plus (RM) mouthrinses on microleakage of composite resin restorations bonded with two adhesive systems after bleaching with 10% carbamide peroxide.
  
  
  METHODS
  A total of 60 Cl V cavities were prepared on human premolars. The occlusal and gingival margins were placed 1 mm occlusal to and apical to CEJ respectively. The teeth were randomly divided into two groups based on the adhesive system used: Excite (EX) and Clearfil SE Bond (CSE) groups. After composite resin restoration of cavities, thermocycling and bleaching with 10% carbamide peroxide for 2 hours daily for 14 days, the teeth in each adhesive group were further subdivided into three subgroups and were immersed for 12 hours in the three OB, RM and LN mouthrinses. The teeth were then placed in 2% basic fuschin for 24 hours. After dissecting the teeth, microleakage was evaluated under a stereomicroscope at 16×. Data was analyzed with multifactor ANOVA and Bonferroni test at p < 0.05.
  
  
  RESULTS
  Microleakage with EX was significantly higher than that with CSE (p = 0.009). Microleakage at gingival margins was significantly higher than that at occlusal margins (p = 0.15). Microleakage with OB was higher than that with LN (p = 0.02). However, there were no significant differences in microleakage between LN and RM (p = 1) and between RM and OB (p = 0.15). In addition, with the EX adhesive system, microleakage with OB was higher than that with LN and RM (p = 0.02).
  
  
  CONCLUSIONS
  In the present study, microleakage of composite resin restorations was influenced by the type of the adhesive system, mouthrinse type and the location of the cavity margin.
  
  
  CONCLUSIONS
  Use of some mouthrinses, such as OB after bleaching can increase postrestoration microleakage of resin composite restorations bonded with etch-and-rinse adhesive systems.
authors.affiliation: Department of Operative Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran.
authors.forename: Amir Ahmad
authors.initials: AA
authors.lastname: Ajami
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Bahari
authors.forename: Siavash Savadi
authors.initials: SS
authors.lastname: Oskoee
authors.forename: Soodabeh
authors.initials: S
authors.lastname: Kimyai
authors.forename: Mehdi Abed
authors.initials: MA
authors.lastname: Kahnamoui
authors.forename: Sahand
authors.initials: S
authors.lastname: Rikhtegaran
authors.forename: Rahim
authors.initials: R
authors.lastname: Ghaffarian
mesh_terms: D000293:Adolescent; D000891:Anti-Infective Agents, Local / Q000737:chemistry; D000077463:Carbamide Peroxide; D002594:Cetylpyridinium / Q000737:chemistry; D004396:Coloring Agents; D003188:Composite Resins / Q000737:chemistry*; D003737:Dental Cavity Preparation / Q000145:classification; D003743:Dental Enamel / Q000033:anatomy & histology; D003763:Dental Leakage / Q000145:classification*; D003764:Dental Materials / Q000737:chemistry*; D003793:Dental Restoration, Permanent; D004338:Drug Combinations; D006801:Humans; D006861:Hydrogen Peroxide / Q000737:chemistry; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D009067:Mouthwashes / Q000737:chemistry*; D010545:Peroxides / Q000737:chemistry*; D019279:Resin Cements / Q000737:chemistry*; D012394:Rosaniline Dyes; D012459:Salicylates / Q000737:chemistry; D013696:Temperature; D013729:Terpenes / Q000737:chemistry; D013997:Time Factors; D014073:Tooth Bleaching / Q000379:methods*; D058205:Tooth Bleaching Agents / Q000737:chemistry*; D019237:Tooth Cervix / Q000033:anatomy & histology; D014508:Urea / Q000031:analogs & derivatives* / Q000737:chemistry; D055815:Young Adult
chemical_list: D000891:Anti-Infective Agents, Local; C438313:Clearfil SE Bond; D004396:Coloring Agents; D003188:Composite Resins; D003764:Dental Materials; D004338:Drug Combinations; C420130:Excite cement; D008689:Methacrylates; D009067:Mouthwashes; D010545:Peroxides; C098977:Rembrandt Mouthwash; D019279:Resin Cements; D012394:Rosaniline Dyes; D012459:Salicylates; D013729:Terpenes; D058205:Tooth Bleaching Agents; D000077463:Carbamide Peroxide; C057473:Listerine; C025485:basic fuchsin; D014508:Urea; D006861:Hydrogen Peroxide; D002594:Cetylpyridinium