title: Postoperative dental bleaching: effect of microleakage on Class V tooth colored restorative materials.
abstract: The effect of 3 percent, 11 percent, and 16 percent carbamide peroxide bleaching solutions and 35 percent hydrogen peroxide bleaching gel on microleakage of Class V composite resins, resin modified glass ionomer cements, and compomer restorative materials together with corresponding (if indicated) fourth/fifth generation bonding agents was evaluated using previously extracted human teeth. Five groups of Class V cavity preparations were placed in enamel of the facial surfaces of 200 teeth. Groups A through D included 40 restorations each (4 different restorative materials and their accompanying bonding agent multiplied by 10 teeth) treated with 3 percent, 11 percent, and 16 percent carbamide peroxide bleach and 35 percent hydrogen peroxide bleach. Group E included 40 restorations without treatment of bleach and stood as the control. The restorative materials included were: Fuji II LC resin modified glass ionomer cement, Helioprogress composite resin/-Heliobond adhesive system, Aelitefil composite resin/Allbond 2 adhesive and Dyract compomer material/Prime & Bond adhesive system. Bleaching agents included were Rembrandt 3 percent peroxide gel, Perfecta 16 percent carbamide peroxide gel, White & Brite 11 percent carbamide peroxide solution and Superoxyl 35 percent hydrogen peroxide gel. All teeth were thermally stressed for 100 cycles and microleakage were assessed by dye penetration. The results were tabulated using Analysis of Variance (ANOVA) testing procedures. The Aelitefil composite resin material behaved the least favorably (relative to microleakage) compared to the other materials when exposed to various concentrations of dental bleaching agents.
authors.affiliation: Department of General Dentistry, University of Tennessee, College of Dentistry, Memphis 38163, USA.
authors.forename: B M
authors.initials: BM
authors.lastname: Owens
authors.forename: C C
authors.initials: CC
authors.lastname: Rowland
authors.forename: D M
authors.initials: DM
authors.lastname: Brown
authors.forename: J S
authors.initials: JS
authors.lastname: Covington
mesh_terms: D000704:Analysis of Variance; D017438:Bisphenol A-Glycidyl Methacrylate / Q000009:adverse effects; D020770:Compomers / Q000009:adverse effects*; D003188:Composite Resins / Q000009:adverse effects*; D003763:Dental Leakage / Q000209:etiology*; D003793:Dental Restoration, Permanent / Q000009:adverse effects / Q000379:methods; D017220:Dentin-Bonding Agents; D005899:Glass Ionomer Cements / Q000009:adverse effects*; D006801:Humans; D008689:Methacrylates / Q000009:adverse effects; D017797:Prosthesis Coloring; D012117:Resins, Synthetic / Q000009:adverse effects; D012821:Silanes / Q000009:adverse effects; D017640:Silicates / Q000009:adverse effects; D012822:Silicon Dioxide / Q000009:adverse effects; D014073:Tooth Bleaching / Q000009:adverse effects*
chemical_list: C098721:Aelitefil; D020770:Compomers; D003188:Composite Resins; D017220:Dentin-Bonding Agents; C088486:Dyract; C079765:Fuji II LC cement; D005899:Glass Ionomer Cements; D008689:Methacrylates; D012117:Resins, Synthetic; D012821:Silanes; D017640:Silicates; C072653:Helio Progress; D017438:Bisphenol A-Glycidyl Methacrylate; D012822:Silicon Dioxide