title: In vitro, relative microleakage of five restorative systems.
abstract: The purpose of this study was to determine the relative microleakage of five restorative systems when bonded to dentine/cementum. For the microleakage determination Class V cavity preparations were prepared on the facial surfaces of 65 teeth (10-15 for each material) below the cemento-enamel junction and restored. The root apices were sealed, the teeth coated with nail varnish except for 1 mm surrounding the restorations and the specimens were thermocycled (x500) in 2 per cent methylene blue solution. Root sections including the restorations were dissolved in acid and the concentrations of the dye determined spectrophotometrically. The sequence of the microleakage values were: Dyract < OptiBond < AeliteBond < All-Bond 2 < ScotchBond. It is concluded that Dyract had the lowest microleakage at dentine/cementum interface, which may increase the longevity of the restorative in the clinical situation, with no, or less secondary caries.
authors.affiliation: srg@maties.sun.ac.za
authors.forename: S R
authors.initials: SR
authors.lastname: Grobler
authors.forename: R J
authors.initials: RJ
authors.lastname: Rossouw
authors.forename: T J
authors.initials: TJ
authors.lastname: Van Wyk Kotze
mesh_terms: D000134:Acid Etching, Dental; D003188:Composite Resins / Q000737:chemistry*; D003481:Cuspid; D003739:Dental Cementum / Q000187:drug effects; D003763:Dental Leakage / Q000209:etiology / Q000517:prevention & control*; D003793:Dental Restoration, Permanent / Q000145:classification / Q000379:methods; D003804:Dentin / Q000187:drug effects; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D004395:Dye Dilution Technique; D006801:Humans; D066298:In Vitro Techniques; D008422:Materials Testing / Q000379:methods / Q000706:statistics & numerical data; D008751:Methylene Blue; D018709:Statistics, Nonparametric
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents; D008751:Methylene Blue