title: An in vitro investigation into the shear bond strengths of two dentine-bonding agents used in the reattachment of incisal edge fragments.
abstract: This in vitro study investigated the shear bond strengths of sectioned bovine incisal edge fragments reattached using Gluma 2000 and Scotchbond 2. Teeth were sectioned 3 mm from the incisal edge using an Acutome with a 0.5 mm diamond wheel running at 90 degrees to the mesial or distal surface of the tooth. Twenty four incisal fragments were rebonded with each of the dentine bonding agents; a further 24 intact incisors were used as a control group. The control group required a mean fracture force of 940(+/- 144) N which was significantly greater (p < 0.01) than that required to fracture fragments rebonded using GLUMA 2000 (609 +/- 116) N and Scotchbond 2 (393 +/- 97) N. The mean force required to fracture incisal fragments rebonded with GLUMA 2000 was significantly greater (p < 0.01) than that required to fracture incisal fragments rebonded with Scotchbond 2.
authors.affiliation: Department of Pediatric Dentistry, King's College School of Medicine and Dentistry, London, England.
authors.forename: A A
authors.initials: AA
authors.lastname: Badami
authors.forename: S M
authors.initials: SM
authors.lastname: Dunne
authors.forename: B
authors.initials: B
authors.lastname: Scheer
mesh_terms: D000818:Animals; D002417:Cattle; D003188:Composite Resins / Q000627:therapeutic use; D001840:Dental Bonding; D003804:Dentin / Q000648:ultrastructure; D017220:Dentin-Bonding Agents / Q000627:therapeutic use*; D005976:Glutaral / Q000627:therapeutic use; D007180:Incisor / Q000293:injuries; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D011109:Polymethacrylic Acids / Q000627:therapeutic use; D012044:Regression Analysis; D019279:Resin Cements; D013718:Tensile Strength; D014082:Tooth Fractures / Q000628:therapy*
chemical_list: D003188:Composite Resins; D017220:Dentin-Bonding Agents; D011109:Polymethacrylic Acids; D019279:Resin Cements; C067788:scotchbond 2; C044372:Gluma; D005976:Glutaral