title: Root surface marginal microleakage of composites: comparison of Cavosurface finishes.
abstract: The effect on microleakage of a modification of the cavosurface finish was evaluated using extracted thermalcycled teeth. Composite resin was placed in cavity preparations on root surfaces of teeth and finished to leave either a flash of material on the margin or finished flush to the margin. The teeth were thermalcycled for 10 days at 5 and 55 degrees C. The teeth were evaluated for microleakage using the silver nitrate staining procedure. Results showed a significant decrease in the amount of microleakage on the margins finished leaving a flash of composite resin. Clinical trials placing these restorations on root surfaces will be necessary to evaluate the impact on the periodontal health.
authors.affiliation: University of Maryland, Dental School, Baltimore 21201.
authors.forename: L J
authors.initials: LJ
authors.lastname: Litkowski
authors.forename: M
authors.initials: M
authors.lastname: Swierczewski
mesh_terms: D003188:Composite Resins; D001840:Dental Bonding; D003736:Dental Cavity Lining; D003737:Dental Cavity Preparation; D003738:Dental Cements; D003763:Dental Leakage / Q000209:etiology*; D005976:Glutaral; D006801:Humans; D009566:Nitrates; D017942:Nitric Acid; D010070:Oxalates; D011109:Polymethacrylic Acids; D019279:Resin Cements; D014092:Tooth Root / Q000473:pathology
chemical_list: D003188:Composite Resins; D003738:Dental Cements; D009566:Nitrates; D010070:Oxalates; D011109:Polymethacrylic Acids; D019279:Resin Cements; C061140:Tenure Dentin Conditioner; D017942:Nitric Acid; C041330:Scotchbond; C044372:Gluma; D005976:Glutaral