title: Effect of two dentin bonding agents on microleakage in two different cavity designs.
abstract: Studies have shown that cavity design and dentinal bonding agents can affect composite resin microleakage. This study compared the microleakage at cementum-dentin margins of box- and Vshaped preparations restored with two different bonding agents. Twenty freshly extracted, human third molars were prepared with one box-shaped and one V-shaped preparation on the mesial or distal surface. Occlusal margins were terminated in etched enamel and gingival margins were in cementum-dentin. There was no statistically significant difference (p greater than 0.05) between Dual Cure Scotchbond and Scotchbond 2 samples restored in the box-shaped preparations, but Scotchbond 2 had statistically significantly less microleakage (p less than 0.05) than Dual Cure adhesive in V-shaped preparations. The sealing of dentinal bonding agents varied in different cavity designs.
authors.affiliation: University of Missouri, School of Dentistry, Kansas City.
authors.forename: J M
authors.initials: JM
authors.lastname: Mixson
authors.forename: J D
authors.initials: JD
authors.lastname: Eick
authors.forename: D L
authors.initials: DL
authors.lastname: Moore
authors.forename: D E
authors.initials: DE
authors.lastname: Tira
mesh_terms: D000269:Adhesives / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003737:Dental Cavity Preparation / Q000379:methods; D003738:Dental Cements / Q000737:chemistry; D003739:Dental Cementum / Q000648:ultrastructure; D003763:Dental Leakage; D003804:Dentin / Q000648:ultrastructure; D006801:Humans; D015588:Observer Variation; D019279:Resin Cements; D012835:Silver Nitrate; D013194:Staining and Labeling
chemical_list: D000269:Adhesives; D003188:Composite Resins; D003738:Dental Cements; D019279:Resin Cements; C067788:scotchbond 2; C048711:P-30 composite resin; C041330:Scotchbond; D012835:Silver Nitrate